Workpapers. Transmission & Distribution Grid Operations SCE-03 Volume General Rate Case APPLICATION. An EDISON INTERNATIONAL Company

Transcription

1 An EDISON INTERNATIONAL Company (U 338-E) 215 General Rate Case APPLICATION Workpapers Transmission & Distribution Grid Operations SCE-3 Volume 7 N ovem ber 213

2 1 Workpaper - Southern California Edison / 215 GRC - APPLICATION I. GRID OPERATIONS A. Introduction SCE s transmission, sub-transmission, and distribution grid requires constant oversight and control to provide safe, reliable, and continuous electrical service to its customers. Grid Operations, in partnership with federal and state regulatory agencies, is responsible for monitoring and operating SCE s transmission and distribution system, which ranges from 12 volts to 5, volts and covers more than 5, square miles of territory. Operating the electrical system requires a staff of highly trained employees capable of coordinating planned outages and responding to emergency situations, at times in extremely stressful conditions. Grid Operations personnel must monitor transmission equipment, sub-transmission equipment, and distribution circuits and coordinate the actions of field personnel performing switching during planned outages for construction or maintenance, or during unplanned outages for service restoration and isolation of problems. System operators work closely with first responders in the field (i.e., troublemen and substation operators) to restore service. These activities all require the support from staff responsible for regulatory reporting, maintenance of databases critical to safe and effective operation of the grid, and management of the organization as a whole. In addition, Grid Operations is responsible for inspecting, maintaining, and repairing over 7, street and outdoor lights. 1. Forecast O&M Expenses and Capital Expenditures Table I-1 and Table I-2 below provide SCE s Grid Operations O&M expense and capital expenditure forecasts, which are described and supported in this chapter. 1 P. Grigaux

3 2 Workpaper - Southern California Edison / 215 GRC - APPLICATION Table I-1 Grid Operations Summary o f 215 O&M Forecast (Total Company Constant 212 $) Account Activity Grid Control Center Operations $8, Transmission Substation Operations $18, Substation and Transmission Storm Expenses $1, Distribution Substation Operations $26, Troubleman Activities $32, Streetlight Expenses $8, Service Guarantees $ Grid Operations Support $2, Distribution Storm Expenses $12,431 Total O&M Expenses $112,291 Table I-2 Grid Operations Sum m ary o f Capital Expenditures Forecast (Total Company Nominal $) Activity Total Substation Storm $39 $316 $325 $33 $338 $1,619 Transmission Storm $4,462 $4,562 $4,683 $4,76 $4,876 $23,342 Distribution Storm $41,181 $42,26 $43,12 $44,66 $45,256 $215,81 Streetlights $62,584 $5,947 $45,452 $46,468 $47,723 $253,174 Operational Facilities Maintenance $4,6 $5,6 $5,749 $5,843 $5,985 $27,777 Total Expenditures $113,136 $13,631 $99,31 $11,466 $14,179 $521,721 A See workpapers pp P. Grigaux

4 3 Workpaper - Southern California Edison / 215 GRC - APPLICATION 1 2. Comparison of 212 GRC Authorized and Recorded Costs a) O&M Expenses Figure I-1 Grid Operations O&M Expenses 212 Authorized vs. Recorded (Total Company Constant 212 $) $116. $8. n ($.5) ($16.6) ($1.2) ($2.) ($.4) $ GCC Substation Storm Troublemen Streetlights Misc. Ops 212 Recorded Troublemen GCC Streetlights Substation Ops M Misc. Storm IHDiff from Auth In the 212 GRC, the Commission authorized $116 million for the Grid Control Center (GCC) and substation operations, troublemen activities, storm related maintenance, and streetlight inspection and maintenance for the 212 test year, and SCE recorded $14 million, as shown in Figure I-1 above. Most of the $12 million difference was due to recorded storm-related O&M expenses (which fluctuate and are hard to predict) being significantly lower than authorized, offset by higher than authorized spending in substation operations, as Grid Operations began to increase its system operator and substation operator workforce to handle an increased workload. 3 P. Grigaux

5 4 Workpaper - Southern California Edison / 215 GRC - APPLICATION b) Capital Expenditures Figure I-2 Grid Operations Capital Expenditures 212 Authorized vs. Recorded (Total Company Nominal $) In the 212 GRC, the Commission authorized $63 million for storm related maintenance, streetlight maintenance, and for operational facility maintenance for the 212 test year, and SCE recorded $51 million as shown in Figure I-2 above. Most of the $12 million difference was due to recorded storm-related capital expenditures being lower than authorized. SCE spent slightly less than authorized in streetlight maintenance. SCE also had an unanticipated increase in work to maintain substation buildings, which required $1.4 million higher than authorized expenditures. 4 P. Grigaux

6 5 Workpaper - Southern California Edison / 215 GRC - APPLICATION II. WORK ACTIVITIES A. Operating the Grid Control Center (GCC) (FERC Account ) The Grid Control Center (GCC) is responsible for the overall monitoring and control of SCE s transmission system. The GCC acts as the primary point of contact for the California Independent System Operator (CAISO) and has the authority and obligation to make decisions regarding SCE s transmission grid operations during normal and emergent conditions. These activities are critical for maintaining system reliability and meeting regulatory compliance requirements. The GCC staff currently consists of 34 employees, including power system operators, operating engineers, and managers. GCC activities can be categorized into three main responsibilities: monitoring and operating SCE s bulk power system, coordinating planned outages, and developing and maintaining operating procedures. 1. Monitoring and Operating SCE s Bulk Power System GCC personnel monitor the bulk power system around the clock from a single control room using SCE s Energy Management System (EMS) and a dynamic dispatch map board that graphically depicts the status of SCE s and adjacent utility s bulk power systems. GCC personnel use these tools to monitor operating parameters such as voltage, frequency, power flow, and equipment status. When system conditions change, the power system operators and engineers access the information in real time, determine if corrective action is necessary, and instruct SCE s 14 switching centers to execute the necessary actions. As a regulatory requirement and prudent business practice, Grid Operations also maintains a separate Alternate Grid Control Center (AGCC) as a backup to its primary control room.1 In the event the GCC becomes inoperable, the AGCC will allow SCE to meet regulatory requirements to operate and monitor its bulk power system with minimal interruption. 2. Coordinating Planned Outages The GCC manages the outage coordination activity for SCE with the CAISO and external parties, such as neighboring utilities. For example, outages are planned to allow crews to install, remove, or repair equipment on the bulk power system. The GCC also coordinates outage parameters, i.e., location, schedule and duration, with the CAISO and any adjacent utilities to optimize work and reliability. Similarly, when external parties, such as neighboring utilities, schedule outages or need to 1 The AGCC is required under NERC Standard EOP-8-1 (Loss of Control Center Functionality). 5 P. Grigaux

7 Workpaper - Southern California Edison / 215 GRC - APPLICATION work on their equipment, the GCC manages the communications and coordination for SCE, to maintain system reliability and minimize risk of service impacts to customers. GCC personnel play key governance and control role during planned outages to facilitate reliability of the bulk-power grid and safety of the personnel working on it. They study and review outage requests for operational feasibility, adherence to established operational procedures, and impact on power flow. Detailed technical analyses are conducted to identify and address any operational concerns or constraints, and to establish necessary outage parameters. As maintenance work requests come to the GCC, power flow, dynamic stability, and post-transient voltage stability analyses are performed to evaluate and plan for the safe and reliable operation of the bulk power system during the outage. These studies help identify any load or generation limits that may need to be imposed before an outage can proceed. When an outage has ended, when power flow is being restored, or when new equipment is placed in service on the bulk power system, the GCC determines the proper procedure to safely energize the equipment and place it back in service. Table II-3 below demonstrates that the number of planned outage requests processed by the GCC during the periods has steadily increased. This increase is expected to continue in the future, as major transmission and substation projects are completed, and new lines, transformers, and other equipment are put into service. Table II-3 Number o f Planned Outages by Year Processed by the GCC Planned Outages 13,675 14,41 15,494 16,571 16, Developing and Maintaining Procedures The GCC also develops, implements, and maintains procedures for power system operators and switching center operators to use when performing real-time operational activities, which helps maintain reliability during both normal and emergency operating conditions. Procedures developed by the GCC that involve lines and equipment under the CAISO s purview is submitted to the CAISO for review. This process enables proper coordination and continuity with any applicable CAISO operating procedures. GCC personnel are responsible for compliance with several NERC reliability standards - Transmission Operations and Monitoring, Emergency Preparedness and Operations, Interconnection 6 P. Grigaux

8 7 Workpaper - Southern California Edison / 215 GRC - APPLICATION Reliability Operation and Coordination, and Voltage and Reactive (VAR). When these NERC standards change, GCC personnel must develop new procedures and participate in any additional training required to meet the new standards. Figure II-3 Grid Control Center Operation Expenses FERC Account Recorded and Adjusted /Forecast (Total Company Constant 212 $) $ 1, $8, $6, $4, $2, $- Labor Non-Labor Total Expenses GCC Employees Cost per Employee Ratio of Labor to Total Recorded F orecast $3,883 $4,43 $4,867 $4,93 $4,933 $6,48 $6,27 $6,526 $2,22 $1,886 $1,48 $1,585 $1,745 $2,14 $2,196 $2,38 $5,95 $6,289 $6,275 $6,515 $6,678 $8,187 $8,43 $8, $144 $152 $157 $159 $159 $159 $159 $159 66% 7% 78% 76% 74% 74% 74% 74% Basis of Forecast: 212 Recorded Cost per GCC employee times number of GCC personnel Basis of Labor/Non-Labor Split: 212 Labor/Non-Labor Ratio a) Cost Forecast Figure II-3 above shows the recorded and forecast costs for this activity. The labor costs in this activity are driven by the number of GCC personnel. Costs increased from 28 to 21 as more operators and operating engineers were added to meet work demand. Since 21, costs have remained relatively stable. As shown in Table II-3, the number of planned outages to facilitate SCE's bulk power system expansion has increased by 24% from 28 to 212. This system expansion has also contributed to the increasing number of electrical assets that need to be monitored, controlled and operated. In 28, the Energy Management System (EMS) contained a total of 25, data points, 7 P. Grigaux

9 Workpaper - Southern California Edison / 215 GRC - APPLICATION a measure of electrical assets and nodes across the grid that requires operational oversight. EMS data points have increased to almost 35, by 212, a more than 2% increase. With the anticipated ongoing capital investments over the next several years, the increase in assets and data points is expected to continue at a similar pace. In the 212 GRC, SCE requested funding at a level to support a staff of 39 GCC employees. The 212 GRC decision subsequently approved expenses at a level to support 35 employees. By early 213, SCE had filled five of the six additional authorized positions. In order to meet the increasing workload and regulatory requirements, and to provide appropriate monitoring and control of SCE s bulk power system, SCE forecasts labor expenses to increase, as additional GCC personnel are required. SCE also needs to increase staffing now to prepare for impending retirements of highly qualified and experienced personnel. The GCC must maintain a pipeline of trained personnel, as it takes several years for a power system operator to be adequately trained to perform this function. In total, a GCC staff of 41 is required by 215 for the GCC and AGCC to be adequately staffed to handle the workload going forward. The increased staff includes power system operators and engineers for the AGCC, an additional manager to allow for round-the-clock management coverage, and additional power system operators, who must be trained and ready to take over for personnel that will soon be retiring. To develop the labor expense forecast for this activity, SCE utilized the 212 recorded labor cost of $159, per GCC employee.2 SCE multiplied this cost per employee by the number of GCC employees SCE expects to have for Non-labor expenses include employee-related expenses and allocated costs from business operations. The ratio of labor costs to total costs has reduced slightly from 21 to 212. The 212 labor to total cost ratio best represents future costs, so that ratio was utilized to forecast non-labor expenses. The O&M forecast for GCC Operations is summarized in Figure II-3. B. Operating the Substation and Distribution System (FERC Accounts and ) While the GCC is responsible for the monitoring and control of the bulk power system, the dayto-day operation of the sub-transmission and distribution system is carried out by 14 switching centers geographically dispersed around the system. The operation of these switching centers relies primarily on two types of employees: system operators and substation operators. 2 The $159, cost per operator is the average recorded labor cost for GCC employees in

10 9 Workpaper - Southern California Edison / 215 GRC - APPLICATION System operators are stationed within the switching centers and are responsible for remotely operating the portion of the transmission, sub-transmission and distribution system within their geographic control area. This requires that each switching center comply with published system operating bulletins that set operating parameters for electrical control equipment on the system. In addition, there are 844 manned and unmanned substations on the system. In addition to monitoring and operating the portion of the grid they are responsible for, system operators also write switching programs that are used to electrically isolate, energize, or test equipment in the field in support of maintenance or capital work. The increasing number of switching procedures, as shown in Table II-4 below, is based on the amount of work performed by transmission, substation, and distribution construction and maintenance organizations. SCE anticipates that this growth in switching procedures will continue in the coming years because of the increases in capital and O&M work discussed throughout T& D s testimony.3 Table II-4 Number o f Switching Procedures Performed (Includes P lanned and Unplanned Work) 28 to Switching Procedures 46,858 53,793 56,97 6,57 6, Substation operators perform three primary functions: visually inspecting substation equipment, performing routine switching, and performing emergency switching. Substation operators travel to various substations within their assigned geographical areas to perform their work. Monthly visual inspections of transformers, regulators, circuit breakers, and other substation equipment are performed by substation operators. In addition to these visual inspections, the Substation Construction and Maintenance (SC&M) group, as discussed in Mr. Kedis testimony in Exhibit SCE-3, Volume 8, performs detailed inspections and performs maintenance on substation equipment on a scheduled basis. The information gathered from both of these inspections is used for planning substation maintenance work. Substation operators also inspect the physical facilities and perimeter of substations for damages to structures (including vandalism), and encroachments by vegetation or wildlife. These inspections are required by regulatory agencies, including CAISO, CPUC and WECC, 3 For examples, please see Mr. Lee s Infrastructure Replacement testimony in Exhibit SCE-3, Vol. 4, and Mr. Trainor s Pole Loading Program testimony, in Exhibit SCE-3, Vol. 6, Part 2. 9

11 Workpaper - Southern California Edison / 215 GRC - APPLICATION and are critical to the safety of both SCE crews and the public. In 213, the CPUC adopted General Order 174, which requires monthly inspections of all substations. In addition to mandated inspections, substation operators investigate reports of unusual events at SCE s substations, such as alarms generated by equipment within the substation or reports from the public, an animal inside a substation, intrusion by unidentified parties into the substation, or a change in equipment status due to an earthquake or storm. Substation operators also perform both routine switching to support planned work that requires an outage, and emergency switching to respond to any unplanned events that affect the grid. Routine switching involves de-energizing and isolating equipment that requires maintenance or capital work. All switching done by substation operators is performed at the substations, as opposed to remote switching performed by system operators from switching centers. To perform this work, substation operators follow detailed switching procedures written by system operators. Substation operators perform switching procedures several times per day in order to support construction, maintenance, and routine or emergency troubleshooting activities. Emergency switching is done in response to any unplanned event that interrupts the flow of power on the grid. Substation operators are the first responders to inspect and assess damage caused by an unplanned event within a substation. Switching for emergencies differs from routine switching for maintenance in that it is reactive and performed specifically to isolate damaged equipment and safely restore the flow of electricity to customers. In the case of emergency switching, a substation operator assesses the status of the damaged equipment and reports it to a system operator. Based on this assessment, the substation operator prepares a draft emergency switching procedure and submits it to the system operator for review and approval. Once approved, a system operator directs a substation operator to perform the necessary switching. 1

12 11 Workpaper - Southern California Edison / 215 GRC - APPLICATION Table II-5 Substation Operations FERC Accounts and R ecorded and A djusted /Forecast (Total Company Constant 212 $) Recorded Forecast Labor $24,83 $26,35 $31,213 $3,28 $3,69 $31,214 $31,214 $31,214 Non-Labor $9,19 $8,788 $12,526 $11,451 $13,396 $13,659 $13,659 $13,659 Total $33,993 $35,93 $43,739 $41,479 $44,5 $44,873 $44,873 $44,873 Operators Labor Cost per Operator $143 $138 $163 $145 $141 $139 $139 $139 Ratio oflabor to Total 73% 75% 71% 72% 7% 7% 7% 7% Basis of Forecast: 212 Recorded Cost Per Operator (less 3%) times Number of Operators Basis o f Labor/Non-Labor Split: 212 Labor/Non-Labor Ratio

13 12 Workpaper - Southern California Edison / 215 GRC - APPLICATION Figure II-4 Transmission Substation Operations GRC A ccount R ecorded and A djusted /Forecast (Total Company Constant 212 $) See workpapers pp $2, $ 15, $ 1, $5, $- Recorded Forecast Labor $11,21 $11,231 $12,794 $12,448 $12,683 $12,985 $12,985 $12,985 Non-Labor $4,7 $3,895 $5,291 $4,84 $5,621 $5,682 $5,682 $5,682 Total Expenses $15,28 $15,126 $18,85 $17,288 $18,34 $18,667 $18,667 $18,667 Ratio of Labor to Total 73% 74% 71% 72% 69% 7% 7% 7% Basis of Forecast: Last Year Recorded Basis of Labor/Non-Labor Split: 212 Labor/Non-Labor Ratio 12

14 13 Workpaper - Southern California Edison / 215 GRC - APPLICATION Figure II-5 Distribution Substation Operations GRC Account R ecorded and A djusted /Forecast (Total Company Constant 212 $) $ 3, $ 25, $ 2, $ 15, $ 1, $5, $- Recorded Forecast Labor $13,782 $15,74 $18,419 $17,58 $17,926 $18,229 $18,229 $18,229 Non-Labor $5,183 $4,893 $7,235 $6,611 $7,775 $7,977 $7,977 $7,977 Total Expenses $18,965 $19,967 $25,654 $24,191 $25,71 $26,26 $26,26 $26,26 Ratio of Labor to Total 73% 75% 72% 73% 7% 7% 7% 7% Basis of Forecast: Last Year Recorded Basis of Labor/Non-Labor Split: 212 Labor/Non-Labor Ratio Cost Forecasts Substation operation expenses are recorded to either a transmission or a distribution account, depending on the work being performed. SCE developed a single forecast and then allocated the costs between transmission and distribution accounts. As shown in Figure II-5 above, costs increased beginning in 29 and increased again in 21 as SCE hired additional system and substation operators to handle increased workload. Costs remained relatively constant from 21 to 212 for substation operation expenses. SCE plans to hire eight additional system operators in 213 to allow for optimal coverage of switching center requirements.4 These additional system operators will result in savings of over $5, in overtime expenses, which will reduce the average labor cost per operator 4 Adequate staffing requires one operator per A-bank during the day and one operator for every 2-5 A-banks in the evening and weekends. SCE s current staffing levels require operators to work overtime at unsustainable levels to provide the necessary coverage. 13

15 Workpaper - Southern California Edison / 215 GRC - APPLICATION from recorded 212 costs of $141, to $139,.5 To develop the forecast, SCE multiplied $139, by the total number of operators required in SCE allocated its forecast between transmission and distribution based on recorded 212 costs. The forecasts for Transmission and Distribution Substation Operations O&M expenses are summarized in Figure II-4 and Figure II-5 above. C. Storm Response SCE s electrical system can be impacted by both weather conditions (including rain, wind, lightning, and heat) and by natural disasters (such as earthquakes and forest fires). Storms are declared based on pre-established criteria that take into account the magnitude of the storm and the response required to provide timely restoration of service to customers. Once a storm is declared, Grid Operations initiates notification and assembly of appropriate personnel for situation assessment, service restoration, and communication within SCE and with external agencies. SCE incurs both O&M expenses and capital expenditures to restore service caused by storm conditions. 1. Storm Response Expenses (FERC Accounts and ) Storm O&M expenses include costs incurred to manage the storm command center, identification of the electrical facilities or structures that have been affected, assessments for required repairs or replacements, performing switching to isolate problem areas, and repairing of damaged equipment. - See workpaper entitled Operator Labor Savings Forecast for additional details. See workpapers pp

16 15 Workpaper - Southern California Edison / 215 GRC - APPLICATION See workpapers pp Figure II-6 Substation and Transmission Storm Response Expenses FERC Account R ecorded and A djusted /Forecast (Total Company Constant 212 $) $3, $2,5 $2, $1,5 $1, $5 $- Recorded Forecast Labor $36 $511 $678 $278 $354 $426 $426 $426 Non-Labor $41 $773 $695 $1,435 $2,24 $1,11 $1,11 $1,11 Total Expenses $716 $1,284 $1,373 $1,713 $2,594 $1,536 $1,536 $1,536 Ratio of Labor to Total 43% 4% 49% 16% 14% 28% 28% 28% Basis of Forecast: Five-Year (28-212) Average Costs Basis of Laboi/Non-LaborSplit: Five-Year (28-212) Average Recorded Labor/Non-Labor Ratio 15

17 Workpaper - Southern California Edison / 215 GRC - APPLICATION Figure II-7 See workpapers Distribution Storm Response Expenses pp FERC Account R ecorded and A djusted /Forecast (1% CPUC-Jurisdictional Constant 212 $) $25, $2, $15, $1, $5, Labor Non-Labor Total Expenses Ratio of Labor to Total $- 1 1 If 1n 111 Recorded Forecast $2,74 $3,394 $3,247 $8,444 $3,58 $4,259 $4,259 $4,259 $19,159 $6,433 $3,772 $9,489 $2,9 $8,172 $8,172 $8,172 $21,863 $9,827 $7,19 $17,933 $5,517 $12,431 $12,431 $12,431 12% 35% 46% 47% 64% 34% 34% 34% Basis of Forecast: Five-Year (28-212) Average Costs Basis of Laboi/Non-LaborSplit: Five-Year (28-212) Average Recorded Labor/Non-Labor Ratio a) Cost Forecasts Storm-related expenses are recorded in FERC Account for substation and transmission facilities, and for distribution facilities, as shown in Figure II-6 and Figure II-7. Storm expenses that occur during emergency events declared states of emergency by the Governor of California and exceed Commission-authorized amounts for storm-related expenses are sometimes recovered through a Catastrophic Events Memorandum Account (CEMA) filing. Any CEMA-related expenses that have been or that will be recovered through CEMA filings have been removed from SCE s recorded expenses in this account. In addition, the 211 Windstorm expenses have also been removed from recorded expenses. Since storm events are driven by weather and other environmental factors that are outside of SCE s control, a five-year average of recorded costs was used as the basis for the forecast in these accounts. This methodology has been accepted by the Commission in SCE s last three rate cases. In SCE S 212 GRC, the Commission stated the primary driver of the storm-related O&M costs is the 16

18 17 Workpaper - Southern California Edison / 215 GRC - APPLICATION weather. Given the unpredictability of the weather, recently illustrated by the December 21 windstorm in SCE s territory, use of a five-year average seems more reasonable to develop a test year forecast for these subaccounts Storm Response Capital Expenditures Storm Response capital expenditures include all costs associated with replacing electrical facilities, structures, or equipment damaged during storm events. $7, $6, $5, $4, - $3, $2, $1, Figure II-8 Transmission Storm Capital Expenditures WBS Element CET-PD-ST-TS Recorded /Forecast (Total Company Constant 212 and Nominal $) See workpaper page Nominal $ $3,585 $3,677 $2,138 $6,213 $5,721 $4,462 $4,562 $4,683 $4,76 $4, Constant $ $3,769 $3,956 $2,229 $6,277 $5,721 $4,39 $4,39 $4,39 $4,39 $4,39 Nominal $ -212 Constant $ 6 D , pp

19 18 Workpaper - Southern California Edison / 215 GRC - APPLICATION Figure II-9 See workpaper Substation Storm Capital Expenditures WBS Element CET-PD-ST-SS page 99 Recorded /Forecast (1% CPUC-Jurisdictional Constant 212 and Nominal $) $ Nominal $ $57 $39 $546 $24 $318 $39 $316 $325 $33 $ Constant $ $6 $333 $569 $243 $318 $34 $34 $34 $34 $34 Nominal $ -212 Constant $ 18

20 19 Workpaper - Southern California Edison / 215 GRC - APPLICATION Figure II-1 See workpaper Distribution Storm Capital Expenditures page 11 WBS Element CET-PD-ST-DS Recorded /Forecast (1% CPUC-Jurisdictional Constant 212 and Nominal $) $6, $5, $4, $3, - V $2, $1, $ Nominal $ $32,558 $36,879 $43,413 $47,61 $27,61 $41,181 $42,26 $43,12 $44,66 $45, Constant $ $37,311 $41,325 $46,674 $49,143 $27,61 $4,33 $4,33 $4,33 $4,33 $4,33 Nominal $ -212 Constant $ a) Cost Forecasts Storm-related capital expenditures are recorded in three categories - Transmission Storm Expenditures, Substation Storm Expenditures, and Distribution Storm Expenditures, depending on the facilities and equipment that are damaged. As was the case with storm expenses, CEMA-related capital expenditures that have been or that will be recovered through CEMA filings have been removed from SCE s recorded expenditures in this account. The 211 Windstorm capital expenditures have also been removed from recorded capital expenditures for purposes o f calculating the forecast five-year average. The storm-related capital expenditure forecasts were developed using the same methodology as storm expenses. As discussed above, since storm events are driven by weather and other environmental factors that are outside of SCE s control, SCE used a five-year average of recorded costs as the basis for the forecasts in these accounts. Storm-related expenditures are summarized in Figure II-8, Figure II-9 and Figure II-1 above. 19

21 Workpaper - Southern California Edison / 215 GRC - APPLICATION D. Responding to Unplanned Events and Customer Calls (FERC Account ) Troublemen are the first responders to electrical-service problems resulting from a wide range of events, including storms, and provide round-the-clock coverage on the distribution system. These employees come from the journeyman lineman ranks and are highly trained in skills such as troubleshooting the electric grid, switching, and emergency scene control. Troublemen are required to deal efficiently and safely with emergency situations, and to interact with customers experiencing electrical problems. In 212, SCE employees responded to over 2, incidents reported to the Distribution Operations Centers (DOC) by a variety of sources, including customers, system operators, 911 calls, and emergency responders. These incidents included reports of outages, partial lights, damaged equipment, such as downed wires, transformer failures, and third party exposure, and voltage fluctuation problems. This volume of incidents represents a 17 percent increase from that experienced in 29 when SCE filed its 212 rate case. Troublemen are notified through a DOC or a Switching Center to locate a problem that has been identified and to take expedited action to mitigate the potential impacts of the problem. To do so, dispatched troublemen must first locate the sourc e of the problem. This may be as simple as responding to a specific location identified by a customer or emergency personnel or it may require patrolling a circuit, including isolating and testing sections of a circuit, to determine why a line has relayed or lost power. Once the troubleman has located the source of the problem, corrective action is taken. If possible, the troubleman will act alone and, if safe, correct the problem without interrupting service to customers. More complex cases may require the troubleman to electrically isolate a section of circuit to remedy the problem and restore service to customers by returning the distribution system to safe operating conditions. In order to isolate a problem, a troubleman will coordinate with system operators to open switches to isolate a section of the grid or close switches to pick up load on an alternative circuit. Switches may be operated manually by the troubleman in the field or, in some cases, remotely by a system operator. In performing a switching procedure to isolate a section of circuit, the troubleman s goal is to protect himself, other employees performing maintenance on the grid, and the public. In doing so, the troubleman is able to safely restore service to customers. In some instances, the troubleman may need additional assistance. In that case, he would request assistance from either an additional troubleman or a field crew, depending on the extent of the problem. 2

22 21 Workpaper - Southern California Edison / 215 GRC - APPLICATION 1 2 Repairs made to correct trouble include splicing damaged cable, fixing conductors hanging low enough to endanger the public, trimming trees, and removing mylar balloons or other debris from lines. Figure II-11 Troubleman Activity Expenses FERC Account R ecorded and A djusted /Forecast (1% CPUC-Jurisdictional Constant 212 $) Labor N on-labor Total Expenses $4, $35, $3, $25, $2, $15, $1, $5, Troublemen Labor per Troubleman Ratio of Labor to Total $- Recorded Forecast $18,155 $21,263 $22,725 $21,611 $22,879 $22,97 $23,847 $23,847 $9,856 $12,366 $6,75 $7,859 $8,457 $8,471 $8,818 $8,818 $28,11 $33,629 $29,475 $29,47 $31,336 $31,378 $32,665 $32, $13 $121 $128 $122 $124 $117 $117 $117 65% 63% 77% 73% 73% 73% 73% 73% Basis of Forecast: 212 Recorded Cost Per Troubleman (less 5%) times Number of Troublemen Basis of LaboiVNon-Labor Split: 212 Labor/Non-Labor Ratio Cost Forecast For public and employee safety and to provide reliable service to customers, SCE s system must be divided into manageable areas to allow SCE to respond in a timely manner to outages or other system issues. It is especially important that SCE has the resources available to respond quickly to emergencies such as downed wires or poles so that these issues do not cause public safety issues. SCE has divided its service territory into 155 areas. These areas have been created based on several factors, including the number of customers, SCE assets, and geographical size. The areas, and the shift standards for each area, have been designed to optimize SCE s ability to respond in a timely manner to system issues. SCE s current standard is to have one troubleman assigned to each area during peak times (daily Monday-Friday) and one troubleman assigned to up to four areas during non- 21

23 Workpaper - Southern California Edison / 215 GRC - APPLICATION peak times (evenings and weekends). To achieve this goal and ensure proper coverage, continued public safety, and appropriate response time to an increasing number of electrical events, SCE has determined that it needs to hire 18 additional troublemen. By increasing the number of troublemen by 18, SCE will be able to achieve some cost savings per troubleman. To develop the labor cost forecast for troubleman activities, SCE utilized the 212 recorded labor cost per troubleman, less a 5 percent reduction to labor costs, times the number of troublemen needed on staff to adequately cover all 155 areas. By using the current optimal shift standards as described above, where each of the 155 areas has one troubleman assigned during peak and one troubleman assigned to up to four areas during non-peak times, SCE is able to save 5 percent per troubleman in labor costs, due to a reduction in the average overtime rate.7 Non-labor expenses were forecast utilizing the ratio of 212 recorded non-labor to total costs. The forecast for troubleman activities is shown in Figure II-11. E. Managing the Street and Outdoor Lighting System (FERC Account ) 1. Streetlight O&M Expenses (FERC Account ) Street and Outdoor Lighting expenses are broken into two categories of costs, Streetlight Inspection and Maintenance and Streetlight Operations and Billing. The total expenses for these two activities are shown in Figure II-12 below. 7 See workpaper titled Troubleman Labor Savings Forecast for additional details. See workpapers pp

24 23 Workpaper - Southern California Edison / 215 GRC - APPLICATION Figure II-12 See workpapers Streetlight Expenses pp FERC Account R ecorded and A djusted /Forecast (1% CPUC-Jurisdictional Constant 212 $) $12, $1, $8, $6, $4, $2, $- Recorded Forecast Streetlight Inspection and Maintenance Labor $3,33 $3,51 $3,278 $2,768 $3,21 $2,972 $2,995 $3,61 Non-Labor $4,232 $4,544 $3,476 $3,189 $3,159 $3,434 $3,46 $3,536 Sub-Total $7,562 $8,54 $6,754 $5,957 $6,369 $6,46 $6,455 $6,597 Streetlight Operations and Billing Labor $1,74 $1,26 $1,227 $1,24 $1,22 $1,22 $1,22 $1,22 Non-Labor $1,54 $1,274 $852 $938 $946 $946 $946 $946 Sub-Total $2,128 $2,534 $2,79 $2,142 $2,166 $2,166 $2,166 $2,166 Total Labor $4,44 $4,77 $4,55 $3,972 $4,43 $4,192 $4,215 $4,281 Non-Labor $5,286 $5,818 $4,328 $4,127 $4,15 $4,38 $4,46 $4,482 Total Expenses $9,69 $1,588 $8,833 $8,99 $8,535 $8,572 $8,621 $8,763 1 a) Streetlight Inspection and Maintenance (Portion of FERC Account ) 2 Lamps, photocells, and other streetlight components sometimes fail in service. 3 By patrolling the streetlight system and inspecting all urban streetlights at least once a year, SCE can 4 minimize the impact of these component failures.8 In fact, G.O. 165 requires that SCE patrol all urban- 5 area streetlights on an annual basis. Additionally, SCE responds to reports of streetlights out from 6 customers, employees, and through SCE s on-line reporting system within five working days of 7 notification. 8 Rural streetlights are inspected every two years. 23

25 Workpaper - Southern California Edison / 215 GRC - APPLICATION SCE uses a contractor to complete annual streetlight patrols in urban areas. This contractor patrols for streetlight trouble during the night to determine if the lights are functioning and use hand-held field tools to quickly download information from streetlights that are flickering or out. This information helps T&D s Street and Outdoor Lighting Organization (SOLO) determine the source of the problem and target maintenance accordingly. In addition, the patrol contractor uses GPS technology to help SOLO confirm the location of SCE s streetlights in its inventory database. The information gathered during these patrols is processed by SOLO support staff and used to direct streetlight repairmen to streetlights that require repairs. In total, SOLO responds to more than 1, customer-reported and patrol-discovered problems each year. These repairs are performed by streetlight repairmen, who receive work orders from a centralized location each day. The repairmen are dispatched to the field to perform needed repair work. Each streetlight repairman typically works alone and is equipped with a single-bucket truck. Repairs may be as simple as replacing a broken lamp, a broken photo cell, or fixing other failed equipment. In the event the streetlight repairman discovers a problem he cannot remedy on his own, he will request assistance from an electrical crew. Table II-6 Streetlight Inspection and Maintenance Expenses Portion o f FERC Account Recorded /Forecast (1% CPUC-Jurisdictional Constant 212 $) Recorded Forecast Labor $3,33 $3,51 $3,278 $2,768 $3,21 $2,972 $2,995 $3,61 Non-Labor $4,232 $4,544 $3,476 $3,189 $3,159 $3,434 $3,46 $3,536 Total $7,562 $8,54 $6,754 $5,957 $6,369 $6,46 $6,455 $6,597 Number of Streetlights 638,386 64, , ,79 652, , , ,63 Cost per Streetlight (whole $) $12 $13 $1 $9 $1 $1 $1 $1 Ratio of Labor to Total 44% 44% 49% 46% 5% 46% 46% 46% B asis o f Forecast: 212 Cost Per Streetlight Times Forecast Streetlights B asis o f Labor/Non-Labor Split: Five-Year (28-212) Average Recorded Labor/Non-Labor Ratio (1) Cost Forecast As shown in Table II-6, SCE s streetlight inspection and maintenance cost per streetlight has remained relatively constant, at $1 per streetlight, over the last three years. SCE 24 P. Grigaux

26 25 Workpaper - Southern California Edison / 215 GRC - APPLICATION anticipates this $1 cost per streetlight will remain the same through 215. To develop the forecast for this activity, SCE multiplied the 212 cost per streetlight times the number of streetlights SCE expects to have on its system in The 215 forecast was then levelized by averaging the forecasts. SCE utilized the five-year average ratio of labor to total costs to split the forecast between labor and non-labor expenses, as the ratio has fluctuated slightly between 44 percent and 5 percent over the last five years. b) Streetlight Operations and Billing (Portion of FERC Account ) To perform streetlight mapping and inventory updates, SOLO uses a group of analysts to research potential inaccuracies and reconcile the inventory database to information gathered during patrols and other field activities. This includes updating the inventory when new accounts are established with municipal customers and updating the inventory and maps when construction or maintenance activities change the location or structure number of a streetlight. In addition, SOLO support personnel review streetlight trouble orders to confirm that repairs have been made in compliance with all rules and regulations. When a repair is completed, SOLO support personnel validate the work performed, record any information relevant to the inventory of streetlights, and create a record of the job. Maintaining an accurate inventory is essential for reliability and customer satisfaction. Table II-7 Streetlight Operations and Billing Expenses Portion o f FERC Account Recorded /Forecast (1% CPUC-Jurisdictional Constant 212 $) Recorded Forecast Labor $1,74 $1,26 $1,227 $1,24 $1,22 $1,22 $1,22 $1,22 Non-Labor $1,54 $1,274 $852 $938 $946 $946 $946 $946 Total $2,128 $2,534 $2,79 $2,142 $2,166 $2,166 $2,166 $2,166 Ratio of Labor to Total 5% 5% 59% 56% 56% 56% 56% 56% Basis o f Forecast: Last Year Recorded Basis o f Labor/Non-Labor Split: Last Year Recorded (1) Cost Forecast Streetlight Operations and Billing expenses have remained relatively constant over the past three years. SCE expects costs to remain at 212 levels through 215, even as the 25 P. Grigaux

27 26 Workpaper - Southern California Edison / 215 GRC - APPLICATION streetlight inventory continues to grow. Therefore, recorded 212 costs were utilized as the basis for the 215 forecast as shown in Table II-7 above. 2. Capital Expenditures Streetlight capital expenditures can be grouped into three main categories: (1) steel pole replacements; (2) luminaire replacements; and (3) breakdown maintenance. The recorded and forecast streetlight capital expenditures are shown in Figure II-13. The forecast for each of the three categories is shown in Table II-8. Figure II-13 Streetlight Capital Expenditures WBS Element CET-PD-OT-SL Recorded /Forecast (1% CPUC-Jurisdictional Constant 212 and Nominal $) See workpaper page Nominal $ $8,149 $13,147 $11,337 $9,776 $15,895 $62,584 $5,947 $45,452 $46,468 $47, Constant $ $9,339 $14,732 $12,189 $1,92 $15,895 $61,25 $48,65 $42,5 $42,5 $42,5 Nominal $ -212 Constant $ 26 P. Grigaux

28 27 Workpaper - Southern California Edison / 215 GRC - APPLICATION Table II-8 Streetlight Capital Expenditure Forecasts WBS E lem ent CET-PD-OT-SL (1% CPUC-Jurisdictional Constant 212 and Nominal $) Steel Pole Replacements Units: Steel Poles 7,5 5,5 5, 5, 5, Unit Cost, Constant 212 $ $6.3 $6.3 $6.3 $6.3 $6.3 Constant $ $47,25 $34,65 $31,5 $31,5 $31,5 Nominal $ $48,279 $36,286 $33,688 $34,441 $35,372 Luminaire Replacements Units: Luminaires 4, 4, 3, 3, 3, Unit Cost, Constant 212 $ $3 $3 $3 $3 $3 Constant $ $12, $12, $9, $9, $9, Nominal $ $12,261 $12,567 $9,625 $9,84 $1,16 Breakdown Maintenance Constant 212 $ $2, $2, $2, $2, $2, Nominal $ $2,44 $2,94 $2,139 $2,187 $2,246 Grand Total Constant 212 $ 61,25 48,65 42,5 42,5 42,5 Nominal $ 62,584 5,947 45,452 46,468 47, a) Steel Pole Replacements (WBS Element CET-PD-OT-SL-SP) For several years, SCE has had a program to replace its steel streetlight pole inventory of approximately 7, poles with concrete streetlight poles due to both their age and their condition as described in detail below. SCE anticipates completing this replacement program in approximately 12 years, or by 225. Steel streetlight poles suffer from corrosion quicker in areas close to the ocean. In addition, these poles often deteriorate due to frequently being wetted by sprinklers installed for commercial and residential landscaping maintenance. Typically, these poles deteriorate in three ways: (1) the top of the pole rusts out, (2) holes develop in the base of the pole caused by rust, or (3) the foundation anchor bolts rust and eventually disintegrate. The aging of steel streetlight poles and the continuing corrosion of these assets leads to an ongoing and urgent need to replace steel streetlight poles. In this GRC, SCE estimates 27 P. Grigaux

29 Workpaper - Southern California Edison / 215 GRC - APPLICATION replacing 28, steel poles between 213 and 217. SCE s replacement program includes replacing 7,5 steel poles in 213, 5,5 in 214, and 5, annually from Based on recorded cost data, SCE estimates that the cost per steel pole replacement is $6,3.9 The forecast for steel pole replacements is shown in Table II-8 above. b) Luminaire Replacements SCE owns over 65, streetlight fixtures and over 4, area and outdoor walkway lights. From time to time, the luminaires on these structures need to be replaced. In order to maintain reliable streetlight service, SCE is requesting an amount of capital that will allow for replacement of 4, luminaires annually in 213 and 214, and 3, luminaires annually from Luminaires typically need to be replaced after about 15 years of service because internal components fail. SCE estimates that it costs $3 to replace a luminaire, based on historical data.1 The forecast for luminaire replacements is shown in Table II-8 above. c) Breakdown Replacements Streetlight repairmen repair streetlights on a day-to-day basis. At times, streetlight repairmen may encounter problems they are not able to fix on their own. In that case, a repairman will request the assistance of an electrical line crew, which typically includes linemen and other distribution maintenance personnel. These more complicated repairs may require a planned system outage, significant time on-site, additional manpower, or additional equipment. Common problems causing a streetlight repairman to request additional assistance are (1) conductor breakdowns, (2) structural damage to poles, or (3) multiple, in-line streetlight outages. When these requests are made, SOLO support personnel work to assign the repairs to the appropriate SCE resources or to contractors. Since these repairs are more complicated, they tend to be more costly than a simple fixture replacement. SCE based its forecast for breakdown replacements on its recorded 212 costs of $2 million, as shown in Table II-8. F. Grid Operations Support Expenses (FERC Account ) Grid Operations Support expenses come in two categories, Circuit Mapping and Outage Data Management. The total expenses for these two activities, which record to FERC Account , are shown in Figure II-14 below. 9 See workpaper titled Steel Pole Replacement Unit Cost for additional details. 1 See workpaper titled Luminaire Replacement Unit Cost for additional details. 28 P. Grigaux

30 29 Workpaper - Southern California Edison / 215 GRC - APPLICATION Figure II-14 See workpapers Grid Operations Support Expenses pp FERC Account Recorded /Forecast (1% CPUC-Jurisdictional Constant 212 $) $7, $6, $5, $4, $3, " ^ $2, $1, $- Recorded Forecast Circuit Mapping Labor $1,437 $1,931 $1,915 $1,72 $1,716 $288 $288 $288 Non-Labor $735 $1,266 $549 $498 $545 $119 $119 $119 Sub-Total $2,172 $3,197 $2,464 $2,218 $2,261 $47 $47 $47 Outage Data Management Labor Non-Labor Sub-Total Total Labor Non-Labor Total Expenses $1,837 $2,52 $2,19 $1,659 $1,77 $1,77 $1,77 $1,77 $691 $1,6 $415 $445 $585 $585 $585 $585 $2,528 $3,58 $2,65 $2,14 $2,292 $2,292 $2,292 $2,292 $3,274 $3,983 $4,15 $3,379 $3,423 $1,995 $1,995 $1,995 $1,426 $2,272 $964 $943 $1,13 $74 $74 $74 $4,7 $6,255 $5,69 $4,322 $4,553 $2,699 $2,699 $2, Circuit Mapping (Portion of FERC Account ) Circuit maps graphically represent how electricity flows though SCE s distribution grid, how flows can be changed by opening or closing switches, and other information necessary to safely and reliably operate the electrical distribution system. Maintaining accurate circuit maps is critical to the safety of SCE personnel and the public. Circuit maps also provide the necessary information to field personnel in order for them to identify the source of electricity for each piece of electrical equipment, thereby allowing employees to safely energize or de-energize sections of SCE s distribution grid to perform construction, maintenance, or other types of work on the system while minimizing the frequency and duration of customer interruptions. Circuit maps are also used to identify line sections and customers impacted by planned and unplanned outages for outage reporting required by the CPUC. 29 P. Grigaux

31 Workpaper - Southern California Edison / 215 GRC - APPLICATION For SCE crews to work safely and to operate the distribution grid effectively, circuit maps must be updated accurately and expeditiously whenever a change is made to the grid. In total, SCE maintains more than 4,5 distribution circuit maps that field personnel rely on for accurate circuitry and equipment information. To maintain circuit map accuracy, mapping personnel work closely with SCE s distribution and substation construction and maintenance organizations and SCE s engineering personnel to quickly update maps following structure and equipment replacements or creation of new circuits. Depending on the complexity of the system changes, updates can take anywhere from a few minutes of work to multiple hours in the most complex of instances. Table II-9 Circuit M apping Expenses Portion o f FERC Account R ecorded and A djusted /Forecast (1% CPUC-Jurisdictional Constant 212 $) Recorded Forecast Labor $1,437 $1,931 $1,915 $1,72 $1,716 $288 $288 $288 Non-Labor $735 $1,266 $549 $498 $545 $119 $119 $119 Total $2,172 $3,197 $2,464 $2,218 $2,261 $47 $47 $47 Ratio of Labor to Total 66% 6% 78% 78% 76% 71% 71% 71% Basis o f Forecast: 212 Recorded Cost, adjusted for new 82% Capital/18% O&M Split Basis o f Labor/Non-Labor Split: Five-Year (28-212) Average Recorded Labor/Non-Labor Ratio a) Cost Forecast Circuit mapping expenses have remained relatively constant over the periods. SCE expects these costs to remain constant at 212 levels going forward, and has therefore utilized the 212 recorded expenses as the basis for the 215 forecast. Up to now, all circuit mapping costs were charged to O&M. SCE has made a reduction to its forecast based on an accounting study that has determined that approximately 82 percent of circuit mapping costs should be charged to capital projects. Based on this study, and as shown in Table II-9, SCE has reduced its 215 O&M forecast from $2.261 million to $.47 million. 2. Outage Data Management (Portion of FERC Account ) Unplanned outages on SCE s system must be reported to the Commission pursuant to D Outage data is also used by SCE to determine reliability-based infrastructure replacement 3

32 31 Workpaper - Southern California Edison / 215 GRC - APPLICATION needs, to evaluate claims made against SCE by customers, to analyze commitments to customers under Service Guarantee Standards #2 and #3, and to investigate and respond to customer complaints regarding circuit problems. After every unplanned outage on the SCE distribution system, SCE staff reviews and verifies information on the number of customers affected by the outage, the duration of the outage, the cause of the outage, and the location of the outage. In addition, SCE staff reviews all outages with durations of twenty-four hours or more to determine if these outages meet the Commission s criteria for payment to customers under Service Guarantee Standard #2, which requires that, under certain conditions, SCE credit customers for every twenty four hour period they do not have power due to an unplanned outage. During storms, Grid Operations staff provides analytical support to the Grid Management Centers to help managers make strategic and logistical decisions regarding the use of field personnel and other SCE resources. Grid Operations support staff also provides information to SCE groups responsible for communication with the public and the media. By maintaining data on outages, Grid Operations support staff is able to support both the needs of SCE personnel in restoring power as efficiently and safely as possible and is able to keep the public and emergency response agencies informed as to the condition of the distribution grid. Most of the analysis performed by this group is based on data residing in the Outage Management System. One of the key inputs to this system is the Transformer Load Management (TLM) database linking customers to SCE s distribution transformer inventory. The analysts performing outage data management also support maintenance of TLM data. This data helps with the timely identification of common trouble locations, reduces the chance of multiple troublemen responding to the same report of trouble, and provides the information necessary to allow customers to receive advance notifications when a planned outage is scheduled. 31

33 Workpaper - Southern California Edison / 215 GRC - APPLICATION Table II-1 Outage Data M anagement Expenses Portion o f FERC Account R ecorded and A djusted /Forecast (1% CPUC-Jurisdictional Constant 212 $) Recorded Forecast Labor $1,837 $2,52 $2,19 $1,659 $1,77 $1,77 $1,77 $1,77 Non-Labor $691 $1,6 $415 $445 $585 $585 $585 $585 Total $2,528 $3,58 $2,65 $2,14 $2,292 $2,292 $2,292 $2,292 Ratio of Labor to Total 73% 67% 84% 79% 74% 74% 74% 74% Basis o f Forecast: 212 Recorded Cost Basis o f Labor/Non-Labor Split: 212 Recorded Labor/Non-Labor Ratio a) Cost Forecast Outage Data Management expenses have remained relatively constant over the last two years, and SCE expects the costs to perform these activities to remain at 212 levels. Therefore, as shown in Table II-1, SCE has utilized recorded 212 expenses as the basis for the 215 forecast. G. Service Guarantees 2 and 3 (FERC Account ) SCE provides its customers four guarantees related to service performance, two of which are driven by Customer Service processes and two by T&D processes. The two T&D-driven guarantees are Service Guarantees 2 and 3. Service Guarantee 2 is a commitment to customers that SCE will restore service within 24 hours of when first becoming aware of a power outage. Service Guarantee 3 promises to notify any affected customer of a planned outage at least three days before the outage occurs. SCE pays a $3 credit for each occurrence when these service guarantees are not met. These credits are currently 1 percent shareholder-funded. A claim may be made by a customer, but most occurrences are identified through SCE s own internal processes, procedures, and systems. The Commission has stated its belief that service guarantees benefit all customers by providing SCE with the incentive to meet its commitments to its customers. SCE agrees with this Commission conclusion. Since all customers benefit from the Service Guarantee Program, it is reasonable that a baseline level of service guarantee payouts should be funded by ratepayers as a normal cost of business, not by SCE s shareholders. 32

34 33 Workpaper - Southern California Edison / 215 GRC - APPLICATION Despite being receptive to the concept of establishing a baseline level to be funded in rates, the Commission found in in SCE s 26 GRC, Setting a baseline is difficult. It should be set at a level that sets a reasonable stretch target for the company to m eet...the record in this proceeding, however, is insufficient to develop such a target. 11 At that time, SCE had only two partial years of recorded data for use in establishing a reasonable baseline level. SCE now has nine years of the Service Guarantee Standards recorded results upon which to establish a reasonable baseline level of payouts to be included in rates. The program is now fully operational and established as part of SCE s business-as-usual operations. A baseline level of service guarantee payouts funded through rates would still provide incentive for SCE to meet or exceed the target because any amount paid above the baseline level would be paid by the shareholder. i i D , p

35 Workpaper - Southern California Edison / 215 GRC - APPLICATION Figure II-15 See workpapers Service Guarantee Expenses >p FERC Account Recorded /Forecast (1% CPUC-Jurisdictional Constant 212 $) $1,2 $1, $6 $4 $2 $- 1IIlllinn Labor Non-Labor Other Total Expenses Ratio of Labor to Total Recorded Forecast $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $671 $1,34 $592 $513 $489 $489 $489 $489 $671 $1,34 $592 $513 $489 $489 $489 $489 % % % % % % % % Basis of Forecast: 212 Recorded Costs Basis of Laboi/Non-LaborSplit: 1% Other a) Cost Forecast As shown in Figure II-15, Service Guarantee payouts decreased significantly from 29 to 21, and showed a slow, steady decrease from 21 to 212 as SCE has continued to refine and improve its customer outage notification process. SCE proposes a baseline level for Service Guarantees 2 and 3 equal to the recorded 212 payouts. SCE considers this a conservative estimate in light of the significant increase in planned outages SCE expects related to the planned maintenance and grid work forecast for Therefore, recorded 212 expenses should be established as a baseline target. Any payouts above this target would be funded by shareholders. H. Operational Facilities Maintenance From time to time it is necessary to replace or rebuild failed or failing substation facilities and buildings, such as HVAC systems, roof replacements, fencing, motorized gates, fuel tanks, carpet, 34 P. Grigaux

36 35 Workpaper - Southern California Edison / 215 GRC - APPLICATION flooring, and asphalt or concrete driveway work which undergo regular wear and tear. This type of work is important to maintain a safe working environment for employees and to protect the sensitive electronic equipment that monitors and controls the power grid from adverse weather conditions. Many o f these substation facilities have aged and are requiring an increase amount o f maintenance work. $7, $6, Figure II-16 Operational Facilities Maintenance Capital Expenditures WBS Element CET-PD-OT-FO See workpaper Recorded /Forecast page 188 (Total Company Nominal and Constant 212 $) $5, - $4, $3, $2, $1, $- Nominal $ 212 Constant $ $1,657 $932 $1,693 $1,297 $2,677 $4,6 $5,6 $5,749 $5,843 $5,985 $1,742 $1,3 $1,765 $1,31 $2,677 $4,527 $5,39 $5,39 $5,389 $5,389 Nominal $ 212 Constant $ Cost Forecast Operation Facilities spending remained relatively constant from , but began to increase in 212 as SCE begin to focus on maintaining aging substation facilities. Through 214, SCE will be performing a major project at the Santa Clara Substation, where a new building will be constructed to house test and maintenance crews and a four-bay garage building. In addition, in order to secure operators situational awareness and response to significant electrical events as SCE s bulk system continues to expand and become more complex, SCE plans to upgrade outdated facilities and equipment including consoles, video screens and telecommunication systems at several switching centers, which will keep the forecast at 214 spending levels going forward. 35

37 215 General Rate Case - APPLICATION In d e x o f W o r k p a p e r s EXHIBIT SCE-3, Volume 7 DOCUMENT PAGE(S) FERC Account Management and Operation of the Grid Control Center 1-2 FERC Account Operating Transmission Substations FERC Account Supervising and Operating Distribution Stations Operator Labor Savings Forecast FERC Account Transmission and Substation Storm Expense 65-8 FERC Account Distribution Storm Expense Capital Workpaper - Substation Storm 99 Capital Workpaper - Transmission Storm 1 Capital Workpaper - Distribution Storm 11 FERC Account Troublemen Patrol, Locate, and Repair Activities Troubleman Labor Savings Forecast FERC Account Streetlight Operations and Maintenance Capital Workpaper - Streetlights 143 Steel Pole Replacement Unit Cost Luminaire Replacement Unit Cost FERC Account Miscellaneous Operating Expenses FERC Account Service Guarantees - Standards 2 and Capital Workpaper - Facilities Operational 188 FERC Account Total Capital Summary for Grid Operations

38 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 1 Beginning of Workpapers for: A ctivity : 561 Load Dispatching GRID OPERATIONS - MANAGEMENT AND OPERATION OF THE GRID CONTROL CENTER Forecast Method Chosen 212$ () Recorded Forecast Labor Itemized Forecast 4,933 6,526 Non-Labor Itemized Forecast 1,745 2,38 Other N/A Total 6,678 8,834 Description of Activity: Grid Operations - Management and Operation of the Grid Control Center - Includes the cost of labor and other expenses incurred by SCE's centralized control centers for real time electric operations encompassing transmission and distribution systems. Activities include: execution of California Independent System Operator (CAISO) instructions regarding the operations o f the SCE electrical system under CAISO operational control; develop and maintain switching procedures under CAISO purview; coordinate planned outages consistent with CAISO approval; and maintaining situation awareness. Includes related costs such as: transportation expenses; meals, traveling, lodging, and incidental expenses; division overhead; and supply and tool expense. See Appendix C for Final Cost Centers included in this activity.

39 2 W orkpaper - Southern California Edison / 215 GRC - APPLICATION FER C A c c o u n t: A c tiv ity : W itn e s s : 561 Load D ispatching G R ID O P E R A T IO N S - M A N A G E M E N T A N D O P E R A T IO N O F TH E G R ID C O N T R O L C E N T E R Paul J G rig a u x DETERMINATION OF RECORDED/ADJUSTED Recorded Period $ () FERC Form 1 Recorded (Nominal $) Labor 3,689 3,966 4,53 8,86 8,922 N on-labor 47,797 46,977 51,447 42,656 38,488 O ther Total 51,486 5,943 55,977 51,516 47,41 Adjustm ents- (Nominal $) - see Appendix B for additional detail Labor (287) (4,86) (3,989) N on-labor (45,917) (45,222) (5,117) (41,14) (36,743) O ther Total (46,24) (45,211) (5,99) (45,19) (4,732) Recorded/Adjusted (Nominal $) Labor 3,42 3,977 4,548 4,774 4,933 N on-labor 1,88 1,755 1,33 1,552 1,745 O ther Total 5,282 5,732 5,878 6,326 6,678 E scalation: Labor N on-labor O ther Recorded/Adjusted (Constant 212$) Labor N on-labor O ther Total 3,883 4,43 4,867 4,93 4,933 2,22 1,886 1,48 1,585 1,745 o o o o o 5,95 6,289 6,275 6,515 6, Recorded Adjusted (212$) , Labor (std escl) R Non-Labor (std escl) Other (not escl)

40 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 3 FER C A c c o u n t: A c tiv ity : W itn e s s : 561 Load D ispatching G R ID O P E R A T IO N S - M A N A G E M E N T A N D O P E R A T IO N O F TH E G R ID C O N T R O L C E N T E R Paul J G rig a u x F o re c a s tin g M e th o d s - S u m m a ry o f R e s u lts o f a ll M e th o d s S tu d ie d - 212$ () 2 R e c o rd e d Y e a rs ( ): Results o f Averaging (A2) sd** Chosen _abor 4,932 4,932 4,932 1 no ''Jon-Labor 1,665 1,665 1,665 8 no Other no Total 6,597 6,597 6,597 n/a n/a 3 R e c o rd e d Y e a rs ( ): Results o f Linear Trending (T3) Results o f Averaging (A3) r2* Chosen sd** Chosen _abor 4,976 5,1 5,43.78 no 4,91 4,91 4,91 31 no 'Jon-Labor 1,916 2,85 2, no 1,58 1,58 1, no Other. no no Total 6,892 7,95 7,296 n/a n/a 6,49 6,49 6,49 n/a n/a 4 R e c o rd e d Y e a rs (29-212): Results o f Linear Trending (T4) Results o f Averaging (A4) r2* Chosen sd** Chosen _abor 5,197 5,362 5,528.7 no 4,783 4,783 4, no 'Jon-Labor 1,594 1,57 1,545.2 no 1,656 1,656 1, no Other. no no Total 6,791 6,932 7,73 n/a n/a 6,439 6,439 6,439 n/a n/a 5 R e c o rd e d Y e a rs ( ): Results o f Linear Trending (T5) Results o f Averaging (A5) o CM CO r2* Chosen sd** Chosen 5,391 5,654 5, no 4,63 4,63 4, no 1,473 1,387 1,32.31 no 1,729 1,729 1, no. no no 6,864 7,41 7,219 n/a n/a 6,332 6,332 6,332 n/a n/a O th e r M e th o d s : Last Recorded Year (LRY) Itemized Forecast (IF) Chosen Chosen _abor 4,933 4,933 4,933 no 6,48 6,27 6,526 yes Sion-Labor 1,745 1,745 1,745 no 2,14 2,196 2,38 yes Other no no Total 6,678 6,678 6,678 n/a 8,188 8,43 8,834 n/a F o re c a s t A d ju s tm e n ts : Base Forecast Method Adjustments*** Method IF 6,48 6,27 6,526 IF 2,14 2,196 2,38 N/A 8,188 8,43 8,834 * r2 = R Squared (Based on recorded years data) ** sd = standard deviation (Based on recorded years data) *** See Appendix B For Additional Detail

41 4 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 561 Load Dispatching A ctivity : GRID OPERATIONS - MANAGEMENT AND OPERATION OF THE GRID CONTROL CENTER R esults: F o reca sting R esults Labor Non-Labor Other Total Method Selected Itemized Forecast 6,48 6,27 6,526 Itemized Forecast 2,14 2,196 2,38 N/A 8,188 8,43 8,834 A nalysis o f Forecasting Methods Analysis of Linear Trending Method: In D , the CPUC stated that if costs have shown a trend in a certain direction over three or more years, the last year recorded is an appropriate base estimate. The expenses in this sub-account have been increasing over the recent years. As described in testimony, the use o f an itemized forecast is more appropriate to account fo r changes in regulations and work requirements. Analysis of Averaging Method: In D , the CPUC stated that for those sub-accounts which have significant fluctuations in recorded year expenses from year to year, an average of recorded expenses is appropriate. The expenses in this sub-account did not show significant fluctuations over the historical period. As described in testimony, the use of an itemized forecast is more appropriate to account for changes in regulations and work requirements. Analysis of Last Recorded Year (212): In D , the CPUC stated that if costs have shown a trend in a certain direction over three or more years, the last year recorded is an appropriate base estimate. The expenses in this sub-account have been increasing over the recent years. As described in testimony, the use o f an itemized forecast is more appropriate to account fo r changes in regulations and work requirements. Analysis of Itemized Forecast Method: As described in testim ony, the forecast expenses for this sub-account are based on the staffing and work volumes necessary fo r the test year. The use of an itemized forecast is more appropriate to account for changes in regulations and work requirements.

42 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 5 A ctivity : 561 Load Dispatching GRID OPERATIONS - MANAGEMENT AND OPERATION OF THE GRID CONTROL CENTER Recorded / Forecast $ () 1, 8, 6, Labor (std escl) Non-Labor (std escl) Cither (not escl) R ecorded Period Forecast Expenses (constant 212$) Labor (standard escalation) 3,883 4,43 4,867 4,93 4,933 6,48 6,27 6,526 Non-Labor (standard escalation) 2,22 1,886 1,48 1,585 1,745 2,14 2,196 2,38 Other (not escalatable) Total 5,95 6,289 6,275 6,515 6,678 8,188 8,43 8,834 $ () Labor Prior year Total 4,933 6,48 6,27 Change 1, Total 4,933 6,48 6,27 6,526 Non-Labor Prior year Total 1,745 2,14 2,196 Change Total 1,745 2,14 2,196 2,38 Other Prior year Total Change Total Total Change Labor 1, Non-Labor Other Total N/A 1,

43 6 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 561 Load Dispatching GRID OPERATIONS - MANAGEMENT AND OPERATION OF THE GRID CONTROL CENTER T h is p a g e s h o w s th e c h a n g e s in L a bor, N o n -L a b o r, a n d O th e r e x p e n d itu re s fo re c a s t d u rin g th ro u g h 2 1 5, in clu d in g re a s o n s fo r th e a d d itio n o f p e rs o n n e l (la b o r), in c re a s e d o ffice s u p p lie s re q u ire d due to an increase in a ctivity (non-labor) L a bor: 1,115 See T estim ony and S upporting W orkpapers. N on-labor: 395 See T estim ony and S upporting W orkpapers. O th e r: N ot applicable.

44 W orkpaper - Southern California Edison / 215 GRC - APPLICATION Load Dispatching A ctivity : GRID OPERATIONS - MANAGEMENT AND OPERATION OF THE GRID CONTROL CENTER T h is p a g e s h o w s th e c h a n g e s in L a bor, N o n -L a b o r, a n d O th e r e x p e n d itu re s fo re c a s t d u rin g th ro u g h 2 1 5, in c lu d in g re a s o n s fo r th e a d d itio n o f p e rs o n n e l (la b o r), in c re a s e d o ffice s u p p lie s re q u ire d d u e to an in c re a s e in a c tiv ity (n o n -la b o r) L a bor: 159 See T estim ony and S upporting W orkpapers. N on-labor: 56 See T estim ony and S upporting W orkpapers. O th e r: N o t a p p lic a b le.

45 8 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 561 Load Dispatching GRID OPERATIONS - MANAGEMENT AND OPERATION OF THE GRID CONTROL CENTER T h is p a g e s h o w s th e c h a n g e s in L a bor, N o n -L a b o r, a n d O th e r e x p e n d itu re s fo re c a s t d u rin g th ro u g h 2 1 5, in clu d in g re a s o n s fo r th e a d d itio n o f p e rs o n n e l (la b o r), in c re a s e d o ffice s u p p lie s re q u ire d d u e to an in c re a s e in a c tiv ity (n o n -la b o r) Labor: See T estim ony and S upp orting W orkpapers. N on-labor: 112 See T estim ony and S upp orting W orkpapers. O th er: N o t a p p lic a b le.

46 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 9 FERC A cco u n t: A c tiv ity : 561 Load Dispatching GRID OPERATIONS - MANAGEM ENT AND OPERATION OF THE GRID CONTROL CENTER APPENDIX A Detail Description of Final Cost Centers Included in This Activity

47 1 W orkpaper - Southern California Edison / 215 GRC - APPLICATION Activity: 561 Load Dispatching GRID OPERATIONS - MANAGEMENT AND OPERATION OF THE GRID CONTROL CENTER Description of Final Cost Centers included in this activity: * See Appendix C for Summary Final Cost Centers SUMMARY ENERGY RESOURCE RECOVERY ACCOUNT (ERRA) RECOVERABLE COSTS Includes costs recoverable through the Energy Resource Recovery Account (ERRA) and not included in this proceeding. SUMMARY GRID CONTROL CENTER AND POWER PROCUREMENT DIRECT TO FERC ACCOUNT Expenses charged directly to the FERC account for the Grid Control Center and Power Procurement. SUMMARY MANAGEMENT AND SUPERVISION Includes payroll, automotive, and other expenses incurred in managing, supervising, or directing activities of the department, division, or district offices. SUM M ARY TRAINING SEAT-TIME Includes payroll, automotive, and other expenses incurred by em ployees engaged in com pliance training activities or classes. Training activities may include com pany classes, seminars, orientation, video/d VD and web-based classes. Also includes payroll, automotive, and other expenses o f em ployees engaged in training activities w hether it be on-the-job training or off-the-job participation in department/division/district training programs. SUM M ARY TRANSMISSION INTERCONNECTION & PLANNING Includes payroll, automotive, and other expenses incurred in performing engineering studies and evaluations related to SCE's transmission grid and requests to interconnect to the grid. F55 NON INTERNAL MARKET MECHANISM (IMM) JOB ORDERS Includes charges from other departm ents within SCE to a T & D account for services provided in direct support o f T& D operations and m aintenance. C harges to this final cost center are not billed through the Internal Market Mechanism (IMM). F5377 OPERATING ENGINEERING Includes payroll, automotive, and other expense incurred by engineers in the Grid Control C enter for performing engineering services for the operation of the grid. F538 GRID CONTROL CENTER OPERATIONS Includes payroll, automotive, and other expenses incurred by personnel managing, supervising, and performing operating and engineering activities as part of the grid operations center. F5385 NON-STATUTORY WESTERN ELECTRICITY COORDINATING COUNCIL (WECC) DUES Dues paid to the W estern Electricity Coordinating Council by the Grid Control Center for membership. F5392 CHARGEBACKS - INFORMATION TECHNOLOGY / CORPORATE REAL ESTATE Includes Information Technology (IT) and C orporate Real Estate costs charged back to the business unit, but can also include: overseeing m aintenance of com puter applications; installing and m aintaining PC Local Area Network/W ide Area Network; supporting legacy system and facility m aintenance. F LO AD DISPATCH Closed final cost center that includes Transmission Load Dispatch expenses.

48 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 11 FERC A cco u n t: Activity: 561 Load Dispatching GRID OPERATIONS - M ANAGEM ENT AND OPERATION OF THE GRID CONTROL CENTER Description of Final Cost Centers included in this activity: * See Appendix C for Summary Final Cost Centers F MARKET ADMINISTRATION, MONITORING AND COMPLIANCE SERVICES / CLAIMS Grid M anagem ent C enter - Scheduling - System Control. Also may include am ounts accrued by financial accounting to cover losses due to uncollectible dam age claim s and the am ounts collected on previously w ritten-off claims. F5257 INSPECTION 8. M AINTENANCE OF TRANSMISSION SUBSTATION MISCELLANEOUS EQUIPMENT Includes cost o f labor and materials used and expenses incurred in inspecting and maintaining substation equipm ent not specifically provided for in any other final cost center (FCC). Such item s include: cable trench covers; steel and wood pole racks; disconnect switches; relays and other control house equipm ent; auxiliary current transform ers; potential transform ers including bushings; lightning arrestors; potential devices and coupling capacitors; current transform ers including bushings; supervisory and telem etering equipm ent; insulators; oil line tanks; cooling towers; direct current (DC) grounds; and mobile units. F SAFETY Includes labor, m aterial, contract, chargebacks and other non-labor costs incurred in providing and attending em ployee safety/crew meetings, first aid meetings, safety congresses, safety fairs, safety stand-downs, and fire extinguisher dem onstration meetings. Also includes costs associated with audio metric testing o f em ployees, first aid supplies, safety equipm ent, and associated travel time, and board and lodging. F TRANSMISSION PARTICIPANT SHARE COSTS Includes SCE's contract paym ents made to the operators o f jointly owned transm ission facilities where SCE owns a partial interest. Includes costs o f inspection and m aintenance incurred by the facility owner. F GRID INTERCONNECTIONS & METHOD OF SERVICE Includes payroll, automotive, and other expenses incurred by personnel managing grid interconnection requests and method of service of study (MOS) scheduling. F TRANSMISSION STRATEGY & SPECIAL ASSESSMENTS Includes payroll, automotive, and other expenses incurred by the Reliability Com pliance Group in evaluating, m aintaining, and im plem enting National Energy Regulatory (NERC) Critical Infrastructure Protection (CIP) standards within T&D impacted organization. F FACILITY MAINTENANCE / MANAGEMENT Includes labor, contract, and other expenses incurred in the m aintenance of structures, parking areas, and associated facilities/system s including, but not limited to, lighting and electrical, air conditioning and heating, water, plumbing, water-heating, and elevators. Includes labor, contract, and other expenses incurred in the care o f landscape, for activities relating to environm ental studies and remedial action, and for cleaning buildings, furniture, and equipment. Includes labor and other expenses for structural engineering, civil engineering, and mechanical engineering in support of facility maintenance activities.

49 12 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 561 Load Dispatching GRID OPERATIONS - MANAGEMENT AND OPERATION OF THE GRID CONTROL CENTER Recorded/Adjusted (Constant 212$ By Final Cost Center $ () * See Appendix C for Summary Final Cost Centers SUMMARY SUMMARY ENERGY RESOURCE RECOVERY ACCOUNT (ERRA) RECOVERABLE COSTS GRID CONTROL CENTER AND POWER PROCUREMENT DIRECT TO FERC ACCOUNT (2) (1) (9) SUMMARY MANAGEMENT AND SUPERVISION SUMMARY TRAINING SEAT-TIME SUMMARY F55 TRANSMISSION INTERCONNECTION & PLANNING NON INTERNAL MARKET MECHANISM (IMM) JOB ORDERS F5377 OPERATING ENGINEERING 2,163 1,761 1,819 2,117 2,497 F538 GRID CONTROL CENTER OPERATIONS 3,56 3,947 3,683 3,431 3,327 F5385 F5392 NON-STATUTORY WESTERN ELECTRICITY COORDINATING COUNCIL (WECC) DUES CHARGEBACKS - INFORMATION TECHNOLOGY / CORPORATE REAL ESTATE 224 (2) F LOAD DISPATCH 118 F F5257 MARKET ADMINISTRATION, MONITORING AND COMPLIANCE SERVICES / CLAIMS INSPECTION & MAINTENANCE OF TRANSMISSION SUBSTATION MISCELLANEOUS EQUIPMENT F SAFETY F TRANSMISSION PARTICIPANT SHARE COSTS (1) F F GRID INTERCONNECTIONS & METHOD OF SERVICE TRANSMISSION STRATEGY & SPECIAL ASSESSMENTS F FACILITY MAINTENANCE / MANAGEMENT Total 5,96 6,289 6,274 6,516 6,678 ** Due to rounding, totals may not tie to other workpaper pages.

50 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 13 FERC A cco u n t: A c tiv ity : 561 Load Dispatching GRID OPERATIONS - M ANAGEM ENT A ND OPERATION OF THE GRID CONTROL CENTER APPENDIX B Detail of Total Company Adjustments to Recorded

51 14 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 561 Load Dispatching GRID OPERATIONS - MANAGEMENT AND OPERATION OF THE GRID CONTROL CENTER Detail o f Total C om p any A d ju s tm e n ts to R ecorded E xpenses A d js - (N om inal $) $ () Labor (287) (4,86) (3,989) Non-Labor (45,917) (45,222) (5,117) (41,14) (36,743) O ther Total (46,24) (45,211) (5,99) (45,19) (4,732) Company W ide Adjustment 1 GRC-JAB-CW -NONUTILCR This adjustm ent reverses the non-utility affiliate credits related to expenses recorded in one or more o f the final cost centers included in this activity and charged to non-utility affiliates. These adjustm ents are appropriate because all recorded non-utility affiliate credits were refunded to custom ers through the Base Revenue Requirem ent Balancing Account (BRRBA) pursuant to D If these adjustm ents were not made, non-utility affiliate credits would be refunded to customers twice: (1) through adjustments to the BRRBA; and (2) through reductions to rates. Labor 28 N on-labor 4 O ther Total 32 Company W ide Adjustment 2 GRC-JAB-CW -ISO COSTS ERRA This ratemaking adjustment removes Independent System Operator (ISO) Charges recorded and recovered through the Energy Resource Recovery Account (ERRA). Labor N on-labor (42,196) (41,55) (45,524) (4,489) (36,735) O ther Total (42,196) (41,55) (45,524) (4,489) (36,735) Organizational Unit Adjustm ent 1 TDBU-IDP-OU-REMAPP_TO_ This consolidation adjustment re-maps the expenses from activity to Labor N on-labor O ther Total Organizational Unit Adjustm ent 2 TDBU-IDP-OU-REMAPP_TO _ This consolidation adjustment re-maps the expenses from activity , , , , , , , , , and to Labor (1) N on-labor O ther Total (1)

52 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 15 A ctivity : 561 Load Dispatching GRID OPERATIONS - MANAGEMENT AND OPERATION OF THE GRID CONTROL CENTER Detail o f Total C om p any A d ju s tm e n ts to R ecorded E xpenses A d js - (N om inal $) $ () Organizational Unit Adjustment 3 TDBU-IDP-OU-REMAPP.J O This consolidation adjustment re-maps the expenses from activity and to Labor (53) Non-Labor (2) O ther Total (55) Organizational Unit Adjustment 4 TDBU-IDP-OU-REMAPP.J O This consolidation adjustment re-maps the expenses from activity , , , , and to Labor Non-Labor (225) (389) 355 O ther Total (225) (389) 355 Organizational Unit Adjustment 5 TDBU-IDP-OU-REMAPP.J O This consolidation adjustment re-maps the expenses from activity , , , , , and to Labor (289) (1) Non-Labor (211) (3) O ther Total (5) (4) Organizational Unit Adjustment 6 TDBU-IDP-OU-REMAPP.J O This consolidation adjustment re-maps the expenses from activity , , and to Labor (61) Non-Labor (376) O ther Total (977) Organizational Unit Adjustment 7 TDBU -IDP-OU-FERCJDRDER668 _561.17_ TO This adjustment remaps the expenses from activity to Labor (4,12) (3,38) Non-Labor (485) (218) O ther Total (4,587) (3,598)

53 16 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 561 Load Dispatching GRID OPERATIONS - MANAGEMENT AND OPERATION OF THE GRID CONTROL CENTER Detail o f Total C om p any A d ju s tm e n ts to R ecorded Expenses A d js - (N om inal $) $ () Organizational Unit Adjustm ent 8 TDBU-IDP-OU-REM OVE_FERC_ORDER668_566_TO _561.5 These expenses are remapped in accordance with a FERC Order 668 to report Accounting for System Planning and Standards Developm ent to FERC for years The FERC Form I adjustm ent is being removed in order to remap the Transmission & Interconnection Planning final cost centers from activity to activity Labor Non-Labor (3,667) (4,335) (4,662) O ther Total (3,667) (4,335) (4,662)

54 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 17 FERC A cco u n t: A c tiv ity : 561 Load Dispatching GRID OPERATIONS - M ANAG EM ENT AND OPERATION OF THE GRID CONTROL CENTER APPENDIX C Final Cost Centers Included in This Activity

55 18 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 561 Load Dispatching GRID OPERATIONS - MANAGEMENT AND OPERATION OF THE GRID CONTROL CENTER Final Cost Centers included in this activity: Summary Final Cost Centers: ENERGY RESOURCE RECOVERY ACCOUNT (ERRA) RECOVERABLE COSTS F95614 F95618 GRID CONTROL CENTER AND POWER PROCUREMENT DIRECT TO FERC ACCOUNT F9561 F91561 F95611 F95612 F F MANAGEMENT AND SUPERVISION F5386 F5387 TRAINING SEAT-TIME F F F8111 TRANSMISSION INTERCONNECTION & PLANNING F52 F56 F58 F F95615 F915615

56 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 19 A c tiv ity : 561 Load Dispatching GRID OPERATIONS - MANAGEMENT AND OPERATION OF THE GRID CONTROL CENTER Individual Final Cost Centers: F55 F5377 F538 F5385 F5392 F F F5257 F F F F F915614

57 2 W orkpaper - Southern California Edison / 215 GRC - APPLICATION End of Workpapers for: FERC A cco u n t: A c tiv ity : 561 Load Dispatching GRID OPERATIONS - M ANAG EM ENT AND OPERATION OF THE GRID CONTROL CENTER

58 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 21 Beginning of Workpapers for: A ctivity : 562 Station Expenses GRID OPERATIONS - OPERATING TRANSMISSION STATIONS Forecast Method Chosen 212$ () Recorded Forecast Labor Itemized Forecast 12,683 12,985 Non-Labor Itemized Forecast 5,621 5,682 Other N/A Total 18,34 18,667 Description of Activity: Grid Operations - Operating Transmission Stations - Includes the cost o f labor, materials, and expenses incurred in operating transmission substations and switching stations. Includes labor incurred fo r activities such as: supervising station operation; inspecting station equipment; keeping station logs and records and preparing reports on station operation; and operating switching and other station equipment. Includes related costs such as: transportation expenses; meals, traveling, lodging, and incidental expenses; division overhead; and supply and tool expense. See Appendix C for Final Cost Centers included in this activity.

59 22 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 562 Station Expenses GRID OPERATIONS - OPERATING TRANSMISSION STATIONS DETERMINATION OF RECORDED/ADJUSTED I Recorded Period $ () FERC Form 1 Recorded (Nominal $) Labor 1,987 13,342 14,151 13,524 13,844 N on-labor 7,666 8,62 6,738 6,95 8,139 O ther Total 18,653 21,944 2,889 2,429 21,983 Adjustm ents- (Nominal $) - see Appendix B for additional detail Labor N on-labor O ther (1,331) (3,941) (3,197) (4,978) (2,195) (1,741) (1,471) (2,167) (1,161) (2,518) Total (5,272) (8,175) (3,936) (3,638) (3,679) Recorded/Adjusted (Nominal $) Labor N on-labor O ther 9,656 3,725 1,145 3,624 11,956 4,997 12,53 4,738 12,683 5,621 Total 13,381 13,769 16,953 16,791 18,34 Escalation: Labor N on-labor O ther Recorded/Adjusted (Constant 212$) Labor 11,21 11,231 12,794 12,448 12,683 N on-labor 4,7 3,895 5,291 4,84 5,621 O ther Total 15,28 15,126 18,85 17,288 18,34 Recorded Adjusted (212$) 2, 16, 12, 8, 4, Labor (std escl) Non-Labor (std escl) Other (not escl)

60 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 23 FERC A c c o u n t: A c tiv ity : W itn e s s : 5 62 S ta tio n E xpenses G R ID O P E R A T IO N S - O P E R A T IN G T R A N S M IS S IO N S TATIO N S Paul J G rig a u x F o re c a s tin g M e th o d s - S u m m a ry o f R e s u lts o f a ll M e th o d s S tu d ie d - 212$ () 2 R e c o rd e d Y e a rs ( ): Results o f Averaging (A2) o CM CO sd** Chosen _abor 12,565 12,565 12, no ''Jon-Labor 5,23 5,23 5, no Other no Total 17,795 17,795 17,795 n/a n/a 3 R e c o rd e d Y e a rs ( ): Results o f Linear Trending (T3) Results o f Averaging (A3) r2* Chosen sd** Chosen _abor 12,531 12,475 12,42. 1 no 12,641 12,641 12, no 'Jon-Labor 5,581 5,746 5, no 5,25 5,25 5,25 32 no Other. no no Total 18,112 18,221 18,331 n/a n/a 17,891 17,891 17,891 n/a n/a 4 R eco rd e d Years (29-212): Results o f Linear Trending (T4) Results o f Averaging (A4) r2* Chosen sd** Chosen _abor 13,291 13,693 14,94.52 no 12,289 12,289 12, no Sion-Labor 6,93 6,566 7,38.66 no 4,912 4,912 4, no Other. no no Total 19,384 2,259 21,132 n/a n/a 17,21 17,21 17,21 n/a n/a 5 R e c o rd e d Y e a rs ( ): Results o f Linear Trending (T5) Results o f Averaging (A5) 213 ''tf o CM 215 r2* Chosen 213 o CM 215 sd** Chosen 13,397 13,851 14,35.73 no 12,35 12,35 12, no 5,983 6,4 6, no 4,731 4,731 4, no. no no 19,38 2,251 21,122 n/a n/a 16,766 16,766 16,766 n/a n/a O th e r M e th o d s : Last Recorded Year (LRY) Itemized Forecast (IF) Chosen Chosen _abor 12,683 12,683 12,683 no 12,985 12,985 12,985 yes Sion-Labor 5,621 5,621 5,621 no 5,682 5,682 5,682 yes Other no no Total 18,34 18,34 18,34 n/a 18,667 18,667 18,667 n/a F o re c a s t A d ju s tm e n ts : Base Forecast Method Adjustments*** Method IF 12,985 12,985 12,985 IF 5,682 5,682 5,682 N/A 18,667 18,667 18,667 * r2 = R Squared (Based on recorded years data) ** sd = standard deviation (Based on recorded years data) *** See Appendix B For Additional Detail

61 24 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 562 Station Expenses GRID OPERATIONS - OPERATING TRANSMISSION STATIONS R esults: F o reca sting R esults Method Selected Labor Itemized Forecast 12,985 12,985 12,985 Non-Labor Itemized Forecast 5,682 5,682 5,682 Other N/A Total 18,667 18,667 18,667 A nalysis o f Forecasting Methods Analysis of Linear Trending Method: In D , the CPUC stated that if costs have shown a trend in a certain direction over three or more years, the last year recorded is an appropriate base estimate. The expenses in this sub-account have been increasing over the historical period with a minor fluctuation in 211. As described in testim ony, the use of an itemized forecast is appropriate because the forecast is based on the staffing and coverage levels necessary to operate and monitor the electric grid forecast for the test year. Analysis of Averaging Method: In D , the CPUC stated that for those sub-accounts which have significant fluctuations in recorded year expenses from year to year, an average of recorded expenses is appropriate. The expenses in this sub-account show little fluctuation, and as described in testimony, the use of an itemized forecast is appropriate because the forecast is based on the staffing and coverage levels necessary to operate and monitor the electric grid forecast for the test year. Analysis of Last Recorded Year (212): In D , the CPUC stated that if costs have shown a trend in a certain direction over three or more years, the last year recorded is an appropriate base estimate. The expenses in this sub-account have been increasing over the historical period with a minor fluctuation in 211. As described in testim ony, the use of an itemized forecast is appropriate because the forecast is based on the staffing and coverage levels necessary to operate and monitor the electric grid forecast for the test year. Analysis of Itemized Forecast Method: As described in testimony, the use of an itemized forecast is appropriate because the forecast is based on the staffing and coverage levels necessary to operate and monitor the electric grid.

62 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 25 A ctivity : 562 Station Expenses GRID OPERATIONS - OPERATING TRANSMISSION STATIONS Recorded / Forecast $ () 8, , , , A Labor (std escl) Nan-Labor (std escl) Other (not escl) I R ecorded Period Forecast Expenses (constant 212$) Labor (standard escalation) 11,21 11,231 12,794 12,448 12,683 12,985 12,985 12,985 Non-Labor (standard escalation) 4,7 3,895 5,291 4,84 5,621 5,682 5,682 5,682 Other (not escalatable) Total 15,28 15,126 18,85 17,288 18,34 18,667 18,667 18,667 $ ( ) Labor Prior year Total 12,683 12,985 12,985 Change 32 Total 12,683 12,985 12,985 12,985 Non-Labor Prior year Total 5,621 5,682 5,682 Chanqe 61 Total 5,621 5,682 5,682 5,682 Other Prior year Total Change Total Total Change Labor 32 Non-Labor 61 Other Total N/A 363

63 26 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 562 Station Expenses GRID OPERATIONS - OPERATING TRANSMISSION STATIONS T h is p a g e s h o w s th e c h a n g e s in L a bor, N o n -L a b o r, a n d O th e r e x p e n d itu re s fo re c a s t d u rin g th ro u g h 2 1 5, in clu d in g re a s o n s fo r th e a d d itio n o f p e rs o n n e l (la b o r), in c re a s e d o ffice s u p p lie s re q u ire d du e to an in c re a s e in a c tiv ity (n o n -la b o r) L a bor: 3 2 See T estim ony and S upporting W orkpapers. N on-labor: 61 See T estim ony and S upporting W orkpapers. O th e r: N ot applicable.

64 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 27 A ctivity : 562 Station Expenses GRID OPERATIONS - OPERATING TRANSMISSION STATIONS T h is p a g e s h o w s th e c h a n g e s in L a bor, N o n -L a b o r, a n d O th e r e x p e n d itu re s fo re c a s t d u rin g th ro u g h 2 1 5, in c lu d in g re a s o n s fo r th e a d d itio n o f p e rs o n n e l (la b o r), in c re a s e d o ffice s u p p lie s re q u ire d due to an incre ase in activity (non-labor) Labor: N o t a p p lic a b le. N on-labor: N o t a p p lic a b le. O th er: N o t a p p lic a b le.

65 28 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 562 Station Expenses GRID OPERATIONS - OPERATING TRANSMISSION STATIONS T h is p a g e s h o w s th e c h a n g e s in Labor, N o n -L a b o r, a n d O th e r e x p e n d itu re s fo re c a s t d u rin g th ro u g h 2 1 5, in clu d in g re a s o n s fo r th e a d d itio n o f p e rs o n n e l (la b o r), in c re a s e d o ffice s u p p lie s re q u ire d due to an incre ase in activity (non-labor) Labor: N o t a p p lic a b le. N on-labor: N o t a p p lic a b le. O th er: N o t a p p lic a b le.

66 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 29 A c tiv ity : 562 Station Expenses GRID OPERATIONS - OPERATING TRANSMISSION STATIONS APPENDIX A Detail Description of Final Cost Centers Included in This Activity

67 3 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A c tiv ity : 562 Station Expenses GRID OPERATIONS - OPERATING TRANSMISSION STATIONS Description of Final Cost Centers included in this activity: * See Appendix C for Summary Final Cost Centers SUMMARY FACILITY SERVICE AGREEMENTS Includes payments received for w ork performed under Facility Service Agreements (FSA). SUMMARY INSPECTION & MAINTENANCE OF TRANSMISSION SUBSTATION MISCELLANEOUS EQUIPMENT Includes cost o f labor and m aterials used and expenses incurred in inspecting and maintaining substation equipm ent not specifically provided for in any other final cost center (FCC). Such item s include: cable trench covers; steel and wood pole racks; disconnect switches; relays and other control house equipment; auxiliary current transform ers; potential transform ers including bushings; lightning arrestors; potential devices and coupling capacitors; current transform ers including bushings; supervisory and telem etering equipm ent; insulators; oil line tanks; cooling towers; direct current (DC) grounds; and mobile units. SUM M ARY OPERATING TRANSMISSION SUBSTATION EQUIPMENT Includes labor of operators and expenses incurred in operating substations and substation equipment. SUMMARY SUBSTATION OPERATIONS SUPERVISION Includes payroll, automotive, and other expenses o f Substation operations supervisors and assistant substation operations supervisors for performing supervision of substation operating. SUM M ARY TOOLS Includes payroll, automotive, and other expenses incurred in ordering, returning, receiving, storing, issuing, repairing, and inventorying tools. Also includes the following: tool inventories; the cost o f tool items o f small value or short life; m aterial costs in connection with tool repair; testing rubber goods; all other expenses directly connected w ith the accounting and handling of tools; the preparation and inventory o f tools on trucks; and debits and/or credits for annual inventory adjustments. SUM M ARY TRAINING DELIVERY Includes payroll, automotive, and other expenses incurred for the development of training curriculum, training materials, instructor time, and test development. SUMMARY TRANSMISSION PARTICIPANT SHARE COSTS Includes SCE's contract paym ents made to the operators of jointly owned transm ission facilities where SCE owns a partial interest. Includes costs o f inspection and m aintenance incurred by the facility owner. SUMMARY TRANSMISSION SUBSTATION CIRCUIT BREAKER MAINTENANCE Includes substation m aintenance cost o f labor and m aterials used and expenses incurred in repairing, testing, and overhauling circuit breakers including bushing m aintenance (except cleaning and washing). Also includes the cost o f labor, m aterials used, and expenses incurred in testing, calibrating, and inspecting station equipm ent for the purpose of checking its perform ance including trip testing and ductoring o f circuit breakers. Also includes printed revisions and test reports completed by field personnel. SUMMARY TRANSMISSION SUBSTATION RELAY MAINTENANCE Includes substation m aintenance cost o f labor and m aterials used and expenses incurred in repairing, testing, and overhauling substation relays. Also includes the cost o f labor, materials used, and expenses incurred in testing, calibrating, and inspecting substation relays for the purpose of checking its performance.

68 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 31 A c tiv ity : 562 Station Expenses GRID OPERATIONS - OPERATING TRANSMISSION STATIONS Description of Final Cost Centers included in this activity: * See Appendix C for Summary Final Cost Centers F514 ADVANCED TECHNOLOGY (AT) - SATELLITE COMMUNICATIONS Payments made to General Electric for lease of satellite transponder used to m onitor substation equipment. F FACILITY MAINTENANCE / MANAGEMENT Includes labor, contract, and other expenses incurred in the m aintenance of structures, parking areas, and associated facilities/system s including, but not limited to, lighting and electrical, air conditioning and heating, water, plumbing, water-heating, and elevators. Includes labor, contract, and other expenses incurred in the care of landscape, for activities relating to environm ental studies and remedial action, and for cleaning buildings, furniture, and equipment. Includes labor and other expenses for structural engineering, civil engineering, and mechanical engineering in support of facility maintenance activities. F F9562 MISCELLANEOUS SUBSTATION EXPENSE Includes payroll, automotive, and other general costs and expenses not assignable to other accounts such as: telephone expense, publications and printing services, inspection and repair of office m achines, w ater services, lost tim e resulting from vehicle breakdowns and all other types of motorized equipm ent including private vehicles used in Com pany service, m iscellaneous stationery and office supplies not obtainable from the corporate w a re h o u se, interviews or qualification examinations, etc. INFORMATION TECHNOLOGY (IT) IMM DIRECT TO FERC ACCOUNT Expenses charged directly to the FERC account for the Information Technology (IT) Internal Market Mechanism (IMM).

69 32 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 562 S tation Expenses GRID OPERATIONS - OPERATING TRANSMISSION STATIONS Paul J G rig au x Recorded/Adjusted (Constant 212$ By Final Cost Center $ ( ) * See Appendix C for Summary Final Cost Centers SUMMARY FACILITY SERVICE AGREEMENTS SUMMARY SUMMARY INSPECTION & MAINTENANCE OF TRANSMISSION SUBSTATION MISCELLANEOUS EQUIPMENT OPERATING TRANSMISSION SUBSTATION EQUIPMENT 1 4, , , , ,818 SUMMARY SUBSTATION OPERATIONS SUPERVISION ,13 1,485 SUMMARY TOOLS 1 3 SUMMARY TRAINING DELIVERY (1) SUMMARY TRANSMISSION PARTICIPANT SHARE COSTS SUMMARY SUMMARY F514 TRANSMISSION SUBSTATION CIRCUIT BREAKER MAINTENANCE TRANSMISSION SUBSTATION RELAY MAINTENANCE ADVANCED TECHNOLOGY (AT) - SATELLITE COMMUNICATIONS 1 F FACILITY MAINTENANCE / MANAGEMENT F MISCELLANEOUS SUBSTATION EXPENSE F9562 INFORMATION TECHNOLOGY (IT) IMM DIRECT TO FERC ACCOUNT Total 15,29 1 5, , , ,34 ** Due to rounding, totals may not tie to other workpaper pages.

70 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 33 A c tiv ity : 562 Station Expenses GRID OPERATIONS - OPERATING TRANSMISSION STATIONS APPENDIX B Detail of Total Company Adjustments to Recorded

71 34 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 562 Station Expenses GRID OPERATIONS - OPERATING TRANSMISSION STATIONS Detail o f Total C om pany A d ju s tm e n ts to R ecorded E xpenses A d js - (N om inal $) $ () Labor (1,331) (3,197) (2,195) (1,471) (1,161) Non-Labor (3,941) (4,978) (1,741) (2,167) (2,518) O ther Total (5,272) (8,175) (3,936) (3,638) (3,679) O rganizational Unit Adjustm ent 1 TDBU-IDP-OU-REM APP_TO _ This consolidation adjustment re-maps the expenses from activity and to Labor ,114 1,199 Non-Labor O ther Total ,596 1,485 O rganizational Unit Adjustm ent 2 TDBU-IDP-OU-REM OVED_TRAINING_TOPSIDE This adjustment removes training expenses. Labor 1, Non-Labor 1, O ther Total 2,353 1,394 Organizational Unit Adjustm ent 3 TDBU-IDP-OU-RELAYROUTINE_TO _ This adjustm ent m oves Routine Relay expenses from FERC 57 (57.281) to FERC 562 (562.17) to move final cost centers to the correct activity. Labor Non-Labor O ther 58 4 Total 62 Organizational Unit Adjustm ent 4 TDBU-IDP-OU-MOVE._TOPSIDE_.F52326 This adjustment moves Training Delivery am ounts from FERC 566 to FERC 562. Labor 44 (334) Non-Labor 341 (413) O ther Total 781 (747)

72 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 35 A ctivity : 562 Station Expenses GRID OPERATIONS - OPERATING TRANSMISSION STATIONS Detail o f Total C om pany A d ju s tm e n ts to R ecorded E xpenses A d js - (N om inal $) $ () O rganizational Unit Adjustm ent 5 TDBU-IDP-OU-REM APP_from _562_57 This adjustm ent m oves Internal Market M echanism (IM M) H ardw are/softw are/c om m unication related to Transm ission from FERC 562 to FERC 57. Labor N on-labor O ther Total O rganizational Unit Adjustm ent 6 TDBU-IDP-OU-LABOR_TO _NON LABOR This adjustment corrects any labor that is associated with non-labor. Labor (1) Non-Labor 1 O ther Total Organizational Unit Adjustm ent 7 TDBU-IDP-OU-LEASE_PYM T This adjustment moves the transponder lease payment to other. Labor (3) Non-Labor (1,95) (1,891) O ther 1,95 1,894 Total Organizational Unit Adjustm ent 8 TDBU-IDP-OU-REMAPP_TO _ This consolidation adjustment re-maps the expenses from activity and to Labor Non-Labor (4) (8) (1) (5) O ther Total (4) (8) (1) (5) Organizational Unit Adjustm ent 9 TDBU-IDP-OU-CBS_TO _DIST This adjustment moves distribution circuit breaker (CB) maintenance charges from FERC 562 and 57 to FERC 582 and 592. The total transfer is estimated based on the difference between what was charged in 28 and what should have been charged in 28. Labor (11) Non-Labor (24) O ther Total (125)

73 36 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 562 Station Expenses GRID OPERATIONS - OPERATING TRANSMISSION STATIONS Detail o f Total C om pany A d ju s tm e n ts to R ecorded E xpenses A d js - (N om inal $) $ () O rganizational Unit Adjustm ent 1 TDBU-IDP-OU-REMAPP_TO_ This consolidation adjustment re-maps the expenses from activity , , , , and to Labor N on-labor (1) (2) (561) O ther Total (1) (2) (561) O rganizational Unit Adjustm ent 11 TDBU-IDP-OU-M OVE_TOPSIDE In 211 only, this adjustm ent m oves the expense for Substation O perators Supervision from FERC 56, 58 and 582 to FERC 562 where the operators were remapped. Labor (1,142) N on-labor (385) O ther Total (1,527) O rganizational Unit Adjustm ent 12 TDBU-IDP-OU-THIRD_PARTY_CONTRACTS TO_ This adjustment consolidates third party contract final cost centers from activity , , , , , , , , and to Labor N on-labor (832) (694) (734) (68) (78) O ther Total (832) (694) (734) (68) (78) Organizational Unit Adjustment 13 TDBU-IDP.KW K-OUX-TRANS_LEASE_IT This adjustment transfers Transponder Lease payment from to 931 Infrastructure Technology. Labor N on-labor O ther (1,95) (1,894) Total (1,95) (1,894) O rganizational Unit Adjustm ent 14 TDBU-IDP-OU-REM APP._TO_ This consolidation adjustment re-maps the expenses from activity , , , , , and to Labor (433) (813) (1,59) (342) N on-labor (227) (988) (1,625) (297) O ther Total (66) (1,81) (3,134) (639)

74 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 37 A ctivity : 562 Station Expenses GRID OPERATIONS - OPERATING TRANSMISSION STATIONS Detail o f Total C om pany A d ju s tm e n ts to R ecorded E xpenses A d js - (N om inal $) $ () Organizational Unit Adjustm ent 15 TDBU-IDP-OU-REM APP_TO _ This consolidation adjustment re-maps the expenses from activity , , , , , , , , , and to Labor (1,461) (2,995) (2,978) (2,419) (2,36) Non-Labor (1,149) (1,528) (1,158) (1,613) (1,53) O ther Total (2,61) (4,523) (4,136) (4,32) (3,89)

75 38 W orkpaper - Southern California Edison / 215 GRC - APPLICATION THIS PAGE INTENTIONALLY LEFT BLANK

76 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 39 A c tiv ity : 562 Station Expenses GRID OPERATIONS - OPERATING TRANSMISSION STATIONS APPENDIX C Final Cost Centers Included in This Activity

77 4 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 562 Station Expenses GRID OPERATIONS - OPERATING TRANSMISSION STATIONS Final Cost Centers included in this activity: Summary Final Cost Centers: FACILITY SERVICE AGREEMENTS F5482 F5493 F5495 INSPECTION & MAINTENANCE OF TRANSMISSION SUBSTATION MISCELLANEOUS EQUIPMENT F5166 F52561 F52569 F F52523 F F F F F F F OPERATING TRANSMISSION SUBSTATION EQUIPMENT F5393 F5484 F5485 F5488 F5492 F5497 F5499 F5549 F5553 F5558 F5559 F5562 F5563 F5564 F5569 F5572 F52595 F52824 F52326 F52327 F F52338 F F F52737 F52739 F52743 F52745 F52749 F52757 F52761 F52715 F52717 F52719 F F F52712 F F F F SUBSTATION OPERATIONS SUPERVISION F541 F547 F5413 F5419 TOOLS F548 F52487 TRAINING DELIVERY F52326 F816 TRANSMISSION PARTICIPANT SHARE COSTS F588 F52157 F52158 F5216 F F F TRANSMISSION SUBSTATION CIRCUIT BREAKER MAINTENANCE F51554 F51556 F52763 F5284 F5287 F52812 F52817 F52823 F TRANSMISSION SUBSTATION RELAY MAINTENANCE F F F F F52578 F F F F F F527566

78 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 41 A c tiv ity : 562 Station Expenses GRID OPERATIONS - OPERATING TRANSMISSION STATIONS Individual Final Cost Centers: F514 F F F9562

79 42 W orkpaper - Southern California Edison / 215 GRC - APPLICATION End of Workpapers for: A ctivity : 562 Station Expenses GRID OPERATIONS - OPERATING TRANSMISSION STATIONS

80 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 43 Beginning of Workpapers for: A ctivity : 582 Station Expenses GRID OPERATIONS - SUPERVISING AND OPERATING DISTRIBUTION STATIONS Forecast Method Chosen 212$ () Recorded Forecast Labor Itemized Forecast 17,926 18,229 Non-Labor Itemized Forecast 7,775 7,977 Other N/A Total 25,71 26,26 Description of Activity: Grid Operations - Supervising and Operating Distribution Stations - Includes the cost of labor, materials, and expenses incurred in operating distribution substations and switching stations. Includes labor incurred fo r activities such as: supervising station operation; inspecting station equipment; keeping station logs and records and preparing reports on station operation; and operating switching and other station equipment. Includes related costs such as: transportation expenses; meals, traveling, lodging, and incidental expenses; division overhead; and supply and tool expense. See Appendix C for Final Cost Centers included in this activity.

81 44 W orkpaper - Southern California Edison / 215 GRC - APPLICATION FERC A cco u n t: A c tiv ity : 582 Station Expenses GRID OPERATIONS - SUPERVISING AND OPERATING DISTRIBUTION STATIONS DETERMINATION OF RECORDED/ADJUSTED Recorded Period $ () FERC Form 1 Recorded (Nominal $) Labor 12,361 15,544 17,55 18,993 19,287 N on-labor 5,841 5,447 6,137 6,72 8,398 O ther Total 18,22 2,991 23,642 25,695 27,685 Adjustm ents- (Nominal $) - see Appendix B for additional detail Labor (286) (1,927) (292) (1,97) (1,361) N on-labor (1,117) (1,15) 577 (248) (623) O ther Total (1,43) (2,942) 285 (2,218) (1,984) Recorded/Adjusted (Nominal $) Labor 12,75 13,617 17,213 17,23 17,926 N on-labor 4,724 4,432 6,714 6,454 7,775 O ther Total 16,799 18,49 23,927 23,477 25,71 E sca la tio n : Labor N on-labor O ther Recorded/Adjusted (Constant 212$) Labor N on-labor O ther Total 13,782 15,74 18,419 17,58 17,926 5,183 4,893 7,235 6,611 7,775 o o o o o 18,965 19,967 25,654 24,191 25,71 Recorded Adjusted (212$) 28, , 12, 8, 4, Labor (std escl) Non-Labor (std escl) Other (not escl)

82 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 45 FERC A c c o u n t: A c tiv ity : W itn e s s : S ta tio n E xp e n se s G R ID O P E R A T IO N S - S U P E R V IS IN G A N D O P E R A T IN G D IS T R IB U T IO N S TATIO N S P aul J G rig au x F o re c a s tin g M e th o d s - S u m m a ry o f R e s u lts o f a ll M e th o d s S tu d ie d - 212$ () 2 R e c o rd e d Y e a rs ( ): Results o f Averaging (A2) sd** Chosen _abor 17,753 17,753 17, no ''Jon-Labor 7,193 7,193 7, no Other no Total 24,946 24,946 24,946 n/a n/a 3 R eco rd e d Years (21-212): Results o f Linear Trending (T3) Results o f Averaging (A3) r2* Chosen sd** Chosen _abor 17,482 17,236 16, no 17,975 17,975 17, no 'Jon-Labor 7,747 8,17 8, no 7,27 7,27 7, no Other. no no Total 25,229 25,253 25,276 n/a n/a 25,182 25,182 25,182 n/a n/a 4 R e c o rd e d Y e a rs (29-212): Results o f Linear Trending (T4) Results o f Averaging (A4) r2* Chosen sd** Chosen _abor 19,179 19,951 2, no 17,25 17,25 17,25 1,291 no Sion-Labor 8,634 9,436 1, no 6,628 6,628 6,628 1,84 no Other. no no Total 27,813 29,387 3,96 n/a n/a 23,878 23,878 23,878 n/a n/a 5 R eco rd e d Years (28-212): Results o f Linear Trending (T5) Results o f Averaging (A5) o CM CO r2* Chosen CO o CM sd** Chosen 19,794 2,874 21, no 16,556 16,556 16,556 1,85 no 8,41 9,1 9,79.75 no 6,339 6,339 6,339 1,129 no. no no 28,24 29,974 31,743 n/a n/a 22,895 22,895 22,895 n/a n/a O th e r M e th o d s : Last Recorded Year (LRY) Itemized Forecast (IF) Chosen Chosen _abor 17,926 17,926 17,926 no 18,229 18,229 18,229 yes Sion-Labor 7,775 7,775 7,775 no 7,977 7,977 7,977 yes Other no no Total 25,71 25,71 25,71 n/a 26,26 26,26 26,26 n/a F o re c a s t A d ju s tm e n ts : Base Forecast Method Adjustments*** Method IF 18,229 18,229 18,229 IF 7,977 7,977 7,977 N/A 26,26 26,26 26,26 * r2 = R Squared (Based on recorded years data) ** sd = standard deviation (Based on recorded years data) *** See Appendix B For Additional Detail

83 46 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 582 Station Expenses GRID OPERATIONS - SUPERVISING AND OPERATING DISTRIBUTION STATIONS R esults: F o re ca stin g R esults Labor Non-Labor Other Total Method Selected Itemized Forecast 18,229 18,229 18,229 Itemized Forecast 7,977 7,977 7,977 N/A 26,26 26,26 26,26 A nalysis o f Forecasting Methods Analysis of Linear Trending Method: In D , the CPUC stated that if costs have shown a trend in a certain direction over three or more years, the last year recorded is an appropriate base estimate. The expenses in this sub-account do not show a trend. As described in testimony, the use of an itemized forecast is appropriate because the test year forecast is based on the staffing and coverage levels necessary to operate and monitor the electric grid. Analysis of Averaging Method: In D , the CPUC stated that for those sub-accounts which have significant fluctuations in recorded year expenses from year to year, an average o f recorded expenses is appropriate. The expenses in this sub-account did not show significant fluctuations over the historical period. As described in testimony, the use o f an itemized forecast is appropriate because the forecast is based on the staffing and coverage levels necessary to operate and m onitor the electric grid forecast fo r the test year. Analysis of Last Recorded Year (212): In D , the CPUC stated that if costs have shown a trend in a certain direction over three or more years, the last year recorded is an appropriate base estimate. The expenses in this sub-account do not show a trend. As described in testimony, the use of an itemized forecast is appropriate because the forecast is based on the staffing and coverage levels necessary to operate and monitor the electric grid forecast for the test year. Analysis of Itemized Forecast Method: As described in testimony, the use of an itemized forecast is appropriate because the forecast is based on the staffing and coverage levels necessary to operate and monitor the electric grid over the test year.

84 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 47 A ctivity : 582 Station Expenses GRID OPERATIONS - SUPERVISING AND OPERATING DISTRIBUTION STATIONS R ecorded Period Forecast Expenses (constant 212$) Labor (standard escalation) 13,782 15,74 18,419 17,58 17,926 18,229 18,229 18,229 Non-Labor (standard escalation) 5,183 4,893 7,235 6,611 7,775 7,977 7,977 7,977 Other (not escalatable) Total 18,965 19,967 25,654 24,191 25,71 26,26 26,26 26,26 $( ) Labor Prior year Total 17,926 18,229 18,229 Change 33 Total 17,926 18,229 18,229 18,229 Non-Labor Prior year Total 7,775 7,977 7,977 Chanqe 22 Total 7,775 7,977 7,977 7,977 Other Prior year Total Change Total Total Change Labor 33 Non-Labor 22 Other Total N/A 55

85 48 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 582 Station Expenses GRID OPERATIONS - SUPERVISING AND OPERATING DISTRIBUTION STATIONS T h is p a g e s h o w s th e c h a n g e s in Labor, N o n -L a b o r, a n d O th e r e x p e n d itu re s fo re c a s t d u rin g th ro u g h 2 1 5, in clu d in g re a s o n s fo r th e a d d itio n o f p e rs o n n e l (la b o r), in c re a s e d o ffice s u p p lie s re q u ire d due to an incre ase in activity (non-labor) Labor: 3 3 S ee T estim ony and S upp orting W orkpapers. N on-labor: 22 S ee T estim ony and S upp orting W orkpapers. O th er: N o t a p p lic a b le.

86 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 49 A ctivity : 582 Station Expenses GRID OPERATIONS - SUPERVISING AND OPERATING DISTRIBUTION STATIONS T h is page s h o w s th e c h a n g e s in Labor, N o n -L a b o r, a n d O th e r e x p e n d itu re s fo re c a s t d u rin g th ro u g h 2 15, in clu d in g re a s o n s fo r th e a d d itio n o f p e rs o n n e l (la b o r), in c re a s e d o ffic e s u p p lie s re q u ire d due to an increase in a ctivity (non-labor) Labor: N ot applicable. N on-labor: N ot applicable. O th e r: N ot applicable.

87 5 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 582 Station Expenses GRID OPERATIONS - SUPERVISING AND OPERATING DISTRIBUTION STATIONS T h is page s h o w s th e c h a n g e s in Labor, N o n -L a b o r, a n d O th e r e x p e n d itu re s fo re c a s t d u rin g th ro u g h 2 1 5, in clu d in g re a s o n s fo r th e a d d itio n o f p e rs o n n e l (la b o r), in c re a s e d o ffic e s u p p lie s re q u ire d due to an increase in a ctivity (non-labor) L a bor: N ot applicable. N on-labor: N ot applicable. O th e r: N ot applicable.

88 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 51 FERC A cco u n t: A c tiv ity : 582 Station Expenses GRID OPERATIONS - SUPERVISING AN D OPERATING DISTRIBUTION STATIONS APPENDIX A Detail Description of Final Cost Centers Included in This Activity

89 52 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A c tiv ity : 582 Station Expenses GRID OPERATIONS - SUPERVISING AND OPERATING DISTRIBUTION STATIONS Description of Final Cost Centers included in this activity: * See Appendix C for Summary Final Cost Centers SUMMARY SUMMARY DIRECT CURRENT SYSTEMS Includes the cost o f labor and m aterials used and expenses incurred in maintaining and repairing substation batteries and battery charging equipment. DISTRIBUTION SUBSTATION CIRCUIT BREAKER MAINTENANCE Includes substation m aintenance cost o f labor and m aterials used and expenses incurred in repairing, testing, and overhauling circuit breakers including bushing maintenance (except cleaning and washing). Also includes the cost o f labor, m aterials used, and expenses incurred in testing, calibrating, and inspecting station equipm ent for the purpose of checking its performance including trip testing and ductoring of circuit breakers. Also includes printed revisions and test reports completed by field personnel. SUMMARY DISTRIBUTION SUBSTATION RELAY MAINTENANCE Includes substation m aintenance cost o f labor and m aterials used and expenses incurred in repairing, testing, and overhauling substation relays. Also includes the cost o f labor, materials used, and expenses incurred in testing, calibrating, and inspecting substation relays for the purpose of checking its performance. SUMMARY INSPECTION & MAINTENANCE OF DISTRIBUTION SUBSTATION MISCELLANEOUS EQUIPMENT Includes cost o f labor and m aterials used and expenses incurred in inspecting and maintaining substation equipm ent not specifically provided for in any other final cost center (FCC). Such item s include: cable trench covers; steel and wood pole racks; disconnect switches; relays and other control house equipm ent; auxiliary current transform ers; potential transform ers including bushings; lightning arrestors; potential devices and coupling capacitors; current transform ers including bushings; supervisory and telem etering equipment; insulators; oil line tanks; cooling towers; Direct Current (D.C.) grounds; and mobile units. SUM M ARY OPERATING DISTRIBUTION SUBSTATION EQUIPMENT Includes labor o f operators and expenses incurred in operating substations and substation equipment. SUMMARY POWER CABLE Includes cost of labor and materials used and expenses incurred in inspecting and maintaining substation power cable equipment. SUM M ARY TOOLS Includes payroll, autom otive, and other expenses incurred in ordering, returning, receiving, storing, issuing, repairing, and inventorying tools. Also includes the following: tool inventories; the cost o f tool item s o f small value or short life; material costs in connection w ith tool repair; testing rubber goods; all other expenses directly connected with the accounting and handling of tools; the preparation and inventory of tools on trucks; and debits and/or credits for annual inventory adjustments.

90 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 53 A ctivity : 582 Station Expenses GRID OPERATIONS - SUPERVISING AND OPERATING DISTRIBUTION STATIONS Recorded/Adjusted (Constant 212$ By Final Cost Center $ () * See Appendix C for Summary Final Cost Centers SUMMARY DIRECT CURRENT SYSTEMS SUMMARY SUMMARY SUMMARY SUMMARY DISTRIBUTION SUBSTATION CIRCUIT BREAKER MAINTENANCE DISTRIBUTION SUBSTATION RELAY MAINTENANCE INSPECTION & MAINTENANCE OF DISTRIBUTION SUBSTATION MISCELLANEOUS EQUIPMENT OPERATING DISTRIBUTION SUBSTATION EQUIPMENT 17,584 19,963 25,644 24,181 25,697 SUMMARY POWER CABLE SUMMARY TOOLS 1, Total 18,965 19,963 25,65 24,187 25,71 ** Due to rounding, totals may not tie to other workpaper pages.

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92 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 55 FERC A cco u n t: A c tiv ity : 582 Station Expenses GRID OPERATIONS - SUPERVISING AND OPERATING DISTRIBUTION STATIONS APPENDIX B Detail of Total Company Adjustments to Recorded

93 56 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 582 Station Expenses GRID OPERATIONS - SUPERVISING AND OPERATING DISTRIBUTION STATIONS Detail o f Total C om p any A d ju s tm e n ts to R ecorded E xpenses A d js - (N om inal $)~ $ () Labor (286) (1,927) (292) (1,97) (1,361) Non-Labor (1,117) (1,15) 577 (248) (623) O ther Total (1,43) (2,942) 285 (2,218) (1,984) O rganizational Unit Adjustm ent 1 TDBU-IDP-OU-REMOVED_TRAINING_TOPSIDE This adjustment removes training expenses. Labor Non-Labor 1, O ther Total 2,175 1,387 Organizational Unit Adjustm ent 2 TDBU-IDP-OU-SUBSTATIONACCTADJ This adjustment properly distributes expenses of operation from Transmission activity to Distribution in order to maintain consistency with current efforts to allocate supervision between transmission substations and distribution substations. Labor ,114 Non-Labor O ther Total 99 1,59 1,329 Organizational Unit Adjustm ent 3 TDBU-IDP-OU-REM APP_TO _ This consolidation adjustment re-maps the expenses from activity to Labor 1,314 Non-Labor 388 O ther Total 1,72 Organizational Unit Adjustm ent 4 TDBU-IDP-OU-M OVE_TOPSIDE In 211 only, this adjustment moves the expense for Substation Operators Supervision from FERC 56, 58 and 582 to FERC 562 where the operators were remapped. Labor 1,142 Non-Labor 385 O ther Total 1,527

94 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 57 A ctivity : 582 Station Expenses GRID OPERATIONS - SUPERVISING AND OPERATING DISTRIBUTION STATIONS Detail o f Total C om p any A d ju s tm e n ts to R ecorded E xpenses A d js - (N om inal $) $ () Organizational Unit Adjustm ent 5 TDBU-IDP-OU-O VHD_TO _&M _ 17 This adjustm ent moves 28 labor recorded to overhead in error. Labor for Substation Operation Supervisors records to Transmission FERC 56 (4%) and Distribution FERC 582 (6%). Labor 139 Non-Labor O ther o o o o o o o o o Total 139 Organizational Unit Adjustm ent 6 TDBU-IDP-OU-CBS_TO _DIST This adjustm ent moves distribution circuit breaker (CB) m aintenance charges from FERC 562 and 57 to FERC 582 and 592. The total transfer is estim ated based on the difference between w hat w as charged in 28 and w hat should have been charged in 28. Labor 11 Non-Labor 24 O ther o o o o o o o o o Total 125 Organizational Unit Adjustm ent 7 TDBU-IDP-OU-RELAYROUTINE_TO _ This adjustm ent moves Routine Relay expenses from FERC 592 (592.15) to FERC 582 (582.17) to move final cost centers to the correct activity. Labor 3 Non-Labor 5 O ther o o o o o o o o o Total 35 Organizational Unit Adjustm ent 8 TDBU-IDP-OU-TOOLEXP_TO _D442 This adjustm ent corrects historical data recorded to the distribution cost center D442 set up for tool expense to be consistent with current charging practices. Labor (41) Non-Labor (513) (7) O ther Total (554) (7) Organizational Unit Adjustm ent 9 TDBU-IDP-OU-REM APP_TO _ This consolidation adjustm ent re-m aps the expenses from activity , , , , 59.15, and to Labor (1,247) (2,83) (2,362) (3,778) (2,675) Non-Labor (891) (1,191) (857) (1,354) (1,11) O ther Total (2,138) (3,994) (3,219) (5,132) (3,686)

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96 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 59 FERC A cco u n t: A c tiv ity : 582 Station Expenses GRID OPERATIONS - SUPERVISING AND OPERATING DISTRIBUTION STATIONS APPENDIX C Final Cost Centers Included in This Activity

97 6 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 582 Station Expenses GRID OPERATIONS - SUPERVISING AND OPERATING DISTRIBUTION STATIONS Final Cost Centers included in this activity: Summary Final Cost Centers: DIRECT CURRENT SYSTEMS F F DISTRIBUTION SUBSTATION CIRCUIT BREAKER MAINTENANCE F51553 F51555 DISTRIBUTION SUBSTATION RELAY MAINTENANCE F F F F52754 F F INSPECTION & MAINTENANCE OF DISTRIBUTION SUBSTATION MISCELLANEOUS EQUIPMENT F52562 F F F OPERATING DISTRIBUTION SUBSTATION EQUIPMENT F5395 F5486 F5487 F5489 F549 F5491 F5494 F5498 F5548 F555 F5561 F5565 F5568 F5573 F52713 F52714 F52715 F52325 F F F F F52676 F F52736 F52738 F52742 F52746 F52748 F52752 F52754 F52756 F5276 F52714 F52716 F52718 F52711 F F F F F F F F F52829 F F818 POWER CABLE F52782 F TOOLS F5481 F5554 F52778 F52324

98 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 61 A c tiv ity : 582 Station Expenses GRID OPERATIONS - SUPERVISING AND OPERATING DISTRIBUTION STATIONS Individual Final Cost Centers:

99 62 W orkpaper - Southern California Edison / 215 GRC - APPLICATION End of Workpapers for: A c tiv ity : 582 Station Expenses GRID OPERATIONS - SUPERVISING AND OPERATING DISTRIBUTION STATIONS

100 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 63 Operator Labor Savings Forecast

101 64 W orkpaper - Southern California Edison / 215 GRC - APPLICATION Calculation of Cost Per Operator, based on New Hire Savings A Proposed operator additions 8 B Wrench Time Hours per FTE/yr 1,768 * C Hourly pay for Operators $49 D Potential Hours of O&M OT Relief (# of additions x hrs per employee) 14,144 A*B E Eabor Savings if Overtime converted to Straight Time ($) $347 (C*D)/2 F Eabor Savings if Double Time converted to Straight Time ($) $693 C*D G Avg Eabor Savings ($) $52 (E+F)/2 H 212 Recorded Labor Cost Per Operator $141 I 215 Troubleman Forecast 225 J 215 Labor Costs at $124/Hour $31,725 H*I K Percentage Reduction Based on New Hires 2% G/J L Revised Labor Cost Per Troubleman $139 H-(H*K) * Total time less paid time off, meetings, training, etc.

102 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 65 Beginning of Workpapers for: A ctivity : 573 Maintenance of Miscellaneous Transmission Plant GRID OPERATIONS - TRANSMISSION AND SUBSTATION STORM EXPENSE Forecast Method Chosen 212$ () Recorded Forecast Labor Five Year Average Non-Labor Five Year Average 2,24 1,11 Other N/A Total 2,594 1,536 Description of Activity: Grid Operations - Transmission and Substation Storm Expense - Includes the costs to patrol for and repair storm related dam ages and toxic waste disposal for transmission lines and facilities. Storm damage can be the result of severe w eather conditions such as rain, wind, lightning, and by natural disasters such as earthquakes and forest fires. The storm costs included in this account are: switching, locating and isolating trouble on the system, removal o f debris from lines or equipment, and securing damaged sites until repairs have been completed. Costs for toxic waste disposal include cleaning up hazardous waste dumped on SCE's transmission property and disposal of oil from electrical equipment. Includes related costs such as: transportation expenses; meals, traveling, lodging, and incidental expenses; division overhead; and supply and tool expense. See Appendix C for Final Cost Centers included in this activity.

103 66 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 573 Maintenance of Miscellaneous Transmission Plant GRID OPERATIONS - TRANSMISSION AND SUBSTATION STORM EXPENSE DETERMINATION OF RECORDED/ADJUSTED I Recorded Period $ () FERC Form 1 Recorded (Nominal $) Labor N on-labor 1, ,58 2,395 O ther Total 1,568 1,181 1,29 1,864 2,743 Adjustm ents- (Nominal $) - see Appendix B for additional detail Labor (87) 6 N on-labor (919) (13) (155) O ther Total (919) (19) (149) Recorded/Adjusted (Nominal $) Labor N on-labor ,45 2,24 O ther Total 649 1,181 1,29 1,674 2,594 Escalation: Labor N on-labor O ther Recorded/Adjusted (Constant 212$) Labor N on-labor ,435 2,24 O ther _ Total 716 1,284 1,373 1,713 2,594 2,8 2,4 2, Recorded Adjusted (212$) 1,6 1,2 8 4 i 8 i Labor (std escl) Non-Labor (std escl) Cither (not escl)

104 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 67 A ctivity : 573 Maintenance of Miscellaneous Transmission Plant GRID OPERATIONS - TRANSMISSION AND SUBSTATION STORM EXPENSE Forecasting M ethods - S um m ary o f Results o f all Methods Studied - 212$ () 2 R ecorded Years ( ): Results of Averaging (A2) o CM CO sd** Chosen Labor no Non-Labor 1,838 1,838 1, no Other no Total 2,154 2,154 2,154 n/a n/a 3 R ecorded Years (21-212): Results of Linear Trending (T3) Results of Averaging (A3) r2* Chosen sd** Chosen Labor Non-Labor Other Total 112 (5) (212).58 no no 3,2 3,775 4, no 1,457 1,457 1, no. no no 3,114 3,725 4,335 n/a n/a 1,894 1,894 1,894 n/a n/a 4 Recorded Years (29-212): Results of Linear Trending (T4) Results of Averaging (A4) o CM CO r2* Chosen sd** Chosen Labor Non-Labor Other Total no no 2,571 3,85 3,6.86 no 1,286 1,286 1, no. no no 2,88 3,235 3,663 n/a n/a 1,741 1,741 1,741 n/a n/a 5 R ecorded Years (28-212): Results of Linear Trending (T5) Results of Averaging (A5) 213 o CM ^r 215 r2* Chosen o CM CO ^r o CM o CM ID sd** Chosen Labor Non-Labor Other Total no yes 2,47 2,84 3, no 1,11 1,11 1, yes. no no 2,791 3,211 3,629 n/a n/a 1,536 1,536 1,536 n/a n/a O th er M ethods: Last Recorded Year (LRY) Itemized Forecast (IF) o CM CO Chosen Chosen Labor Non-Labor Other Total no no 2,24 2,24 2,24 no no no no 2,594 2,594 2,594 n/a n/a Forecast A djustm ents: Base Forecast Method Adjustments* Method Labor Non-Labor Other Total A A5 1,11 1,11 1,11 N/A 1,536 1,536 1,536 * r2 = R Squared (Based on recorded years data) ** sd = standard deviation (Based on recorded years data) *** See Appendix B For Additional Detail

105 68 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 573 Maintenance of Miscellaneous Transmission Plant GRID OPERATIONS - TRANSMISSION AND SUBSTATION STORM EXPENSE R esults: F o reca sting R esults Method Selected Labor Five Year Average Non-Labor Five Year Average 1,11 1,11 1,11 Other N/A Total 1,536 1,536 1,536 A nalysis o f Forecasting Methods Analysis of Linear Trending Method: In D , the CPUC stated that if costs have shown a trend in a certain direction over three or more years, the last year recorded is an appropriate base estimate. The costs in this sub-account show fluctuations over the historical period. As described in testimony, the use of a five-year average is more appropriate because costs recorded to this sub-account are storm related and are beyond the control of the utility. Analysis of Averaging Method: In D , the CPUC stated that for those sub-accounts which have significant fluctuations in recorded year expenses from year to year, an average of recorded expenses is appropriate. The costs show fluctuations over the historical period. As described in testimony, the use of a five-year average is more appropriate because costs recorded to this sub-account are storm related and are beyond the control of the utility. Analysis of Last Recorded Year (212): In D , the CPUC stated that if costs have shown a trend in a certain direction over three or more years, the last year recorded is an appropriate base estimate. The costs show fluctuations over the historical period. As described in testimony, the use o f a five-year average is more appropriate because costs recorded to this sub-account are storm related and are beyond the control of the utility. Analysis of Itemized Forecast Method: Not applicable.

106 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 69 A ctivity : 573 Maintenance of Miscellaneous Transmission Plant GRID OPERATIONS - TRANSMISSION AND SUBSTATION STORM EXPENSE Recorded / Forecast $ () 2 8 2,4 2, 1,6 1,2 8 4 I Labor (std escl) Non-Labor (std escl) Cither (not escl) R ecorded Period Forecast Expenses (constant 212$) Labor (standard escalation) Non-Labor (standard escalation) ,435 2,24 1,11 1,11 1,11 Other (not escalatable) Total 716 1,284 1,373 1,713 2,594 1,536 1,536 1,536 $ ( ) Labor Prior year Total Change 72 Total Non-Labor Prior year Total 2,24 1,11 1,11 Chanqe (1.13) Total 2,24 1,11 1,11 1,11 Other Prior year Total Change Total Total Change Labor 72 Non-Labor (1,13) Other Total N/A (1,58)

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108 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 71 A c tiv ity : 573 Maintenance of Miscellaneous Transmission Plant GRID OPERATIONS - TRANSMISSION AND SUBSTATION STORM EXPENSE APPENDIX A Detail Description of Final Cost Centers Included in This Activity

109 72 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A c tiv ity : 573 Maintenance of Miscellaneous Transmission Plant GRID OPERATIONS - TRANSMISSION AND SUBSTATION STORM EXPENSE Description of Final Cost Centers included in this activity: * See Appendix C for Summary Final Cost Centers SUM M ARY TRANSMISSION SUBSTATION STORM Includes payroll, automotive, and other expenses incurred in maintaining and repairing distribution/substation/transm ission equipm ent because o f storm dam age such as wind, rain, sleet, hail, earthquakes, lightning, fire, and other catastrophes. F52574 INSPECTION & MAINTENANCE OF TRANSMISSION SUBSTATION MISCELLANEOUS EQUIPMENT Includes cost o f labor and m aterials used and expenses incurred in inspecting and maintaining substation equipm ent not specifically provided for in any other final cost center (FCC). Such item s include: cable trench covers; steel and wood pole racks; disconnect switches; relays and other control house equipment; auxiliary current transform ers; potential transform ers including bushings; lightning arrestors; potential devices and coupling capacitors; current transform ers including bushings; supervisory and telem etering equipm ent; insulators; oil line tanks; cooling towers; direct current (DC) grounds; and mobile units. F52713 FOUR CORNERS STATION EXPENSES Includes participant share paym ents to the ow ner/operator o f equipm ent or facilities where SCE has an interest.

110 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 73 A ctivity : 573 Maintenance of Miscellaneous Transmission Plant GRID OPERATIONS - TRANSMISSION AND SUBSTATION STORM EXPENSE Recorded/Adjusted (Constant 212$ By Final Cost Center $ () * See Appendix C for Summary Final Cost Centers SUMMARY TRANSMISSION SUBSTATION STORM 712 1,284 1,372 1,71 2,594 F52574 INSPECTION & MAINTENANCE OF TRANSMISSION SUBSTATION MISCELLANEOUS EQUIPMENT F52713 FOUR CORNERS STATION EXPENSES Total 712 1,284 1,372 1,71 2,594 ** Due to rounding, totals may not tie to other workpaper pages.

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112 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 75 A c tiv ity : 573 Maintenance of Miscellaneous Transmission Plant GRID OPERATIONS - TRANSMISSION AND SUBSTATION STORM EXPENSE APPENDIX B Detail of Total Company Adjustments to Recorded

113 76 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 573 Maintenance of Miscellaneous Transmission Plant GRID OPERATIONS - TRANSMISSION AND SUBSTATION STORM EXPENSE Detail o f Total C om pany A d ju s tm e n ts to R ecorded E xpenses A d js - (N om inal $) $ () Labor (87) 6 Non-Labor (919) (13) (155) O ther Total (919) (19) (149) Company W ide Adjustment 1 GRC-JAB-CW -CEMA- FIRESTORM This ratemaking adjustm ent rem oves Firestorm O&M expenses which are recorded and recovered through Catastrophic Event Memorandum Account (CEMA). Labor Non-Labor (916) O ther Total (916) Organizational Unit Adjustm ent 1 TDBU-IDP-OU-REMAPP._TO_ This consolidation adjustment re-maps the expenses from activity , , , , and to Labor Non-Labor (2) O ther Total (2) Organizational Unit Adjustm ent 2 TDBU-IDP-OU-REMAPP._TO_ This consolidation adjustment re-maps the expenses from activity , , , , , , , , , and to Labor Non-Labor (3) O ther Total (3) Organizational Unit Adjustm ent 3 TDBU-IDP-OU-REMOVE_ 211_WINDSTORM This adjustment removes the incremental O&M expenses for the 211 W indstorm event. Labor (87) 6 Non-Labor (11) (155) O ther Total (188) (149)

114 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 77 A c tiv ity : 573 Maintenance of Miscellaneous Transmission Plant GRID OPERATIONS - TRANSMISSION AND SUBSTATION STORM EXPENSE APPENDIX C Final Cost Centers Included in This Activity

115 78 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 573 Maintenance of Miscellaneous Transmission Plant GRID OPERATIONS - TRANSMISSION AND SUBSTATION STORM EXPENSE Final Cost Centers included in this activity: Summary Final Cost Centers: TRANSMISSION SUBSTATION STORM F51569 F51571 F51778 F51785 F51788 F51792 F51799 F5184 F5186 F5188 F51813 F5182 F51822 F51827 F5343 F52525 F52664 F52666 F52667 F52668 F52669 F52671 F52672 F52673 F52674 F52675 F52676 F52677 F52678 F52679 F5268 F52681 F52682 F52683 F52684 F52685 F52686 F52687 F52688 F52689 F5269 F52691 F52692 F52695 F52696 F52697 F52698 F52699 F5261 F52611 F52612 F52613

116 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 79 A c tiv ity : 573 Maintenance of Miscellaneous Transmission Plant GRID OPERATIONS - TRANSMISSION AND SUBSTATION STORM EXPENSE Individual Final Cost Centers: F52574 F52713

117 8 W orkpaper - Southern California Edison / 215 GRC - APPLICATION End of Workpapers for: A ctivity : 573 Maintenance of Miscellaneous Transmission Plant GRID OPERATIONS - TRANSMISSION AND SUBSTATION STORM EXPENSE

118 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 81 Beginning of Workpapers for: A ctivity : 598 Maintenance of Miscellaneous Distribution Plant GRID OPERATIONS - DISTRIBUTION STORM Forecast Method Chosen 212$ () Recorded Forecast Labor Five Year Average 3,58 4,259 Non-Labor Five Year Average 2,9 8,172 Other N/A Total 5,517 12,431 Description of Activity: Grid Operations - Distribution Storm - Includes the costs to patrol fo r and repair storm related dam ages and toxic waste disposal fo r distribution lines and facilities. Storm damage can be the result of severe w eather conditions such as rain, wind, lightning, and by natural disasters such as earthquakes and forest fires. The storm costs included in this account are: switching, locating and isolating trouble on the system, removal of debris from lines or equipment, and securing damaged sites until repairs have been completed. Costs fo r toxic waste disposal include cleaning up hazardous waste dumped on SCE's distribution property and disposal of oil from electrical equipm ent. Includes related costs such as: transportation expenses; meals, traveling, lodging, and incidental expenses; division overhead; and supply and tool expense. See Appendix C for Final Cost Centers included in this activity.

119 82 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 598 Maintenance of Miscellaneous Distribution Plant GRID OPERATIONS - DISTRIBUTION STORM DETERMINATION OF RECORDED/ADJUSTED I Recorded Period $ () FERC Form 1 Recorded (Nominal $) Labor 1,376 3,66 3,35 1,537 3,461 N o n-labor 18,915 5,89 3,5 11,738 2,698 O ther Total 2,291 8,875 6,535 22,275 6,159 Adjustm ents- (Nominal $) - see Appendix B for additional detail Labor 993 (1) (2,361) 47 N on-labor (1,452) 18 (2,474) (689) O ther Total (459) 18 (1) (4,835) (642) Recorded/Adjusted (Nominal $) Labor 2,369 3,66 3,34 8,176 3,58 N on-labor 17,463 5,827 3,5 9,264 2,9 O ther Total 19,832 8,893 6,534 17,44 5,517 E s c a la tio n : Labor N on-labor O ther Recorded/Adjusted (Constant 212$) Labor 2,74 3,394 3,247 8,444 3,58 N o n-labor 19,159 6,433 3,772 9,489 2,9 O ther Total 21,863 9,827 7,19 17,933 5,517 Recorded Adjusted (212$) , 12, 8, 4, Labor (std escl) Non-Labor (std escl) Cither (not escl)

120 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 83 FERC A c c o u n t: A c tiv ity : W itn e s s : M a in te n a n c e o f M iscella n e o u s D istrib u tio n P lant G R ID O P E R A T IO N S - D IS T R IB U T IO N S TO R M P aul J G rig a u x F o re c a s tin g M e th o d s - S u m m a ry o f R e s u lts o f a ll M e th o d s S tu d ie d - 212$ () 2 R e c o rd e d Y e a rs ( ): R esults o f Averaging (A2) o CM CO sd** Chosen _abor 5,976 5,976 5,976 2,468 no ''Jon-Labor 5,749 5,749 5,749 3,74 no Other no Total 11,725 11,725 11,725 n/a n/a 3 R e c o rd e d Y e a rs ( ): Results o f Linear Trending (T3) Results o f Averaging (A3) r2* Chosen sd** Chosen _abor 5,328 5,458 5,589. no 5,66 5,66 5,66 2,391 no 'Jon-Labor 3,327 2,446 1,564.5 no 5,9 5,9 5,9 3,193 no Other. no no Total 8,655 7,94 7,153 n/a n/a 1,156 1,156 1,156 n/a n/a 4 R eco rd e d Years (29-212): Results o f Linear Trending (T4) Results o f Averaging (A4) r2* Chosen sd** Chosen _abor 6,33 6,587 7,141.8 no 4,648 4,648 4,648 2,193 no 'Jon-Labor 3,537 2,782 2,26.9 no 5,425 5,425 5,425 2,825 no Other. no no Total 9,57 9,369 9,167 n/a n/a 1,73 1,73 1,73 n/a n/a 5 R eco rd e d Years (28-212): Results o f Linear Trending (T5) Results o f Averaging (A5) 213 ^r o CM 215 r2* Chosen CO o CM ^r o CM 215 sd** Chosen 6,257 6,922 7,588.2 no 4,259 4,259 4,259 2,11 yes (1,21) (4,325) (7,45).53 no 8,172 8,172 8,172 6,47 yes. no no 5,56 2, n/a n/a 12,431 12,431 12,431 n/a n/a O th e r M e th o d s : Last Recorded Year (LRY) Itemized Forecast (IF) CO o CM Chosen Chosen 3,58 3,58 3,58 no no 2,9 2,9 2,9 no no no no 5,517 5,517 5,517 n/a n/a F o re c a s t A d ju s tm e n ts : Base Forecast Method Adjustments*** Method A5 4,259 4,259 4,259 A5 8,172 8,172 8,172 N/A 12,431 12,431 12,431 * r2 = R Squared (Based on recorded years data) ** sd = standard deviation (Based on recorded years data) *** See Appendix B For Additional Detail

121 84 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 598 Maintenance of Miscellaneous Distribution Plant GRID OPERATIONS - DISTRIBUTION STORM R esults: F o reca sting R esults Method Selected Labor Five Year Average 4,259 4,259 4,259 Non-Labor Five Year Average 8,172 8,172 8,172 Other N/A Total 12,431 12,431 12,431 A nalysis o f Forecasting Methods Analysis of Linear Trending Method: In D , the CPUC stated that if costs have shown a trend in a certain direction overth re e or more years, the last year recorded is an appropriate base estimate. The costs in this sub-account show fluctuations over the historical period. As described in testimony, the use of a five-year average is appropriate because the costs recorded to this sub-account are the result of weather and other acts of nature that are beyond the control of the utility. Analysis of Averaging Method: In D , the CPUC stated that fo r those sub-accounts which have significant fluctuations in recorded year expenses from year to year, an average of recorded expenses is appropriate. The costs in this sub-account show fluctuations over the historical period. As described in testimony, the use of a five-year average is the appropriate forecast method because the costs recorded to this sub-account are the result of weather and other acts of nature that are beyond the control of the utility. Analysis of Last Recorded Year (212): In D , the CPUC stated that if costs have shown a trend in a certain direction over three or more years, the last year recorded is an appropriate base estimate. The costs in this sub-account show fluctuations over the historical period. As described in testimony, the use of a five-year average is the appropriate forecast method because the costs recording to this sub-account are the result of weather and other acts of nature that are beyond the control of the utility. Analysis of Itemized Forecast Method: Not applicable.

122 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 85 A ctivity : 598 Maintenance of Miscellaneous Distribution Plant GRID OPERATIONS - DISTRIBUTION STORM Recorded / Forecast $ () 24, Labor (std escl) Non-Labor (std escl) Other (not escl) R ecorded Period Forecast Expenses (constant 212$) Labor (standard escalation) 2,74 3,394 3,247 8,444 3,58 4,259 4,259 4,259 Non-Labor (standard escalation) 19,159 6,433 3,772 9,489 2,9 8,172 8,172 8,172 Other (not escalatable) Total 21,863 9,827 7,19 17,933 5,517 12,431 12,431 12,431 $ () Labor Prior year Total 3,58 4,259 4,259 Change 751 Total 3,58 4,259 4,259 4,259 Non-Labor Prior year Total 2,9 8,172 8,172 Chanqe 6,163 Total 2,9 8,172 8,172 8,172 Other Prior year Total Change Total Total Change Labor 751 Non-Labor 6,163 Other Total N/A 6,914

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124 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 87 A c tiv ity : 598 Maintenance of Miscellaneous Distribution Plant GRID OPERATIONS - DISTRIBUTION STORM APPENDIX A Detail Description of Final Cost Centers Included in This Activity

125 88 W orkpaper - Southern California Edison / 215 GRC - APPLICATION Activity: 598 Maintenance of Miscellaneous Distribution Plant GRID OPERATIONS - DISTRIBUTION STORM Description of Final Cost Centers included in this activity: * See Appendix C for Summary Final Cost Centers SUMMARY CUSTOMER COMMUNICATIONS ORGANIZATION - STORM EXPENSE Includes payroll, autom otive, and other expenses incurred in m aintaining and repairing distribution/substation/transm ission equipm ent because of storm dam age such as wind, rain, sleet, hail, earthquakes, lightning, fire, and other catastrophes. s u m m a r y DISTRIBUTION STORM Includes payroll, autom otive, and other expenses incurred in m aintaining and repairing distribution/substation/transm ission equipm ent because of storm dam age such as wind, rain, sleet, hail, earthquakes, lightning, fire, and other catastrophes. SUMMARY MISCELLANEOUS SUBSTATION EXPENSE Includes payroll, autom otive, and other general costs and expenses not assignable to other accounts such as: telephone expense, publications and printing services, inspection and repair of office m achines, w ater services, lost tim e resulting from vehicle breakdowns and all other types of motorized equipm ent including private vehicles used in C om pany service, m iscellaneous stationery and office supplies not obtainable from the corporate w are house, interviews or qualification examinations, etc.

126 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 89 A ctivity : 598 Maintenance of Miscellaneous Distribution Plant GRID OPERATIONS - DISTRIBUTION STORM Recorded/Adjusted (Constant 212$ By Final Cost Center $ () * See Appendix C for Summary Final Cost Centers SUMMARY CUSTOMER COMMUNICATIONS ORGANIZATION - STORM EXPENSE SUMMARY DISTRIBUTION STORM 21,68 9,78 6,815 17,683 5,333 SUMMARY MISCELLANEOUS SUBSTATION EXPENSE Total 21,863 9,824 7,18 17,933 5,517 ** Due to rounding, totals may not tie to other workpaper pages.

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128 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 91 A c tiv ity : 598 Maintenance of Miscellaneous Distribution Plant GRID OPERATIONS - DISTRIBUTION STORM APPENDIX B Detail of Total Company Adjustments to Recorded

129 92 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 598 Maintenance of Miscellaneous Distribution Plant GRID OPERATIONS - DISTRIBUTION STORM D etail o f Total C om p any A d ju s tm e n ts to R ecorded Expenses A d js - (N om inal $) $ () Labor 993 (1) (2,361) 47 Non-Labor (1,452) 18 (2,474) (689) Other Total (459) 18 (1) (4,835) (642) Company W ide Adjustment 1 GRC-JAB-CW - CEMA- FIRESTORM This ratemaking adjustm ent rem oves Firestorm O&M expenses w hich are recorded and recovered through Catastrophic Event Memorandum Account (CEMA). Labor Non-Labor (749) O ther Total (749) Organizational Unit Adjustment 1 CSBU-KMM.IDP-OUX-938STORMTOTDBU Customer Service accounting adjustment to appropriately map expenses - This adjustment transfers storm expense from FERC 93 Customer Call Center (CCC) and Phone Bills to Transmission and Distribution FERC 573/598. Labor 186 Non-Labor 39 O ther Total 225 Organizational Unit Adjustment 2 TDBU-IDP-OU-REMAPP._TO_ This consolidation adjustment re-maps the expenses from activity , , , , 59.15, and to Labor (1) Non-Labor 65 O ther Total 65 (1) Organizational Unit Adjustment 3 TDBU-IDP-OU-REMAPP._TO_ This consolidation adjustment re-maps the expenses from activity and to Labor Non-Labor 18 O ther Total 18

130 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 93 A ctivity : 598 Maintenance of Miscellaneous Distribution Plant GRID OPERATIONS - DISTRIBUTION STORM D etail o f Total C om p any A d ju s tm e n ts to R ecorded Expenses A d js - (N om inal $) $ () Organizational Unit Adjustm ent 4 TDBU-IDP-OU-598_STR_TOX_NL_TO _L This adjustment splits labor versus non-labor for consistency with forecast. Labor 87 Non-Labor (87) O ther Total Organizational Unit Adjustm ent 5 TDBU-IDP-OU-REMOVE._211_WINDSTORM This adjustment removes the incremental O&M expenses for the 211 W indstorm event. Labor (2,361) 47 Non-Labor (2,474) (689) O ther Total (4,835) (642)

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132 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 95 A c tiv ity : 598 Maintenance of Miscellaneous Distribution Plant GRID OPERATIONS - DISTRIBUTION STORM APPENDIX C Final Cost Centers Included in This Activity

133 96 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 598 Maintenance of Miscellaneous Distribution Plant GRID OPERATIONS - DISTRIBUTION STORM Final Cost Centers included in this activity: Summary Final Cost Centers: CUSTOMER COMMUNICATIONS ORGANIZATION - STORM EXPENSE F4594 F4596 F462 F F F F F F DISTRIBUTION STORM F5157 F52655 F52656 F5344 F5346 F51656 F52646 F52647 F F F F F52612 F MISCELLANEOUS SUBSTATION EXPENSE F2447 F2449

134 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 97 A c tiv ity : 598 Maintenance of Miscellaneous Distribution Plant GRID OPERATIONS - DISTRIBUTION STORM Individual Final Cost Centers:

135 98 W orkpaper - Southern California Edison / 215 GRC - APPLICATION End of Workpapers for: A ctivity : 598 Maintenance of Miscellaneous Distribution Plant GRID OPERATIONS - DISTRIBUTION STORM

136 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 99 Southern California Edison Company CAPITAL W O RKPAPERS GRC PROJECT DETAIL WORKSHEET: SUBSTATION STORM O rg a n izatio nal U n it S um m ary: T&D T e stim o n y S um m ary: SCE-3, V o lu m e 7 M ajor Pro gra m : GRID OPERATIONS C ategory: S torm D etail: S u b sta tio n S torm D atabase ID: 697 / RO M odel ID: WITNESS Paul Grigaux 2. PROJECT DETAIL Program Group Program Pin # W BS Element 3. PROJECT TYPE STORM SUBSTATION - STORM 3363 CET-PD-ST-SS-SUBSNW Select one Select one X Compliance: Safety, Environmental, Licenses Replacem ents in Kind Upgrades Blanket: FE, Tools, Spare Parts, Lab, Computer Equip Custom er Growth Load Growth Reliability Capitalized Software Various (See Below) 4. ASSET TYPE 5. CLO SE DATE Distribution Substations Specific Blanket 6. RIIM ELIG IBLE Yes 7. COST ESTIMATES (NOMINAL $) Yr SCE $ 215 GRC - Capital Expenditures Forecast Total 1, (a). SYSTEM SHORT TEXT Northwest 7 (b). DETAILED DESCRIPTION 8. SCOPE 9. JUSTIFICATION P. Grigaux

137 1 W orkpaper - Southern California Edison / 215 GRC - APPLICATION Southern California Edison Company CAPITAL W O RKPAPERS GRC PROJECT DETAIL WORKSHEET: TRANSMISSION STORM O rg a n izatio nal U n it S um m ary: T&D T e stim o n y S um m ary: SCE-3, V o lu m e 7 M ajor Pro gra m : GRID OPERATIONS C ategory: S torm D etail: T ra n sm issio n S torm D atabase ID: 698 / RO M odel ID: WITNESS Paul Grigaux 2. PROJECT DETAIL Program Group Program Pin # W BS Element 3. PROJECT TYPE STORM TRANSMISSION - STORM 3367 CET-PD-ST-TS-TREAST Select one Select one X Compliance: Safety, Environmental, Licenses Replacem ents in Kind Upgrades Blanket: FE, Tools, Spare Parts, Lab, Computer Equip Custom er Growth Load Growth Reliability Capitalized Software Various (See Below) 4. ASSET TYPE 5. CLO SE DATE 6. RIIM ELIG IBLE Transmission Lines Specific Blanket Yes 7. COST ESTIMATES (NOMINAL $) Yr SCE $ 213 4,462 5, 214 4,562 4,9 4, ,683 4,7 4, ,76 4,5 4, ,876 4,3 4,2 Total 23, GRC - Capital Expenditures Forecast (a). SYSTEM SHORT TEXT Eastern 7 (b). DETAILED DESCRIPTION 8. SCOPE 9. JUSTIFICATION P. Grigaux

138 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 11 Southern California Edison Company CAPITAL W O RKPAPERS GRC PROJECT DETAIL WORKSHEET: DISTRIBUTION STORM O rg a n izatio nal U n it S um m ary: T&D T e stim o n y S um m ary: SCE-3, V o lu m e 7 M ajor Pro gra m : GRID OPERATIONS C ategory: S torm D etail: D is trib u tio n S torm D atabase ID: 696 / RO M odel ID: WITNESS Paul Grigaux 2. PROJECT DETAIL Program Group Program Pin # W BS Element 3. PROJECT TYPE STORM DISTRIBUTION - STORM 455 CET-PD-ST-DS-CAT Select one Select one X Compliance: Safety, Environmental, Licenses Replacem ents in Kind Upgrades Blanket: FE, Tools, Spare Parts, Lab, Computer Equip Custom er Growth Load Growth Reliability Capitalized Software Various (See Below) 4. ASSET TYPE 5. CLO SE DATE 6. RIIM ELIG IBLE Distribution Lines Specific Blanket Yes 7. COST ESTIMATES (NOMINAL $) Yr SCE $ ,181 46, ,26 45, 44, ,12 43, , , Total 215, GRC - Capital Expenditures Forecast (a). SYSTEM SHORT TEXT Catalina 7 (b). DETAILED DESCRIPTION 8. SCOPE 9. JUSTIFICATION P. Grigaux

139 12 W orkpaper - Southern California Edison / 215 GRC - APPLICATION Beginning of Workpapers for: A ctivity : 583 Overhead Line Expenses GRID OPERATIONS - TROUBLEMEN PATROL, LOCATE, AND REPAIR ACTIVITIES Forecast Method Chosen 212$ () Recorded Forecast Labor Itemized Forecast 22,879 23,847 Non-Labor Itemized Forecast 8,457 8,818 Other N/A Total 31,336 32,665 Description of Activity: Grid Operations - Troublemen Patrol, Locate, and R epair Activities - Includes the costs incurred by troublemen when patrolling distribution lines to locate trouble at the request of SCE's system operators or as the result of a customer reported problem. Activities include: patrolling, switching, locating the cause o f the reported problem, and inspecting SCE equipment installed on customer's property, and repairs to the system to correct reported problem. Includes related costs such as: transportation expenses; meals, traveling, lodging, and incidental expenses; division overhead; and supply and tool expense. See Appendix C for Final Cost Centers included in this activity.

140 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 13 FERC A cco u n t: A c tiv ity : 583 O verhead Line Expenses GRID OPERATIONS - TROUBLEMEN PATROL, LOCATE, AND REPAIR ACTIVITIES P aul J G rig au x DETERMINATION OF RECORDED/ADJUSTED Recorded Period $ () FERC Form 1 Recorded (Nominal $) Labor N on-labor O ther 3,436 2,18 4,2 2,846 2, , ,18 1,997 Total 5,454 6,866 2,823 4,864 7,15 A d justm ents- (N om inal $) - see A ppendix B fo r additional detail Labor N on-labor O ther 12,47 6,966 15,188 8,356 19,93 5,585 16,865 6,87 17,771 6,46 Total 19,436 23,544 24,678 23,735 24,231 Recorded/Adjusted (Nominal $) Labor N on-labor O ther 15,96 8,984 19,28 11,22 21,237 6,264 2,926 7,673 22,879 8,457 Total 24,89 3,41 27,51 28,599 31,336 Escalation: Labor N on-labor O ther Recorded/Adjusted (Constant 212$) Labor N on-labor O ther 18,155 9,856 21,263 12,366 22,725 6,75 21,611 7,859 22,879 8,457 Total 28,11 33,629 29,475 29,47 31,336 Recorded Adjusted (212$) , Labor (std escl) Non-Labor (std escl) Cither (not escl)

141 14 W orkpaper - Southern California Edison / 215 GRC - APPLICATION FER C A c c o u n t: A c tiv ity : W itn e s s : O verh e a d Line E xp e n se s G R ID O P E R A T IO N S - T R O U B L E M E N P A TR O L, L O C A T E, A N D R E P A IR A C T IV IT IE S P aul J G rig au x F o re c a s tin g M e th o d s - S u m m a ry o f R e s u lts o f a ll M e th o d s S tu d ie d - 212$ () 2 R e c o rd e d Y e a rs ( ): Results o f Averaging (A2) sd** Chosen _abor 22,245 22,245 22, no 'Jon-Labor 8,158 8,158 8, no Other no Total 3,43 3,43 3,43 n/a n/a 3 R eco rd e d Years (21-212): Results o f Linear Trending (T3) Results o f Averaging (A3) r2* Chosen sd** Chosen _abor 22,559 22,636 22,713.1 no 22,45 22,45 22, no 'Jon-Labor 9,396 1,249 11,12.97 no 7,689 7,689 7, no Other. no no Total 31,955 32,885 33,815 n/a n/a 3,94 3,94 3,94 n/a n/a 4 R e c o rd e d Y e a rs (29-212): Results o f Linear Trending (T4) Results o f Averaging (A4) r2* Chosen sd** Chosen.abor 23,53 23,426 23, no 22,12 22,12 22, no Mon-Labor 6,23 5,142 4,8.31 no 8,858 8,858 8,858 2,116 no Other. no no Total 29,256 28,568 27,879 n/a n/a 3,978 3,978 3,978 n/a n/a 5 R eco rd e d Years (28-212): Results o f Linear Trending (T5) Results o f Averaging (A5) o CM CO r2* Chosen CO o CM sd** Chosen 24,265 25,245 26, no 21,327 21,327 21,327 1,73 no 6,866 6,135 5,45.29 no 9,58 9,58 9,58 1,934 no. no no 31,131 31,38 31,629 n/a n/a 3,385 3,385 3,385 n/a n/a O th e r M e th o d s : Last Recorded Year (LRY) Itemized Forecast (IF) Chosen Chosen.abor 22,879 22,879 22,879 no 22,97 23,847 23,847 yes Mon-Labor 8,457 8,457 8,457 no 8,471 8,818 8,818 yes Other no no Total 31,336 31,336 31,336 n/a 31,378 32,665 32,665 n/a F o re c a s t A d ju s tm e n ts : Base Forecast Method Adjustments*** Method IF 22,97 23,847 23,847 IF 8,471 8,818 8,818 N/A 31,378 32,665 32,665 * r2 = R Squared (Based on recorded years data) ** sd = standard deviation (Based on recorded years data) *** See Appendix B For Additional Detail

142 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 15 A ctivity : 583 Overhead Line Expenses GRID OPERATIONS - TROUBLEMEN PATROL, LOCATE, AND REPAIR ACTIVITIES R esults: F o re ca stin g R esults Labor Non-Labor Other Total Method Selected Itemized Forecast 22,97 23,847 23,847 Itemized Forecast 8,471 8,818 8,818 N/A 31,378 32,665 32,665 A nalysis o f Forecasting Methods Analysis of Linear Trending Method: In D , the CPUC stated that if costs have shown a trend in a certain direction over three or more years, the last year recorded is an appropriate base estimate. The historical costs do not show a trend. As described in testimony, the use of an itemized forecast based on the level of coverage and staffing required to provide troublemen services to the distribution system is more appropriate. Analysis of Averaging Method: In D , the CPUC stated that fo rth o se sub-accounts which have significant fluctuations in recorded year expenses from year to year, an average o f recorded expenses is appropriate. The costs do not show significant fluctuations. As described in testimony, the use of an itemized forecast based on the level of coverage and staffing required to provide troublemen services to the distribution system is more appropriate. Analysis of Last Recorded Year (212): In D , the CPUC stated that if costs have shown a trend in a certain direction over three or more years, the last year recorded is an appropriate base estimate. The historical costs do not show a trend. As described in testimony, the use of an itemized forecast based on the level of coverage and staffing required to provide troublemen services to the distribution system is more appropriate. Analysis of Itemized Forecast Method: As described in testimony, the expenses in this sub-account are based on the staffing and coverage levels necessary to provide troublemen services to the distribution system. The use of an itemized forecast more accurately reflect expenses necessary to provide troublemen services.

143 16 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 583 Overhead Line Expenses GRID OPERATIONS - TROUBLEMEN PATROL, LOCATE, AND REPAIR ACTIVITIES Recorded / Forecast $ () , Labor (std escl) Non-Labor (std escl) Other (not escl) R ecorded Period Forecast Expenses (constant 212$) Labor (standard escalation) 18,155 21,263 22,725 21,611 22,879 22,97 23,847 23,847 Non-Labor (standard escalation) 9,856 12,366 6,75 7,859 8,457 8,471 8,818 8,818 Other (not escalatable) Total 28,11 33,629 29,475 29,47 31,336 31,378 32,665 32,665 $() Labor Prior year Total 22,879 22,97 23,847 Change Total 22,879 22,97 23,847 23,847 Non-Labor Prior year Total 8,457 8,471 8,818 Chanqe Total 8,457 8,471 8,818 8,818 Other Prior year Total Change Total Total Change Labor Non-Labor Other Total N/A 42 1,287

144 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 17 A ctivity : 583 Overhead Line Expenses GRID OPERATIONS - TROUBLEMEN PATROL, LOCATE, AND REPAIR ACTIVITIES T h is p a g e s h o w s th e c h a n g e s in Labor, N o n -L a b o r, a n d O th e r e x p e n d itu re s fo re c a s t d u rin g th ro u g h 2 1 5, in clu d in g re a s o n s fo r th e a d d itio n o f p e rs o n n e l (la b o r), in c re a s e d o ffice s u p p lie s re q u ire d due to an incre ase in activity (non-labor) La bor: 28 See T estim ony and S upp orting W orkpapers. N on-labor: 14 See T estim ony and S upp orting W orkpapers. O th er: N o t a p p lic a b le.

145 18 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 583 Overhead Line Expenses GRID OPERATIONS - TROUBLEMEN PATROL, LOCATE, AND REPAIR ACTIVITIES T h is page s h o w s th e c h a n g e s in Labor, N o n -L a b o r, a n d O th e r e x p e n d itu re s fo re c a s t d u rin g th ro u g h 2 15, in clu d in g re a s o n s fo r th e a d d itio n o f p e rs o n n e l (la b o r), in c re a s e d o ffice s u p p lie s re q u ire d due to an increase in a ctivity (non-labor) L a bor: 9 4 S ee T estim ony and S upp orting W orkp apers. N on-labor: 347 S ee T estim ony and S upp orting W orkp apers. O th e r: N ot applicable.

146 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 19 A ctivity : 583 Overhead Line Expenses GRID OPERATIONS - TROUBLEMEN PATROL, LOCATE, AND REPAIR ACTIVITIES T h is page s h o w s th e c h a n g e s in Labor, N o n -L a b o r, a n d O th e r e x p e n d itu re s fo re c a s t d u rin g th ro u g h 2 1 5, in clu d in g re a s o n s fo r th e a d d itio n o f p e rs o n n e l (la b o r), in c re a s e d o ffic e s u p p lie s re q u ire d due to an increase in a ctivity (non-labor) L a bor: N ot applicable. N on-labor: N ot applicable. O th e r: N ot applicable.

147 11 W orkpaper - Southern California Edison / 215 GRC - APPLICATION THIS PAGE INTENTIONALLY LEFT BLANK

148 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 111 FERC A cco u n t: A c tiv ity : 583 O verhead Line Expenses GRID OPERATIONS - TROUBLEM EN PATROL, LOCATE, AND REPAIR ACTIVITIES Paul J G rigaux APPENDIX A Detail Description of Final Cost Centers Included in This Activity

149 112 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A c tiv ity : 583 Overhead Line Expenses GRID OPERATIONS - TROUBLEMEN PATROL, LOCATE, AND REPAIR ACTIVITIES Description of Final Cost Centers included in this activity: * See Appendix C for Summary Final Cost Centers SUM M ARY BREAKDOW N M AINTENANCE Includes payroll, autom otive, and other expenses incurred in repairing the distribution system as the result o f a system failure and does not require the replacem ent of a unit o f property. Includes such items as: replacing item s o f material when no units o f property are installed, retired, or replaced; repairing or replacing pavement; replacing blown fuses; and repairing switched, breakers, conduit, cable, services, and capacitors. SUM M ARY BREAKDOW N TRANSFORMER MAINTENANCE Includes payroll, autom otive, and other expenses incurred in repairing overhead and underground transform ers due to a system and failure and does not require the replacem ent o f a unit of property. Includes such item s as: replacing internal burd transform er fuses; replacing leads and bushings on transform ers; transferring transform ers because of crossarm or platform replacem ent when not work order related. SUMMARY CUSTOMER TROUBLE CALLS Includes payroll, autom otive, and other expenses incurred in investigating service related com plaints and requests from customers. Includes such item s as: noisy meters; flickering/partial and/or no-light conditions; servicing m iscellaneous custom er installations when the custom er is not to be charged (includes the handling o f loaned equipment); the search for radio and TV interference; cost of fuses replaced customer's premises; and meter reseals. SUMMARY DISCONNECT/ RECONNECT FOR NON-PAYMENT Includes payroll, autom otive, and other expenses incurred in disconnecting/reconnecting electric services due to nonpaym ent o f bills or noncom pliance with tariff s ch e d u le s. Also includes cost of field collection activities in obtaining paym ent when reconnecting these services and cost of obtaining incidental meter reading. SUMMARY DISTRIBUTION OPERATIONS LINE ACTIVITIES Includes payroll, autom otive, and other expenses incurred when performing the following operations on distribution lines (when no trouble is located and no repairs are made): patrolling, inspecting, switching, sectionalizing, paralleling, etc., for operating purposes not associated with the m aintenance program and not incidental to line construction work. Also includes: setting, reading, and removing meters, voltm eters, and m axim eters; voltage surveys and regulation of circuits other than distribution circuit m aintenance; testing, adjusting, and calibrating am meters, voltmeters, maximeters, and similar instruments. SUM M ARY LINE CLEARING Includes payroll, autom otive, and other expenses incurred in trim m ing and removing trees from existing overhead lines. The cost o f planting species o f trees as replacem ents is also included in this final cost center (FCC). Also includes clearing o f weeds and brush and preventive soil treatm ent. SUMMARY PATROLLING / SWITCHING - TROUBLEMEN Includes payroll, autom otive, and other expenses incurred when performing the following operations on distribution lines (when no trouble is located and no repairs are made): patrolling, inspecting, switching, sectionalizing, paralleling, etc., for operating purposes not associated with the Distribution Inspection and Maintenance Program (DIM P) and not incidental to line construction work. Also includes: setting, reading, and removing am pmeters, voltm eters, and maxim eters; voltage surveys and regulation o f circuits other than distribution circuit maintenance; testing, adjusting, and calibrating am pm eters, voltm eters, maxim eters, and sim ilar instruments; and costs for searching for trouble when unable to locate.

150 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 113 A c tiv ity : 583 Overhead Line Expenses GRID OPERATIONS - TROUBLEMEN PATROL, LOCATE, AND REPAIR ACTIVITIES Description of Final Cost Centers included in this activity: * See Appendix C for Summary Final Cost Centers SUMMARY TELEPHONE REPRESENTATIVE ACTIVITIES Includes payroll, autom otive, and other expenses incurred in handling telephone calls from custom ers and em ployees related to billings, credit applications for service deposits, etc. Also includes after-hour emergencies. SUMMARY TURN-ON / TURN-OFF SERVICE OVERHEAD (OH) Includes payroll, autom otive, and other expenses incurred in routine turning on and turning off electric services. Also includes meter readings incidental to this operation. F MANAGEMENT AND SUPERVISION Includes payroll, autom otive, and other expenses incurred in managing, supervising, or directing activities of the department, division, or district offices.

151 114 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 583 Overhead Line Expenses GRID OPERATIONS - TROUBLEMEN PATROL, LOCATE, AND REPAIR ACTIVITIES Recorded/Adjusted (Constant 212$ By Final Cost Center $ () * See Appendix C for Summary Final Cost Centers SUMMARY BREAKDOWN MAINTENANCE 1,4 12,4 13,512 11,142 1,69 SUMMARY BREAKDOWN TRANSFORMER MAINTENANCE 839 1,454 1,715 SUMMARY CUSTOMER TROUBLE CALLS 11,58 13,429 11,831 11,54 11,585 SUM M ARY DISCONNECT/ RECONNECT FOR NON-PAYMENT SUM M ARY DISTRIBUTION OPERATIONS LINE ACTIVITIES SUMMARY LINE CLEARING SUMMARY PATROLLING / SWITCHING - TROUBLEMEN 5,955 7,565 3,26 5,15 7,14 SUMMARY TELEPHONE REPRESENTATIVE ACTIVITIES SUMMARY TURN-ON / TURN-OFF SERVICE OVERHEAD (OH) F MANAGEMENT AND SUPERVISION Total 28,6 33,62 29,463 29,46 31,336 ** Due to rounding, totals may not tie to other workpaper pages.

152 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 115 A c tiv ity : 583 Overhead Line Expenses GRID OPERATIONS - TROUBLEM EN PATROL, LOCATE, AND REPAIR ACTIVITIES APPENDIX B Detail of Total Company Adjustments to Recorded

153 116 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 583 Overhead Line Expenses GRID OPERATIONS - TROUBLEMEN PATROL, LOCATE, AND REPAIR ACTIVITIES D etail o f Total C om p any A d ju s tm e n ts to R ecorded Expenses A d js - (N om inal $) $ () Labor 12,47 15,188 19,93 16,865 17,771 Non-Labor 6,966 8,356 5,585 6,87 6,46 O ther Total 19,436 23,544 24,678 23,735 24,231 Organizational Unit Adjustm ent 1 TDBU-IDP-OU-REMAPP_TO_ cn CO -v] o This consolidation adjustm ent re-m aps the expenses from activity , , , , and to Labor 12,47 15,188 19,93 16,865 17,771 Non-Labor 6,966 8,356 5,585 6,87 6,46 O ther Total 19,436 23,544 24,678 23,735 24,231 o o o

154 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 117 FERC A cco u n t: A c tiv ity : 583 O verhead Line Expenses GRID OPERATIONS - TROUBLEM EN PATROL, LOCATE, AND REPAIR ACTIVITIES APPENDIX C Final Cost Centers Included in This Activity

155 118 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 583 Overhead Line Expenses GRID OPERATIONS - TROUBLEMEN PATROL, LOCATE, AND REPAIR ACTIVITIES Final Cost Centers included in this activity: Summary Final Cost Centers: BREAKDOW N MAINTENANCE F5428 F5432 F544 F5448 F5452 F5511 F5518 F5519 F5526 F5527 F52553 F52336 F52337 F52338 F52339 F52345 F52346 F52347 F52348 F52349 F52355 F52356 F52357 F52358 F52359 F546 F547 F5471 F548 F557 F5534 F5535 F5539 F52551 F52552 F5234 F52341 F52342 F52343 F52344 F5235 F52351 F52352 F52353 F52354 F5236 F52361 F52362 F52363 F52364 F52365 F52366 F52367 F BREAKDOWN TRANSFORMER MAINTENANCE F52384 F52385 F52386 F52387 F52388 F52394 F52395 F52396 F52397 F52398 F52389 F52399 F5239 F52391 F52392 F52393 CUSTOMER TROUBLE CALLS F5424 F5426 F5429 F5441 F5445 F551 F5515 F552 F5529 F5538 F52339 F5234 F52341 F52342 F52343 F52349 F5235 F52351 F52352 F52353 F F F F F52285 F F F F F52286 F5451 F5453 F5467 F5475 F55 F52558 F F52336 F52337 F52338 F52344 F52345 F52346 F52347 F52348 F52354 F52355 F5279 F52711 F F F F F F F F F F F52299 F F F F F DISCONNECT/ RECONNECT FOR NON-PAYMENT F F F F F F F F F F DISTRIBUTION OPERATIONS LINE ACTIVITIES F52198 F52199 F522 F5221 F5222 F5229 F5221 F52211 F52212 F52213 F52221 F52222 F52223 F52224 F52225 F F F F F52292 F F5223 F5224 F5225 F5226 F5227 F52214 F52215 F52216 F52217 F52219 F52226 F52227 F52228 F52229 F52231 F52232 F52235 F52238 F52242 F52244 F52245 F52246 LINE CLEARING F52368 F52369 F5237 F52371 F52372 F52373 F52374 F52375 F52376 F52377 F52378 F52379 F5238 F52381 F52382 F52383 F PATROLLING / SWITCHING - TROUBLEMEN F5423 F543 F5434 F5439 F5442 F5476 F551 F554 F558 F5513 F5536 F52585 F F5222 F52234 F52247 F52248 F52249 F5225 F F F F52282 F F F5446 F545 F5456 F5463 F5466 F5516 F5522 F5523 F553 F5533 F52236 F52237 F52239 F5224 F52241 F F F F F F F F F F522827

156 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 119 FERC A cco u n t: A c tiv ity : 583 O verhead Line Expenses GRID OPERATIONS - TROUBLEM EN PATROL, LOCATE, AN D REPAIR ACTIVITIES Final Cost Centers included in this activity: Summary Final Cost Centers: F F F F52298 F F F F F TELEPHONE REPRESENTATIVE ACTIVITIES F F F52288 F F F F F F F F F F52289 F F F F TURN-ON / TURN-OFF SERVICE OVERHEAD (OH) F F F F F F F52295 F F F F F F F F F522953

157 12 W orkpaper - Southern California Edison / 215 GRC - APPLICATION Activity: 583 Overhead Line Expenses GRID OPERATIONS - TROUBLEMEN PATROL, LOCATE, AND REPAIR ACTIVITIES Individual Final Cost Centers: F522757

158 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 121 End of Workpapers for: A c tiv ity : 583 Overhead Line Expenses GRID OPERATIONS - TROUBLEM EN PATROL, LOCATE, AND REPAIR ACTIVITIES

159 122 W orkpaper - Southern California Edison / 215 GRC - APPLICATION THIS PAGE INTENTIONALLY LEFT BLANK

160 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 123 Troubleman Labor Savings Forecast

161 124 W orkpaper - Southern California Edison / 215 GRC - APPLICATION Calculation of Cost Per Troubleman, based on New Hire Savings A Proposed troubleman additions 18 B Wrench Time Hours per FTE/yr 1,768 * C Hourly pay for Troublemen $54 D Potential Hours of O&M OT Relief (# of additions x hrs per employee) 31,824 A*B E Eabor Savings if Overtime converted to Straight Time ($) $851 (C*D)/2 F Eabor Savings if Double Time converted to Straight Time ($) $1,73 C*D G Avg Eabor Savings ($) $1,277 (E+F)/2 H 212 Recorded Labor Cost Per Troubleman $124 I 215 Troubleman Forecast 23 J 215 Labor Costs at $124/Hour $25,172 H*I K Percentage Reduction Based on New Hires 5% G/J L Revised Labor Cost Per Troubleman $117 H-(H*K) * Total time less paid time off, meetings, training, etc.

162 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 125 Beginning of Workpapers for: A ctivity : 585 Street Lighting and Signal System Expenses GRID OPERATIONS - STREET LIGHT OPERATIONS AND MAINTENANCE Forecast Method Chosen 212$ () Recorded Forecast Labor Itemized Forecast 4,43 4,281 Non-Labor Itemized Forecast 4,15 4,482 Other N/A Total 8,535 8,763 Description of Activity: Grid Operations - Street Light Operations and Maintenance - Includes the cost of labor, materials used and expenses incurred in: the operation of street lighting and signal system equipment. Labor costs include activities for: supervising street lighting and signal systems operation; replacing lamps and incidental cleaning of glassware and fixtures; routine patrolling for lamp outages, extraneous nuisances or encroachments; testing lines and equipment; maintenance of street lighting and signal system assets; and streetlight mapping. Includes related costs such as: transportation expenses; meals, traveling, lodging, and incidental expenses; division overhead; and supply and tool expense. See Appendix C for Final Cost Centers included in this activity.

163 126 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 585 Street Lighting and Signal System Expenses GRID OPERATIONS - STREET LIGHT OPERATIONS AND MAINTENANCE DETERMINATION OF RECORDED/ADJUSTED I Recorded Period $ () FERC Form 1 Recorded (Nominal $) Labor N on-labor O ther Total Adjustm ents- (Nominal $) - see Appendix B for additional detail Labor 3,72 4,268 4,195 3,827 4,419 N on-labor 4,245 5,218 3,551 3,431 3,56 O ther Total 7,947 9,486 7,746 7,258 7,979 Recorded/Adjusted (Nominal $) Labor 3,858 4,39 4,21 3,846 4,43 N on-labor 4,818 5,27 4,16 4,29 4,15 O ther Total 8,676 9,579 8,226 7,875 8,535 Escalation: Labor N on-labor O ther Recorded/Adjusted (Constant 212$) Labor 4,44 4,77 4,55 3,972 4,43 N on-labor 5,286 5,818 4,328 4,127 4,15 O ther Total 9,69 1,588 8,833 8,99 8,535 12, Recorded Adjusted (212$) 1, 8, 6, 4. I Labor (std escl) Non-Labor (std escl) Other (not escl)

164 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 127 FERC A c c o u n t: A c tiv ity : W itn e s s : 585 S treet Lighting and Signal System Expenses G R ID O P E R A T IO N S - S T R E E T L IG H T O P E R A T IO N S A N D M A IN T E N A N C E Paul J G rig a u x F o re c a s tin g M e th o d s - S u m m a ry o f R e s u lts o f a ll M e th o d s S tu d ie d - 212$ () 2 R e c o rd e d Y e a rs ( ): Results o f Averaging (A2) o CM CO sd** Chosen _abor 4,21 4,21 4, no ''Jon-Labor 4,116 4,116 4, no Other no Total 8,317 8,317 8,317 n/a n/a 3 R e c o rd e d Y e a rs ( ): Results o f Linear Trending (T3) Results o f Averaging (A3) r2* Chosen sd** Chosen _abor 4,227 4,19 4, no 4,32 4,32 4, no 'Jon-Labor 3,964 3,852 3, no 4,186 4,186 4,186 1 no Other. no no Total 8,191 8,42 7,893 n/a n/a 8,488 8,488 8,488 n/a n/a 4 R eco rd e d Years (29-212): Results o f Linear Trending (T4) Results o f Averaging (A4) r2* Chosen sd** Chosen _abor 4,31 3,876 3,72.36 no 4,419 4,419 4, no Sion-Labor 3,259 2,726 2,192.7 no 4,594 4,594 4, no Other. no no Total 7,29 6,62 5,912 n/a n/a 9,13 9,13 9,13 n/a n/a 5 R e c o rd e d Y e a rs ( ): Results o f Linear Trending (T5) Results o f Averaging (A5) 213 ''tf o CM 215 r2* Chosen 213 ''tf o CM 215 sd** Chosen 4,193 4,118 4,43.17 no 4,416 4,416 4, no 3,517 3,111 2,76.68 no 4,733 4,733 4, no. no no 7,71 7,229 6,749 n/a n/a 9,149 9,149 9,149 n/a n/a O th e r M e th o d s : Last Recorded Year (LRY) Itemized Forecast (IF) Chosen Chosen _abor 4,43 4,43 4,43 no 4,192 4,215 4,281 yes Sion-Labor 4,15 4,15 4,15 no 4,38 4,46 4,482 yes Other no no Total 8,535 8,535 8,535 n/a 8,572 8,621 8,763 n/a F o re c a s t A d ju s tm e n ts : Base Forecast Method Adjustments*** Method IF 4,192 4,215 4,281 IF 4,38 4,46 4,482 N/A 8,572 8,621 8,763 * r2 = R Squared (Based on recorded years data) ** sd = standard deviation (Based on recorded years data) *** See Appendix B For Additional Detail

165 128 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 585 Street Lighting and Signal System Expenses GRID OPERATIONS - STREET LIGHT OPERATIONS AND MAINTENANCE R esults: F o reca sting R esults Method Selected Labor Itemized Forecast 4,192 4,215 4,281 Non-Labor Itemized Forecast 4,38 4,46 4,482 Other N/A Total 8,572 8,621 8,763 A nalysis o f Forecasting Methods Analysis of Linear Trending Method: In D , the CPUC stated that if costs have shown a trend in a certain direction over three or more years, the last year recorded is an appropriate base estimate. Labor expenses do not show a trend while non-labor expenses show a four-year trend. The use of an itemized forecast is more indicative of the work that will be preformed. As discussed in testimony, expenses for this sub-account are forecast using an itemized forecast methodology which takes into account the volume of work required in the test year. Analysis of Averaging Method: In D , the CPUC stated that for those sub-accounts which have significant fluctuations in recorded year expenses from year to year, an average of recorded expenses is appropriate. The expenses in this sub-account did not show significant fluctuations over the historical period. Use of an itemized forecast is more appropriate as it accounts for the volume of work forecast for the test year. Analysis of Last Recorded Year (212): In D , the CPUC stated that if costs have shown a trend in a certain direction over three or more years, the last year recorded is an appropriate base estimate. Labor expenses do not show a trend while non-labor expenses show a four- year trend. The use of an itemized forecast is more indicative of the work that will be preformed. As discussed in testimony, expenses for this sub-account are forecast using an itemized forecast methodology which takes into account the volume of work required in the test year. Analysis of Itemized Forecast Method: As described in testimony, the forecast expenses for this sub-account are based on the forecast level of streetlight maintenance and inspection work necessary for the test year. This level of work is appropriately forecast using the itemized forecast methodology which incorporates the specific level of work planned for the test year.

166 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 129 A ctivity : 585 Street Lighting and Signal System Expenses GRID OPERATIONS - STREET LIGHT OPERATIONS AND MAINTENANCE Recorded / Forecast $ () 12, 1, 8, 6, I 1 I Labor (std escl) Non-Labor (std escl) Cither (not escl) I R ecorded P eriod Forecast Expenses (constant 212$) Labor (standard escalation) 4,44 4,77 4,55 3,972 4,43 4,192 4,215 4,281 Non-Labor (standard escalation) 5,286 5,818 4,328 4,127 4,15 4,38 4,46 4,482 Other (not escalatable) Total 9,69 1,588 8,833 8,99 8,535 8,572 8,621 8,763 $() Labor Prior year Total 4,43 4,192 4,215 Change (238) Total 4,43 4,192 4,215 4,281 Non-Labor Prior year Total 4,15 4,38 4,46 Change Total 4,15 4,38 4,46 4,482 Other Prior year Total Change Total Total Change Labor (238) Non-Labor Other Total N/A

167 13 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 585 Street Lighting and Signal System Expenses GRID OPERATIONS - STREET LIGHT OPERATIONS AND MAINTENANCE T h is p a g e s h o w s th e c h a n g e s in L a bor, N o n -L a b o r, a n d O th e r e x p e n d itu re s fo re c a s t d u rin g th ro u g h 2 1 5, in clu d in g re a s o n s fo r th e a d d itio n o f p e rs o n n e l (la b o r), in c re a s e d o ffice s u p p lie s re q u ire d due to an increase in a ctivity (non-labor) L a bor: (2 3 8 ) See T estim ony and S upp orting W orkpapers. N on-labor: 275 See T estim ony and S upp orting W orkpapers. O th e r: N ot applicable.

168 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 131 A ctivity : 585 Street Lighting and Signal System Expenses GRID OPERATIONS - STREET LIGHT OPERATIONS AND MAINTENANCE T h is p a g e s h o w s th e c h a n g e s in L a bor, N o n -L a b o r, a n d O th e r e x p e n d itu re s fo re c a s t d u rin g th ro u g h 2 1 5, in clu d in g re a s o n s fo r th e a d d itio n o f p e rs o n n e l (la b o r), in c re a s e d o ffice s u p p lie s re q u ire d du e to an in c re a s e in a c tiv ity (n o n -la b o r) L a bor: 23 See T estim ony and S upporting W orkpapers. N on-labor: 26 See T estim ony and S upporting W orkpapers. O th e r: N ot applicable.

169 132 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 585 Street Lighting and Signal System Expenses GRID OPERATIONS - STREET LIGHT OPERATIONS AND MAINTENANCE T h is p a g e s h o w s th e c h a n g e s in L a bor, N o n -L a b o r, a n d O th e r e x p e n d itu re s fo re c a s t d u rin g th ro u g h 2 1 5, in c lu d in g re a s o n s fo r th e a d d itio n o f p e rs o n n e l (la b o r), in c re a s e d o ffice s u p p lie s re q u ire d due to an incre ase in activity (non-labor) Labor: 66 See T estim ony and S upporting W orkpapers. N on-labor: 76 See T estim ony and S upporting W orkpapers. O th er: N o t a p p lic a b le.

170 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 133 A c tiv ity : 585 Street Lighting and Signal System Expenses GRID OPERATIONS - STREET LIGHT OPERATIONS AND MAINTENANCE APPENDIX A Detail Description of Final Cost Centers Included in This Activity

171 134 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A c tiv ity : 585 Street Lighting and Signal System Expenses GRID OPERATIONS - STREET LIGHT OPERATIONS AND MAINTENANCE Description of Final Cost Centers included in this activity: * See Appendix C for Summary Final Cost Centers SUMMARY STREET LIGHT ADMINISTRATION & BILLING Includes payroll, automotive, and other expenses incurred by the streetlighting management, supervision, billing, and m apping groups. Includes such activities as: preparation and/or processing o f docum ents and the m aintenance of related files in the streetlight accounting group; creating and updating maps showing the location o f street-lights; and creation and m aintenance of database with ownership and billing responsibility for streetlights. SUMMARY STREET LIGHT MAINTENANCE Includes payroll, automotive, and other expenses incurred in repairing, transferring, replacing, and rearranging street light system s. Includes such item s as: painting street light electroliers and fixtures; repairing or replacing cables or conductors; repairing brackets, mast arms, fixtures, regulators, controls, switches, and tim e clocks; replacing parts o f fixtures; replacing fuses in street light transform ers; replacing individual burned-out lamps incidental to repairs; locating and correcting street lighting circuit trouble; repairing street light transform ers; adjusting street light transform ers and adding, filtering, or replacing oil; patching cable sheath; replacing cable terminals; replacing tags on cables; and transferring or relocating street light transformers. SUMMARY STREET LIGHT MAINTENANCE DESIGN CONSTRUCT MAINTAIN (DCM) Includes payroll, automotive, and other expenses incurred in repairing, transferring, replacing, and rearranging street light system s. Includes such item s as: painting street light electroliers and fixtures; repairing or replacing cables or conductors; repairing brackets, mast arms, fixtures, regulators, controls, switches, and tim e clocks; replacing parts o f fixtures; replacing fuses in street light transform ers; replacing individual burned-out lamps incidental to repairs; locating and correcting street lighting circuit trouble; repairing street light transform ers; adjusting street light transform ers and adding, filtering, or replacing oil; patching cable sheath; replacing cable terminals; replacing tags on cables; and transferring or relocating street light transformers. SUMMARY STREET LIGHT OPERATIONS / PATROLS Includes payroll, automotive, and other expenses incurred when performing the following operations (no trouble located) on Com pany-owned street light system s: patrolling, inspecting, group relamping, switching, and testing to determ ine operating efficiency and perform ance. Also includes the following when performed on custom er-owned street light system s covered by schedules LS-2 and LS-3, Special Condition 5, and O ptional Relamp Service: replacing lamps and incidental cleaning o f glassware and fixtures; routine patrolling; and testing lines and equipm ent. F STAND-BY TIME Includes labor incurred when em ployees are held at the end o f their regularly schedule shift in anticipation of em ergency or unplanned work. Also includes labor incurred when em ployees are unable to work due to inclement weather.

172 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 135 A ctivity : 585 Street Lighting and Signal System Expenses GRID OPERATIONS - STREET LIGHT OPERATIONS AND MAINTENANCE Recorded/Adjusted (Constant 212$ By Final Cost Center $ () * See Appendix C for Summary Final Cost Centers SUMMARY STREET LIGHT ADMINISTRATION & BILLING 1,319 1,943 1,563 1,58 1,61 SUMMARY STREET LIGHT MAINTENANCE 5,411 5,135 3,752 3,963 4,24 SUMMARY STREET LIGHT MAINTENANCE DESIGN CONSTRUCT MAINTAIN (DCM) 2,15 2,916 2,998 1,994 2,129 SUMMARY STREET LIGHT OPERATIONS / PATROLS F STAND-BY TIME Total 9,687 1,584 8,83 8,96 8,535 ** Due to rounding, totals may not tie to other workpaper pages.

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174 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 137 A c tiv ity : 585 Street Lighting and Signal System Expenses GRID OPERATIONS - STREET LIGHT OPERATIONS AND MAINTENANCE APPENDIX B Detail of Total Company Adjustments to Recorded

175 138 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 585 Street Lighting and Signal System Expenses GRID OPERATIONS - STREET LIGHT OPERATIONS AND MAINTENANCE Detail o f Total C om p any A d ju s tm e n ts to R ecorded E xpenses A d js - (N om inal $) $ () Labor 3,72 4,268 4,195 3,827 4,419 Non-Labor 4,245 5,218 3,551 3,431 3,56 Other Total 7,947 9,486 7,746 7,258 7,979 Organizational Unit Adjustment 1 TDBU-IDP-OU-REMAPP_TO_ cn pi -v] o This consolidation adjustment re-maps the expenses from activity , , and to Labor 3,72 4,268 4,195 3,827 4,419 Non-Labor 4,245 4,776 3,551 3,431 3,56 Other Total 7,947 9,44 7,746 7,258 7,979 Organizational Unit Adjustment 2 TDBU-IDP-OU-OTA..VENDOR. CO I CO o This adjustment corrects the accounting for the Street Light Patrols' vendor from FERC 596 to FERC 585. Labor Non-Labor 442 Other Total 442

176 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 139 A c tiv ity : 585 Street Lighting and Signal System Expenses GRID OPERATIONS - STREET LIGHT OPERATIONS AND MAINTENANCE APPENDIX C Final Cost Centers Included in This Activity

177 14 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 585 Street Lighting and Signal System Expenses GRID OPERATIONS - STREET LIGHT OPERATIONS AND MAINTENANCE Final Cost Centers included in this activity: Summary Final Cost Centers: STREET LIGHT ADMINISTRATION & BILLING F51954 F5196 F52466 F52697 F F STREET LIGHT MAINTENANCE F51955 F51957 F51959 F51961 F5257 F52559 F52815 F F F52469 F5247 F52471 F F F F52274 F F F52468 F F F STREET LIGHT MAINTENANCE DESIGN CONSTRUCT MAINTAIN (DCM) F52645 F52317 F52318 F F STREET LIGHT OPERATIONS / PATROLS F51962 F51963 F51964 F51965 F52591 F F F F525338

178 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 141 Activity: 585 Street Lighting and Signal System Expenses GRID OPERATIONS - STREET LIGHT OPERATIONS AND MAINTENANCE Individual Final Cost Centers: F523349

179 142 W orkpaper - Southern California Edison / 215 GRC - APPLICATION End of Workpapers for: A ctivity : 585 Street Lighting and Signal System Expenses GRID OPERATIONS - STREET LIGHT OPERATIONS AND MAINTENANCE

180 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 143 Southern California Edison Company CAPITAL W O RKPAPERS GRC PROJECT DETAIL WORKSHEET: STREETLIGHTS O rg a n izatio nal U n it S um m ary: T&D T e stim o n y S um m ary: SCE-3, V o lu m e 7 M ajor Program : GRID OPERATIONS Category: S treetlights Detail: S treetlights D atabase ID: 688 / RO M odel ID: WITNESS Paul Grigaux 2. PROJECT DETAIL Program Group Program Pin # W BS Element 3. PROJECT TYPE OTHER - TDBU STREETLIGHTS 458 CET-PD-OT-SL-CAT Select one Select one X Compliance: Safety, Environmental, Licenses Replacem ents in Kind Upgrades Blanket: FE, Tools, Spare Parts, Lab, Computer Equip Custom er Growth Load Growth Reliability Capitalized Software Various (See Below) 4. ASSET TYPE 5. CLO SE DATE 6. RIIM ELIG IBLE Distribution Lines Specific Blanket No 7. COST ESTIMATES (NOMINAL $) Yr SCE $ , , , , ,723 Total 253,174 2, 1, 215 GRC - Capital Expenditures Forecast (a). SYSTEM SHORT TEXT Catalina 7 (b). DETAILED DESCRIPTION 8. SCOPE 9. JUSTIFICATION P. Grigaux

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182 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 145 Steel Pole Replacement Unit Cost

183 146 W orkpaper - Southern California Edison / 215 GRC - APPLICATION Historical Steel Pole Replacement Costs Row Labels SAP Total Non-Budget Net SAP Sum of Installation SAP Cost per Pole TD51315 $24,63.59 $2, $184, ,584 TD $271,56.32 $25, $245, ,854 TD $278,493.9 $33, $245, ,429 TD $291, $14,98.9 $276, ,594 TD $35, $14, $29, ,68 TD $264, $1, $254, ,647 TD $318, $16, $32, ,168 TD51319 $35, $15, $29, ,315 TD $257,244.9 $12, $244, ,434 TD $268, $11, $256, ,831 TD $336,29.33 $16, $319, ,262 TD $274, $13,52.17 $261, ,22 TD5132 $336,29.15 $17,341.2 $318, ,639 TD51326 $321, $16,568.2 $35, ,16 TD51327 $329,483.8 $15,75.9 $314, ,55 TD51328 $276,27.4 $14,46.75 $261, ,818 TD $248, $11, $236, ,227 TD $292,2.77 $16, $275, ,267 TD $256, $11, $245, ,283 TD $141,446.3 $8,12.12 $133, ,666 TD $196, $11,332.8 $185, ,784 TD $194, $7, $186, ,66 TD $23,93.74 $25, $24, ,27 TD59739 $235, $13, $221, ,683 TD $252,27.33 $11,42.72 $24, ,689 TD $296, $12, $284, ,685 TD63337 $212, $9,26.4 $23, ,156 TD63515 $276,19.3 $11, $264, ,292 TD $291, $11,963.5 $279, ,5 Grand Total $7,765,79.7 $432, $7,332, ,177 $6,23

184 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 147 Luminaire Replacement Unit Cost

185 148 W orkpaper - Southern California Edison / 215 GRC - APPLICATION Work paper Title: LUMINAIRE UNIT COSTS WBS Element: CET-PT-OT-SL-LU Testimony Reference SCE-3, Volume 7 Witness: Grigaux Table 1: Recorded Costs and Units - Closed Work Orders Only CLOSED WORK ORDERS a = Units, closed work orders 1,541 21,58 11,687 27,54 18,94 b Recorded cost (nom inal, xooo) 56 6,51 2,968 6,942 5,53 c =b/a Average cost/unit (nom inal, xooo) d 212$ Escalation Factors e =c*d A verage cost/unit (212$, xooo) Unit cost used for forecasting $3

186 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 149 Beginning of Workpapers for: A ctivity : 588 Miscellaneous Distribution Expenses GRID OPERATIONS - MISCELLANEOUS OPERATING EXPENSES Forecast Method Chosen 212$ () Recorded Forecast Labor Itemized Forecast 3,423 1,995 Non-Labor Itemized Forecast 1,13 74 Other N/A Total 4,553 2,699 Description of Activity: Grid Operations - Miscellaneous Operating Expenses - Includes the costs to create and maintain circuit maps and to perform outage data management fo r reporting to the CPUC pursuant to D Includes related costs such as: transportation expenses; meals, traveling, lodging, and incidental expenses; division overhead; and supply and tool expense. See Appendix C for Final Cost Centers included in this activity.

187 15 W orkpaper - Southern California Edison / 215 GRC - APPLICATION FERC A c c o u n t: A c tiv ity : W itn e s s : 588 Miscellaneous Distribution Expenses G R ID O P E R A T IO N S - M IS C E L L A N E O U S O P E R A T IN G E X P E N S E S DETERMINATION OF RECORDED/ADJUSTED I Recorded Period $ () FERC Form 1 Recorded (Nominal $) Labor 2,868 3,616 3,836 3,272 3,423 N on-labor 1,3 2, ,13 O ther Total 4,168 5,674 4,731 4,193 4,553 Adjustm ents- (Nominal $) - see Appendix B for additional detail Labor (18) N on-labor O ther Total (18) Recorded/Adjusted (Nominal $) Labor 2,868 3,598 3,836 3,272 3,423 N on-labor 1,3 2, ,13 O ther Total 4,168 5,656 4,731 4,193 4,553 Escalation: Labor N on-labor O ther Recorded/Adjusted (Constant 212$) Labor Non-Labor Other Total ,7 3,983 2,272 6, , ,322 3, ,553 Recorded Adjusted (212$) , Labor (std escl) I Non-Labor (std escl) Other (not escl)

188 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 151 A ctivity : 588 Miscellaneous Distribution Expenses GRID OPERATIONS - MISCELLANEOUS OPERATING EXPENSES Forecasting M ethods - Sum m ary o f Results o f all M ethods Studied -212$ () 2 R ecorded Years ( ): o CM CO Results of Averaging (A2) sd** Chosen _abor 3,41 3,41 3,41 22 no ''Jon-Labor 1,37 1,37 1,37 93 no Other no Total 4,438 4,438 4,438 n/a n/a 3 R ecorded Years (21-212): Results of Linear Trending (T3) Results of Averaging (A3) r2* Chosen sd** Chosen _abor 2,954 2,613 2,272.7 no 3,636 3,636 3, no 'Jon-Labor 1,178 1,261 1, no 1,13 1,13 1,13 83 no Other. no no Total 4,132 3,874 3,616 n/a n/a 4,649 4,649 4,649 n/a n/a 4 R ecorded Years (29-212): Results of Linear Trending (T4) Results of Averaging (A4) r2* Chosen sd** Chosen _abor 3,121 2,88 2,64.69 no 3,722 3,722 3, no 'Jon-Labor (224).49 no 1,327 1,327 1, no Other. no no Total 3,587 3,1 2,416 n/a n/a 5,49 5,49 5,49 n/a n/a 5 R ecorded Years (28-212): O ther Methods: 213 Results of Linear Trending (T5) o CM ''tf 215 r2* Chosen 213 Results of Averaging (A5) ''tf o CM 215 sd** Chosen 3,541 3,511 3,48.2 no 3,633 3,633 3, no no 1,347 1,347 1, no. no no 4,312 4,9 3,867 n/a n/a 4,98 4,98 4,98 n/a n/a Last Recorded Year (LRY) Itemized Forecast (IF) Chosen Chosen _abor 3,423 3,423 3,423 no 1,995 1,995 1,995 yes Sion-Labor 1,13 1,13 1,13 no yes Other no no Total 4,553 4,553 4,553 n/a 2,699 2,699 2,699 n/a Forecast A djustm ents: Base Forecast Method Adjustments*** Method IF 1,995 1,995 1,995 IF N/A 2,699 2,699 2,699 * r2 = R Squared (Based on recorded years data) ** sd = standard deviation (Based on recorded years data) *** See Appendix B For Additional Detail

189 152 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 588 Miscellaneous Distribution Expenses GRID OPERATIONS - MISCELLANEOUS OPERATING EXPENSES R esults: F o reca sting R esults Method Selected Labor Itemized Forecast 1,995 1,995 1,995 Non-Labor Itemized Forecast Other N/A Total 2,699 2,699 2,699 A nalysis o f Forecasting Methods Analysis of Linear Trending Method: In D , the CPUC stated that if costs have shown a trend in a certain direction over three or more years, the last year recorded is an appropriate base estimate. Costs in this sub-account do not show a trend. As discussed in testimony, the accounting treatment for circuit mapping is changing and the use of an itemized forecast is more appropriate. Analysis of Averaging Method: In D , the CPUC stated that for those sub-accounts which have significant fluctuations in recorded year expenses from year to year, an average of recorded expenses is appropriate. The costs in this sub-account show fluctuations over the historical period, however, as discussed in testimony, the accounting treatment for is changing and the use of an itemized forecast is more appropriate. Analysis of Last Recorded Year (212): In D , the CPUC stated that if costs have shown a trend in a certain direction over three or more years, the last year recorded is an appropriate base estimate. As discussed in testimony, the accounting treatment for circuit mapping is changing and the use of an itemized forecast is more appropriate. Analysis of Itemized Forecast Method: As discussed in testimony, the accounting treatment for circuit mapping is changing in the test year and the use of an itemized forecast is more appropriate to accurately forecast test year expenses.

190 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 153 A ctivity : 588 Miscellaneous Distribution Expenses GRID OPERATIONS - MISCELLANEOUS OPERATING EXPENSES Recorded / Forecast $ () , Labor (std escl) Non-Labor (std escl) Other (not escl) R ecorded Period Forecast Expenses (constant 212$) Labor (standard escalation) 3,274 3,983 4,15 3,379 3,423 1,995 1,995 1,995 Non-Labor (standard escalation) 1,426 2, , Other (not escalatable) Total 4,7 6,255 5,69 4,322 4,553 2,699 2,699 2,699 $() Labor Prior year Total 3,423 1,995 1,995 Change (1,428) Total 3,423 1,995 1,995 1,995 Non-Labor Prior year Total 1, Chanqe (426) Total 1, Other Prior year Total Change Total Total Change Labor (1,428) Non-Labor (426) Other Total N/A (1,854)

191 154 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 588 Miscellaneous Distribution Expenses GRID OPERATIONS - MISCELLANEOUS OPERATING EXPENSES T h is page s h o w s th e c h a n g e s in Labor, N o n -L a b o r, a n d O th e r e x p e n d itu re s fo re c a s t d u rin g th ro u g h 2 15, in c lu d in g re a s o n s fo r th e a d d itio n o f p e rs o n n e l (la b o r), in c re a s e d o ffice s u p p lie s re q u ire d due to an increase in a ctivity (non-labor) Labor: (1,4 2 8 ) S ee T estim ony and S upp orting W orkp apers. N o n -L a b o r: (4 2 6 ) S ee T estim ony and S upp orting W orkp apers. O th e r: N ot applicable.

192 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 155 A ctivity : 588 Miscellaneous Distribution Expenses GRID OPERATIONS - MISCELLANEOUS OPERATING EXPENSES T h is page s h o w s th e c h a n g e s in Labor, N o n -L a b o r, a n d O th e r e x p e n d itu re s fo re c a s t d u rin g th ro u g h 2 1 5, in c lu d in g re a s o n s fo r th e a d d itio n o f p e rs o n n e l (la b o r), in c re a s e d o ffic e s u p p lie s re q u ire d due to an increase in a ctivity (non-labor) Labor: N ot applicable. N on-labor: N ot applicable. O th e r: N ot applicable.

193 156 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 588 Miscellaneous Distribution Expenses GRID OPERATIONS - MISCELLANEOUS OPERATING EXPENSES T h is p a g e s h o w s th e c h a n g e s in L a bor, N o n -L a b o r, a n d O th e r e x p e n d itu re s fo re c a s t d u rin g th ro u g h 2 1 5, in c lu d in g re a s o n s fo r th e a d d itio n o f p e rs o n n e l (la b o r), in c re a s e d o ffic e s u p p lie s re q u ire d due to an increase in a ctivity (non-labor) L a bor: N ot applicable. N on-labor: N ot applicable. O th e r: N ot applicable.

194 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 157 A c tiv ity : 588 Miscellaneous Distribution Expenses GRID OPERATIONS - MISCELLANEOUS OPERATING EXPENSES APPENDIX A Detail Description of Final Cost Centers Included in This Activity

195 158 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A c tiv ity : 588 Miscellaneous Distribution Expenses GRID OPERATIONS - MISCELLANEOUS OPERATING EXPENSES Description of Final Cost Centers included in this activity: * See Appendix C for Summary Final Cost Centers SUMMARY SUMMARY SUMMARY CIRCUIT MAPPING Includes payroll, autom otive, and other expenses incurred in the creation and updating of switching maps and the maintenance of district strip circuit maps. GRID MANAGEMENT CENTER Includes payroll, autom otive, and other expenses incurred by personnel managing, supervising, and performing operating and engineering activities as part of the grid management centers. OUTAGE DATA MANAGEMENT Includes payroll, autom otive, and other expenses o f personnel engaged in tracking, reporting, and analyzing data related to outages on SCE's grid. Includes work necessary to identify source of outage, cause of outage, and if service guarantees have been met. Also includes m anagem ent and supervision of outage data management personnel. F DISTRIBUTION STORM Includes payroll, autom otive, and other expenses incurred in m aintaining and repairing distribution/substation/transm ission equipm ent because of storm dam age such as wind, rain, sleet, hail, earthquakes, lightning, fire, and other catastrophes. F CUSTOMER COMMUNICATIONS ORGANIZATION - STORM EXPENSE Includes payroll, autom otive, and other expenses incurred in m aintaining and repairing distribution/substation/transm ission equipm ent because of storm dam age such as wind, rain, sleet, hail, earthquakes, lightning, fire, and other catastrophes.

196 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 159 A ctivity : 588 Miscellaneous Distribution Expenses GRID OPERATIONS - MISCELLANEOUS OPERATING EXPENSES R e c o rd e d /A d ju s te d ( C o n s ta n t 2 12$ B y F in a l C o s t C e n te r $ () * See Appendix C for Summary Final Cost Centers SUMMARY CIRCUIT MAPPING 2,172 3,198 2,463 2,218 2,26 SUMMARY GRID MANAGEMENT CENTER (29) (63) 234 (67) 5 SUMMARY OUTAGE DATA MANAGEMENT 2,556 3,121 2,373 2,172 2,288 F DISTRIBUTION STORM F CUSTOMER COMMUNICATIONS ORGANIZATION - STORM EXPENSE Total 4,699 6,256 5,7 4,323 4,553 ** Due to rounding, totals may not tie to other workpaper pages.

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198 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 161 A c tiv ity : 588 M iscellaneous Distribution Expenses GRID OPERATIONS - MISCELLANEOUS OPERATING EXPENSES APPENDIX B Detail of Total Company Adjustments to Recorded

199 162 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 588 Miscellaneous Distribution Expenses GRID OPERATIONS - MISCELLANEOUS OPERATING EXPENSES Detail o f Total C om p any A d ju s tm e n ts to R ecorded E xpenses A d js - (N om inal $) $ () Labor (18) Non-Labor O ther Total (18) Company Wide Adjustment 1 GRC-KBS-CW -SHRHLDEXP This adjustment reverses recorded am ounts that are shareholder funded. Labor (18) Non-Labor 18 O ther Total Organizational Unit Adjustm ent 1 TDBU-IDP-OU-REMAPP_TO_ cn CD -v] o This consolidation adjustment re-maps the expenses from activity and to Labor Non-Labor (18) O ther Total (18)

200 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 163 A c tiv ity : 588 Miscellaneous Distribution Expenses GRID OPERATIONS - MISCELLANEOUS OPERATING EXPENSES APPENDIX C Final Cost Centers Included in This Activity

201 164 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 588 Miscellaneous Distribution Expenses GRID OPERATIONS - MISCELLANEOUS OPERATING EXPENSES Final Cost Centers included in this activity: Summary Final Cost Centers: CIRCUIT MAPPING F554 F5541 F5542 F5543 F GRID MANAGEMENT CENTER F52694 F52695 F52696 F52699 F OUTAGE DATA MANAGEMENT F5544 F52698

202 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 165 Activity: 588 Miscellaneous Distribution Expenses GRID OPERATIONS - MISCELLANEOUS OPERATING EXPENSES Individual Final Cost Centers: F F526914

203 166 W orkpaper - Southern California Edison / 215 GRC - APPLICATION End of Workpapers for: A ctivity : 588 Miscellaneous Distribution Expenses GRID OPERATIONS - MISCELLANEOUS OPERATING EXPENSES

204 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 167 Beginning of Workpapers for: 587 Customer Installations Expenses A ctivity : GRID OPERATIONS - SERVICE GUARANTEES - STANDARD 2 AND STANDARD 3 Forecast Method Chosen 212$ () Recorded Forecast Labor N/A Non-Labor N/A Other Last Recorded Year Total Description of Activity: Grid Operations - Service Guarantees - Standard 2 and Standard 3 - This activity is to fund a baseline of bill credits to custom ers when Transmission and Distribution does not meet its Service Guarantee standards. Standard 2 requires service restoration within 24 hours of first becoming aware of a power outage. Standard 3 requires notification to affected customers of a planned outage at least three days prior to an outage occurring. See Appendix C for Final Cost Centers included in this activity.

205 168 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 587 Customer Installations Expenses A ctivity : GRID OPERATIONS - SERVICE GUARANTEES - STANDARD 2 AND STANDARD 3 DETERMINATION OF RECORDED/ADJUSTED I Recorded Period $ () FERC Form 1 Recorded (Nominal $) Labor 8,72 8,567 9,699 9,433 9,711 N on-labor 3,748 5,484 3,85 3,7 3,489 O ther Total 11,82 14,51 12,784 12,53 13,2 Adjustm ents- (Nominal $) - see Appendix B fo r additional detail Labor (8,72) (8,567) (9,699) (9,433) (9,711) Non-Labor (3,748) (5,484) (3,85) (3,7) (3,489) O ther 671 1, Total (11,149) (13,17) (12,192) (11,99) (12,711) Recorded/Adjusted (Nominal $) Labor N on-labor O ther 671 1, Total 671 1, Escalation: Labor Non-Labor O ther Recorded/Adjusted (Constant 212$) Labor N on-labor O ther 671 1, M Total 671 1, Recorded Adjusted (212$) 1, , , Labor (std escl) Non-Labor (std escl) Cither (not escl)

206 W orkpaper - Southern California Edison / 215 GRC - APPLICATION Customer Installations Expenses A ctivity : GRID OPERATIONS - SERVICE GUARANTEES - STANDARD 2 AND STANDARD 3 F o reca sting M ethods - S um m ary o f R esults o f all M ethods S tudie d - 212$ () 2 R ecorded Years ( ): Results of Averaging (A2) o CM CO sd** Chosen Labor no Non-Labor no O ther no Total n/a n/a 3 Recorded Years (21-212): Results of Linear Trending (T3) Results of Averaging (A3) r2* Chosen sd** Chosen Labor Non-Labor O ther Total. no no. no no no no n/a n/a n/a n/a 4 R ecorded Years (29-212): Results of Linear Trending (T4) Results of Averaging (A4) CO o CM r2* Chosen sd** Chosen Labor Non-Labor O ther Total. no no. no no (114).75 no no (114) n/a n/a n/a n/a 5 R ecorded Years (28-212): Results of Linear Trending (T5) Results of Averaging (A5) Labor Non-Labor O ther Total O ther Methods: o CM CO ^r o CM 215 r2* Chosen CO o CM ^r o CM 215 sd** Chosen. no no. no no no no n/a n/a n/a n/a Last Recorded Year (LRY) Itemized Forecast (IF) o CM CO Chosen Chosen Labor Non-Labor O ther Total no no no no yes no n/a n/a Forecast A djustm ents: Base Forecast Method Adjustments* Method I Labor Non-Labor O ther Total N/A N/A LRY * r2 = R Squared (Based on recorded years data) ** sd = standard deviation (Based on recorded years data) *** See Appendix B For Additional Detail

207 17 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 587 Customer Installations Expenses A ctivity : GRID OPERATIONS - SERVICE GUARANTEES - STANDARD 2 AND STANDARD 3 R esults: F o reca sting R esults Method Selected Labor N/A Non-Labor N/A Other Last Recorded Year Total A nalysis o f Forecasting Methods Analysis of Linear Trending Method: In D , the CPUC stated that if costs have shown a trend in a certain direction overth re e or more years, the last year recorded is an appropriate base estimate. Costs have shown a four-year trend downward but are not expected to continue to decline below the 212 recorded level. Analysis of Averaging Method: In D , the CPUC stated that fo r those sub-accounts which have significant fluctuations in recorded year expenses from year to year, an average of recorded expenses is appropriate. This sub-account has not shown fluctuations. Analysis of Last Recorded Year (212): In D , the CPUC stated that if costs have shown a trend in a certain direction overth re e or more years, the last year recorded is an appropriate base estimate. As discussed in testim ony, the last year recorded costs for this sub-account are appropriate for forecasting the test year expenses. Analysis of Itemized Forecast Method: Not applicable.

208 W orkpaper - Southern California Edison / 215 GRC - APPLICATION Customer Installations Expenses A ctivity : GRID OPERATIONS - SERVICE GUARANTEES - STANDARD 2 AND STANDARD 3 Recorded / Forecast $ () 1, , ,.., Labor (std escl) Non-Labor (std escl) Cither (not escl) R ecorded Period Forecast Expenses (constant 212$) Labor (standard escalation) Non-Labor (standard escalation) Other (not escalatable) 671 1, Total 671 1, $ () Labor Prior year Total Change Total Non-Labor Prior year Total Change Total Other Prior year Total Change Total Total Change Labor Non-Labor Other Total N/A

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210 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 173 A c tiv ity : 587 Customer Installations Expenses GRID OPERATIONS - SERVICE GUARANTEES - STANDARD 2 AND STANDARD 3 APPENDIX A Detail Description of Final Cost Centers Included in This Activity

211 174 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 587 Customer Installations Expenses A c tiv ity : GRID OPERATIONS - SERVICE GUARANTEES - STANDARD 2 AND STANDARD 3 Description of Final Cost Centers included in this activity: * See Appendix C for Summary Final Cost Centers SUMMARY CUSTOMER INSTALLATION BILLING ACTIVITIES Activities include payroll, autom otive, and other expenses o f staff engaged in investigating billing-related com plaints and requests from customers. Includes such item s as: handling billing inquiries; setting and removing load-check meters and volt-m eters on custom er's premises; special m eter readings incidental to custom er inquiries; investigations dealing w ith non-theft of energy from unm etered service on custom er's property; investigation/distribution o f returned mail; crossed-m eter verifications and/or apartment checks; and delivery of tenant notices. SUMMARY CUSTOMER TELEPHONE REPRESENTATIVE ACTIVITIES Includes payroll, autom otive, and other expenses incurred in handling telephone calls from custom ers and em ployees related to billings, credit applications for service deposits, etc. Also includes after-hour emergencies. SUMMARY CUSTOMER TROUBLE CALLS Includes payroll, autom otive, and other expenses incurred in investigating service related com plaints and requests from custom ers. Includes such item s as: noisy meters; flickering/partial and/or no-light conditions; servicing m iscellaneous custom er installations when the custom er is not to be charged (includes the handling o f loaned equipment); the search for radio and TV interference; cost of fuses replaced customer's premises; and meter reseals. SUMMARY DISCONNECT/ RECONNECT FOR NON-PAYMENT Includes payroll, autom otive, and other expenses incurred in disconnecting/reconnecting electric services due to nonpaym ent o f bills or noncom pliance with tariff s ch e d u le s. Also includes cost of field collection activities in obtaining paym ent w hen reconnecting these services and cost of obtaining incidental meter reading. SUM M ARY ENERGY PROTECTION Includes payroll, autom otive, and other expenses involved in detection, investigation, and prosecution regarding revenue protection (energy theft). Covers supervisory time, calculations, and adjustm ent o f bills and materials; e.g., lockrings, damaged meters, and other Edison equipment. SUM M ARY INFORM ATIONAL MEETINGS Includes payroll, autom otive, and other expenses o f all em ployees conducting or attending inform ational (non-training) meetings. Includes m eetings such as charitable-fund drives, employee benefits, human relations, and supervisor meetings. SUMMARY MANAGEMENT / SUPERVISION (RURALS) Includes payroll, autom otive, and other expenses incurred in managing, supervising, or directing activities of the department, division, or district offices. SUMMARY RADIO AND TV INTERFERENCE LOCATE / FIX Includes payroll, autom otive, and other expenses incurred in investigating service related com plaints and requests from custom ers. Includes such item s as: noisy meters; flickering/partial and/or no-light conditions; servicing m iscellaneous custom er installations when the custom er is not to be charged (includes the handling o f loaned equipment); the search for radio and TV interference; cost of fuses replaced customer's premises; and meter reseals.

212 W orkpaper - Southern California Edison / 215 GRC - APPLICATION Customer Installations Expenses A c tiv ity : GRID OPERATIONS - SERVICE GUARANTEES - STANDARD 2 AND STANDARD 3 Description of Final Cost Centers included in this activity: * See Appendix C for Summary Final Cost Centers SUM M ARY SAFETY Includes labor, material, contract, chargebacks and other non-labor costs incurred in providing and attending em ployee safety/crew meetings, first aid meetings, safety congresses, safety fairs, safety stand-downs, and fire extinguisher dem onstration meetings. Also includes costs associated w ith audio m etric testing o f em ployees, first aid supplies, safety equipment, and associated travel time, and board and lodging. SUMMARY TELEPHONE REPRESENTATIVE ACTIVITIES Includes payroll, autom otive, and other expenses incurred in handling telephone calls from custom ers and em ployees related to billings, credit applications for service deposits, etc. Also includes after-hour emergencies. SUM M ARY TRAINING SEAT-TIME Includes payroll, autom otive, and other expenses incurred by em ployees engaged in com pliance training activities or classes. Training activities may include com pany classes, sem inars, orientation, video/dvd and web-based classes. Also includes payroll, automotive, and other expenses o f em ployees engaged in training activities w hether it be on-the-job training or off-the-job participation in department/division/district training programs. SUMMARY TURN-ON / TURN-OFF SERVICE Includes payroll, autom otive, and other expenses incurred in routine turning on and turning off electric services. Also includes meter readings incidental to this operation. SUMMARY TURN-ON / TURN-OFF SERVICE OVERHEAD (OH) Includes payroll, autom otive, and other expenses incurred in routine turning on and turning off electric services. Also includes meter readings incidental to this operation. F5172 ADVANCED TECHNOLOGY (AT) - DISTRIBUTED ENERGY RESOURCES Includes distributed energy resources payroll, autom otive, and other expenses o f personnel performing engineering and service planning activities for the electric distribution system including consultations and negotiations with custom ers, other utilities, and other outside agencies. Also includes experim ents for improving construction m ethods and the cost of new tools, materials, and equipm ent used in conducting the experim ents including any salvage obtained. Includes also the design, implementation, and evaluation of new and existing engineering programs. F5241 ADVANCED TECHNOLOGY (AT) - FIELD TECHNOLOGIES Includes field technologies payroll, autom otive, and other expenses o f personnel performing engineering and service planning activities for the electric distribution system including consultations and negotiations with custom ers, other utilities, and other outside agencies. Also includes experim ents for improving construction m ethods and the cost of new tools, materials, and equipm ent used in conducting the experim ents including any salvage obtained. Includes also the design, implementation, and evaluation of new and existing engineering programs. F5247 MISCELLANEOUS EXPENSES Includes payroll, autom otive, and other general costs and expenses not assignable to other accounts such as: telephone expense, postage expense, publications and printing services, inspection and repair o f office m achines, w ater services, lost tim e resulting from vehicle breakdowns and all other types o f motorized equipm ent including private vehicles used in Com pany service, m iscellaneous stationery and office supplies, rental of uniforms, interviews or qualification examinations, etc., and provessing of grievances under the Labor Union Contracts.

213 176 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 587 Customer Installations Expenses A c tiv ity : GRID OPERATIONS - SERVICE GUARANTEES - STANDARD 2 AND STANDARD 3 Description of Final Cost Centers included in this activity: * See Appendix C for Summary Final Cost Centers F52454 SERVICE GUARANTEE #2 RESTORING SERVICE Includes paym ents to custom er in instances where SCE does not meet the requirements of Service Guarantee 2 - restoration of service within 24 hours. F52457 SERVICE GUARANTEE #3 ADVANCE NOTICE Includes paym ents to custom er in instances where SCE does not meet the requirements of Service Guarantee 3 - provide three days advance notice of a planned outage. F MANAGEMENT AND SUPERVISION Includes payroll, autom otive, and other expenses incurred in managing, supervising, or directing activities of the department, division, or district offices.

214 W orkpaper - Southern California Edison / 215 GRC - APPLICATION Customer Installations Expenses A ctivity : GRID OPERATIONS - SERVICE GUARANTEES - STANDARD 2 AND STANDARD 3 Recorded/Adjusted (Constant 212$ By Final Cost Center $ () * See Appendix C for Summary Final Cost Centers SUM M ARY SUM M ARY CUSTOMER INSTALLATION BILLING ACTIVITIES CUSTOMER TELEPHONE REPRESENTATIVE ACTIVITIES SUMMARY CUSTOMER TROUBLE CALLS SUM M ARY DISCONNECT/ RECONNECT FOR NON-PAYMENT SUMMARY ENERGY PROTECTION SUMMARY INFORMATIONAL MEETINGS SUMMARY MANAGEMENT/ SUPERVISION (RURALS) SUMMARY RADIO AND TV INTERFERENCE LOCATE / FIX SUM M ARY SAFETY SUMMARY TELEPHONE REPRESENTATIVE ACTIVITIES SUMMARY TRAINING SEAT-TIME SUMMARY TURN-ON / TURN-OFF SERVICE SUM M ARY TURN-ON / TURN-OFF SERVICE OVERHEAD (OH) F5172 ADVANCED TECHNOLOGY (AT) - DISTRIBUTED ENERGY RESOURCES F5241 ADVANCED TECHNOLOGY (AT) - FIELD TECHNOLOGIES F5247 MISCELLANEOUS EXPENSES F52454 SERVICE GUARANTEE #2 RESTORING SERVICE F52457 SERVICE GUARANTEE #3 ADVANCE NOTICE F MANAGEMENT AND SUPERVISION Total 671 1, ** Due to rounding, totals may not tie to other workpaper pages.

215 178 W orkpaper - Southern California Edison / 215 GRC - APPLICATION THIS PAGE INTENTIONALLY LEFT BLANK

216 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 179 A c tiv ity : 587 Customer Installations Expenses GRID OPERATIONS - SERVICE GUARANTEES - STANDARD 2 AND STANDARD 3 APPENDIX B Detail of Total Company Adjustments to Recorded

217 18 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 587 Customer Installations Expenses A ctivity : GRID OPERATIONS - SERVICE GUARANTEES - STANDARD 2 AND STANDARD 3 Detail o f Total C om p any A d ju s tm e n ts to R ecorded E xpenses A d js - (N om inal $) $ () Labor (8,72) (8,567) (9,699) (9,433) (9,711) Non-Labor (3,748) (5,484) (3,85) (3,7) (3,489) O ther 671 1, Total (11,149) (13,17) (12,192) (11,99) (12,711) O rganizational Unit Adjustm ent 1 CSBU-KMM.IDP-OUX-SERVGUAR_TDBU C ustom er Service accounting adjustm ent to appropriately map expenses - This adjustm ent transfers expenses from FERC 91 Business M anagem ent and Support for Service G uarantee expense incurred by Transm ission and Distribution. Labor Non-Labor O ther 671 1, Total 671 1, O rganizational Unit Adjustm ent 2 TDBU-IDP-OU-REM OVED_TRAINING_TOPSIDE This adjustment removes training expenses. Labor 1 6 Non-Labor 2 7 O ther Total O rganizational Unit Adjustm ent 3 TDBU-IDP-OU-REM APP_TO _F5367 This adjustment remaps FERC 56 F51665 (in 21) and FERC 587 F into FERC 588 F5367. Labor 1 7 (1) Non-Labor (2) (1) O ther Total 1 5 (2) O rganizational Unit Adjustm ent 4 TDBU-IDP-OU-REM APP_TO _58.26 This consolidation adjustment re-maps the expenses from activity , , and to Labor (25) Non-Labor (3) O ther Total (28)

218 W orkpaper - Southern California Edison / 215 GRC - APPLICATION Customer Installations Expenses A ctivity : GRID OPERATIONS - SERVICE GUARANTEES - STANDARD 2 AND STANDARD 3 Detail o f Total C om p any A d ju s tm e n ts to R ecorded E xpenses A d js - (N om inal $) $ () Organizational Unit Adjustm ent 5 TDBU-IDP-OU-EXTENDEDJ/VARRANTY This adjustm ent rem oves recorded expenses in 21 for a 3-Yr extended warranty. The costs were adjusted to 211, and 212. Labor Non-Labor (17) O ther Total (17) Organizational Unit Adjustm ent 6 TDBU-IDP-OU-OTA_CAP_ CO _i O o This one tim e adjustm ent rem oves tool expenses that should be capitalized. Labor Non-Labor (68) O ther Total (68) Organizational Unit Adjustm ent 7 TDBU-IDP-OU-REMAPP. This consolidation adjustment re-maps the expenses from activity 58.26, , and to H s k) cn o Labor (59) (8) (7) (64) (67) Non-Labor (153) (43) (26) (36) (13) O ther Total (212) (123) (96) (1) (8) Organizational Unit Adjustm ent 8 TDBU-IDP.KMM-OUX-TRANSFER_RURALS_TO _CS This adjustm ent transfers rural recorded expenses from activity , and to 587 C ustom er Service. Labor Non-Labor O ther (299) (43) (442) (85) (416) (59) (411) (45) (444) (31) Total (342) (527) (475) (456) (475) Organizational Unit Adjustm ent 9 TDBU-IDP-OU-REMAPP._TO_ This consolidation adjustment re-maps the expenses from activity 58.26, , and to Labor (624) (569) (645) (612) (674) Non-Labor (13) (149) (219) (14) (359) O ther Total (754) (718) (864) (716) (1,33)

219 182 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 587 Customer Installations Expenses A ctivity : GRID OPERATIONS - SERVICE GUARANTEES - STANDARD 2 AND STANDARD 3 Detail o f Total C om p any A d ju s tm e n ts to R ecorded Expenses A d js - (N om inal $) $ () Organizational Unit Adjustm ent 1 TDBU-IDP-OU-REMAPP_TO _ This consolidation adjustm ent re-m aps the expenses from activity , , , , and to Labor (7,65) (7,476) (8,579) (8,359) (8,525) Non-Labor (3,419) (5,27) (2,68) (2,922) (3,121) O ther Total (1,484) (12,683) (11,187) (11,281) (11,646)

220 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 183 A c tiv ity : 587 Customer Installations Expenses GRID OPERATIONS - SERVICE GUARANTEES - STANDARD 2 AND STANDARD 3 APPENDIX C Final Cost Centers Included in This Activity

221 184 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 587 Customer Installations Expenses A ctivity : GRID OPERATIONS - SERVICE GUARANTEES - STANDARD 2 AND STANDARD 3 Final Cost Centers included in this activity: Summary Final Cost Centers: CUSTOMER INSTALLATION BILLING ACTIVITIES F5244 F F52538 CUSTOMER TELEPHONE REPRESENTATIVE ACTIVITIES F F F F F523 F5231 F5232 F5233 CUSTOMER TROUBLE CALLS F5424 F5426 F5429 F5441 F5445 F5451 F5453 F5467 F5475 F55 F551 F5515 F552 F5529 F5538 F52558 F F52336 F52337 F52338 F52339 F5234 F52341 F52342 F52343 F52344 F52345 F52346 F52347 F52348 F52349 F5235 F52351 F52352 F52353 F52354 F52355 F5279 F52711 F F F F F F52285 F F F F F F F F F F52286 F F F F F52299 F F F F F DISCONNECT/ RECONNECT FOR NON-PAYMENT F F F F F F F F F F52292 F F F F F F F5234 F5235 F5236 F5237 F5238 F5239 F5231 F52311 F52312 ENERGY PROTECTION F F F INFORMATIONAL MEETINGS F52497 F F F F F F F F F MANAGEM ENT/SUPERVISION (RURALS) F F F F F F52277 F F RADIO AND TV INTERFERENCE LOCATE / FIX F5118 F5158 F5163 F5235 SAFETY F591 F599 F F F F F F F F F F TELEPHONE REPRESENTATIVE ACTIVITIES F F F52288 F F F F F F F F F F52289 F F F F TRAINING SEAT-TIME F F F F52329 F F F F F F F F819 TURN-ON / TURN-OFF SERVICE F52313 F52314 F52315 F52316 F52317 F52318 F52319 F5232 F52321

222 W orkpaper - Southern California Edison / 215 GRC - APPLICATION Customer Installations Expenses A ctivity : GRID OPERATIONS - SERVICE GUARANTEES - STANDARD 2 AND STANDARD 3 Final Cost Centers included in this activity: Summary Final Cost Centers: TURN-ON / TURN-OFF SERVICE OVERHEAD (OH) F F F F F F F52295 F F F F F F F F F522959

223 186 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 587 Customer Installations Expenses A c tiv ity : GRID OPERATIONS - SERVICE GUARANTEES - STANDARD 2 AND STANDARD 3 Individual Final Cost Centers: F5172 F5241 F5247 F52454 F52457 F522757

224 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 187 End of Workpapers for: 587 Customer Installations Expenses A ctivity : GRID OPERATIONS - SERVICE GUARANTEES - STANDARD 2 AND STANDARD 3

225 188 W orkpaper - Southern California Edison / 215 GRC - APPLICATION Southern California Edison Company CAPITAL W O RKPAPERS GRC PROJECT DETAIL WORKSHEET: FACILITIES - OPERATIONAL O rg a n izatio nal U n it S um m ary: T&D T e stim o n y S um m ary: SCE-3, V o lu m e 7 M ajor Pro gra m : GRID OPERATIONS C ategory: F a cilitie s - O perational D etail: F a cilitie s - O perational D atabase ID: 683 / RO M odel ID: WITNESS Paul Grigaux 2. PROJECT DETAIL Program Group Program Pin # W BS Element 3. PROJECT TYPE OTHER - TDBU FAC - OPERATIONAL 3363 CET-PD-OT-FO-FACOPE Select one Select one X Compliance: Safety, Environmental, Licenses Replacem ents in Kind Upgrades Blanket: FE, Tools, Spare Parts, Lab, Computer Equip Custom er Growth Load Growth Reliability Capitalized Software Various (See Below) 4. ASSET TYPE 5. CLO SE DATE Distribution Substations Specific Blanket 6. RIIM ELIG IBLE No 7. COST ESTIMATES (NOMINAL $) Yr SCE $ 215 GRC - Capital Expenditures Forecast 213 4,6 7, 214 5,6 6, 5, 215 5,749 4, 216 5,843 3, 2, 217 5,985 1, Total 27, (a). SYSTEM SHORT TEXT Fac - Operational 7 (b). DETAILED DESCRIPTION 8. SCOPE 9. JUSTIFICATION P. Grigaux

226 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 189 Beginning of Workpapers for: A ctivity : 596 Maintenance of Street Lighting and Signal Systems GRID OPERATIONS - STREET LIGHT MAINTENANCE Forecast Method Chosen Recorded $ () Forecast 215 Labor N/A Non-Labor N/A Other N/A Total Description of Activity: Grid Operations - Street Light Maintenance - Includes the cost of labor, materials used and expenses incurred in maintenance of street lighting and signal system assets. This activity package has zero dollars; all costs have been transferred to See Appendix C for Final Cost Centers included in this activity.

227 19 W orkpaper - Southern California Edison / 215 GRC - APPLICATION FERC A c c o u n t: A c tiv ity : 596 Maintenance of Street Lighting and Signal Systems G R ID O P E R A T IO N S - S T R E E T L IG H T M A IN T E N A N C E DETERMINATION OF RECORDED/ADJUSTED I Recorded Period $ () FERC Form 1 Recorded (Nominal $) Labor 2,919 3,171 3,63 2,68 3,21 N on-labor 3,86 4,558 3,225 3,116 3,159 O ther Total 6,779 7,729 6,288 5,796 6,369 Adjustm ents- (Nominal $) - see Appendix B fo r additional detail Labor (2,919) (3,171) (3,63) (2,68) (3,21) N on-labor (3,86) (4,558) (3,225) (3,116) (3,159) O ther Total (6,779) (7,729) (6,288) (5,796) (6,369) Recorded/Adjusted (Nominal $) Labor N on-labor O ther Total Escalation: Labor N on-labor O ther Recorded/Adjusted (Constant 212$) Labor Non-Labor Other Total Recorded Adjusted (212$) Labor (std escl) Non-Labor (std escl) Other (not escl)

228 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 191 A c tiv ity : 596 Maintenance of Street Lighting and Signal Systems GRID OPERATIONS - STREET LIGHT MAINTENANCE APPENDIX A Detail Description of Final Cost Centers Included in This Activity

229 192 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 596 Maintenance of Street Lighting and Signal Systems GRID OPERATIONS - STREET LIGHT MAINTENANCE Recorded/Adjusted (Constant 212$ By Final Cost Center $ () * See Appendix C for Summary Final Cost Centers SUMMARY STREET LIGHT MAINTENANCE SUMMARY STREET LIGHT MAINTENANCE DESIGN CONSTRUCT MAINTAIN (DCM) F51963 STREET LIGHT OPERATIONS / PATROLS F SETTING / REMOVING / RELOCATING METERS Total ** Due to rounding, totals may not tie to other workpaper pages.

230 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 193 A c tiv ity : 596 Maintenance of Street Lighting and Signal Systems GRID OPERATIONS - STREET LIGHT MAINTENANCE APPENDIX B Detail of Total Company Adjustments to Recorded

231 194 W orkpaper - Southern California Edison / 215 GRC - APPLICATION A ctivity : 596 Maintenance of Street Lighting and Signal Systems GRID OPERATIONS - STREET LIGHT MAINTENANCE Detail o f Total C om p any A d ju s tm e n ts to R ecorded Expenses A d js - (N om inal $) $ () Labor (2,92) (3,171) (3,63) (2,68) (3,21) Non-Labor (3,86) (4,558) (3,225) (3,116) (3,159) O ther Total (6,78) (7,729) (6,288) (5,796) (6,369) Organizational Unit Adjustm ent 1 TDBU-IDP-OU-REMAPP_TO_ This consolidation adjustment re-maps the expenses from activity to Labor (3) Non-Labor (2) O ther Total (5) Organizational Unit Adjustm ent 2 TDBU-IDP-OU-OTA_VENDOR _COSTS This adjustment corrects the accounting for the Street Light Patrols' vendor from FERC 596 to FERC 585. Labor Non-Labor (442) O ther Total (442) Organizational Unit Adjustm ent 3 TDBU-IDP-OU-REMAPP_TO_ This consolidation adjustment re-maps the expenses from activity , , and to Labor (2,918) (3,171) (3,63) (2,68) (3,21) Non-Labor (3,858) (4,116) (3,225) (3,116) (3,159) O ther Total (6,776) (7,287) (6,288) (5,796) (6,369)

232 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 195 End of Workpapers for: A ctivity : 596 Maintenance of Street Lighting and Signal Systems GRID OPERATIONS - STREET LIGHT MAINTENANCE

233 196 W orkpaper - Southern California Edison / 215 GRC - APPLICATION Southern California Edison Company CAPITAL WORKPAPERS GRC MAJOR PROGRAM SUMMARY: GRID OPERATIONS (Nominal $) Operating Unit Summary: T&D Testimony: SCE-3, Volume 7 Major Program: GRID O PERATIO N S Capital Expenditures (Forecast ) W B S Elem ent T estim on y (Category) T estim on y D eta iled D escription Total CET-PD-OT-FO-FACOPE Facilities - Operational Facilities - Operational 4,6 5,6 5,749 5,843 5,985 27,777 S u b to ta l 4,6 5,6 5,749 5,843 5,985 27,777 CET-PD-ST-DS-CAT Storm Distribution Storm 41,181 42,26 43,12 44,66 45, ,81 CET-PD-ST-SS-SUBSNW Storm Substation Storm ,619 CET-PD-ST-TS-TREAST Storm Transmission Storm 4,462 4,562 4,683 4,76 4,876 23,342 S u b to ta l 45,952 47,84 48,11 49,155 5,47 24,77 CET-PD-OT-SL-CAT Streetlights Streetlights 62,584 5,947 45,452 46,468 47, ,174 S u b to ta l 62,584 5,947 45,452 46,468 47, ,174 G ra n d Total 113,136 13,631 99,31 11,466 14, ,721

234 W orkpaper - Southern California Edison / 215 GRC - APPLICATION 197 Southern California Edison Company CAPITAL WORKPAPERS GRC MAJOR PROGRAM SUMMARY: GRID OPERATIONS (Nominal $) O pera tin g U n it S um m ary: T&D Testimony: SCE-3, V olum e 7 Major Program: GRID O PERATIO NS Capital Expenditures (Forecast ) (2) MAJOR PROGRAM RECORDED AND AUTHORIZED CAPITAL AND FORECAST EXPENDITURES: 215 GRC Description Recorded and Authorized Capital Expenditures Forecast Capital Expenditures Authorized Expenditures 2,861 63,781 Recorded & Forecast Expenditures 46,6 54,945 59,128 65,127 51, ,136 13,631 99,31 11,466 14,179 Total Expenditures 276, ,721 CPUC Jurisdiction* 45,569 54,567 58,624 64,554 5,932 Recorded, A uthorized and Forecast Expenditures Graph m il R fier. r c fto A. it h - r 7 ftd F o re c a s t *Based on 212 Transmission/Distribution ISO Facilities Study