NV Energy, Inc. Operating Companies Open Access Transmission Tariff History of Changes and Filings

Transcription

1 2/1/2010 Name Change Filing Cover Sheet none ER /31/2010 3/3/2010 This is a housekeeping filing to change the name of the OATT from the Sierra Pacific 172,195,206C,227, Resources Operating Companies OATT to the NV Energy, Inc. Operating Companies 253A - 253W (24 sheets), OATT. Note that EVERY header of the entire 600+ page OATT was changed to reflect the 253Y - 253DD (6 sheets), new name of the OATT. However, the pages listed here are the ones that had the Sierra 253FF - 253JJ (5 sheets), Pacific Resources (or SPR) name embedded in the page somewhere, and that we had to 257AA change. (41 sheets) This total does not include all the remaining sheets that The filing was accepted by the FERC on 3/3/2010 without change. just need the header name changed. 9/14/2009 Attachment K-Transmission 253I 253I.01 OA /7/2007 3/3/2010 This compliance filing was required by the FERC Order on Compliance Filings issued July Planning Process Compliance (1 sheet) (1 sheet) 16, 2009 in Docket No. OA , 128 FERC 61,063. The compliance filing explains Filing how we will analyze and select the preferred solution from competing alternatives so as to make it clear that transmission, generation, and demand resources are considered on a comparable basis. The filing was accepted by the FERC on 3/3/2010 without further changes. 8/4/2008 General Rate Case Zone A 165,186,189 ER /23/2007 1/15/2009 Note this is not an actual filing. This is the date that the Commission accepted our filing of (not a filing) Rate Change 190,244 the uncontested Zone A rate case settlement back on September 7, The original (Not an actual filing-see (5 sheets) case was filed back on September 14, The new rates that take effect - effective comments at right.) retroactive to November 23, are the following: point-to-point and network rates on Sheet No. 186 (Schedule 7), Sheet Nos. 189 & 190 (Schedule 8), and Sheet No. 244 (Attachment H). Note that the new Schedule 1 rates on Sheet No. 165 took effect back on November 16, /13/2008 NAESB-WEQ Compliance Filing 31A, none ER /1/2008 2/18/2009 This was a minor compliance filing to make a correction to the original filing, which was per Order No. 676-C (1 sheet) made on 9/17/2008. This compliance filing is made to state in the OATT - specifically - that we have received waiver of Order No. 676-C requirements related to the standard for Transmission Loading Relief - Eastern Interconnection. The filing was accepted by the FERC on 2/18/2009 without changes. 10/15/2008 Attachment K-Transmission 253A-253CC 253DD-253KK OA /7/2007 7/16/2009 On July 16, 2008 the Commission accepted the changes filed in the December 7, 2007 Planning Process Compliance (29 sheets) (8 sheets) compliance filing subject to a further compliance filing. What was interesting about the Filing Compliance Order is that a single order was issued to cover the Attachment K filings of several utilities. The utilities were grouped together because of their membership in both the Southwest Area Transmission Planning group (SWAT) and WestConnect. The utilities grouped together in this order included the following: Page 1 of 9 3/31/2010

2 El Paso Electric Company UNS Electric, Inc. Public Service Company of New Mexico Arizona Public Service Company Tucson Electric Power Company SPR Operating Companies On October 15, 2008 the Company made a compliance filing addressing all of the issues raised in the Compliance Order. The filing was accepted by the FERC on 7/16/2009. A further compliance filing will be required in mid-september. That compliance filing must explain how we will analyze and select the preferred solution from competing alternatives so as to make it clear that transmission, generation, and demand resources are considered on a comparable basis. 9/17/2008 NAESB-WEQ Compliance Filing 3,31A, 31D ER /1/ /13/2008 Filing to incorporate by reference the latest edition of the NAESB-WEQ business per Order No. 676-C 31B,31C (1 sheet) practice rules. (4 sheets) The filing was accepted by the FERC on 11/13/08. We have a minor compliance filing to make on 12/13/2008 to note our exemption from the Transmission Loading Relief-Eastern Interconnection standard in our OATT. In the acceptance order the Commission specifically assigned effective dates to specific standards, as listed here: 10/1/ >---->----> Business Practices for OASIS, Business Practices for OASIS Standards & Communication Protocols, OASIS Data Dictionary, Gas/Electric Coordination, Public Key Infrastructure, and Business Practices for OASIS Implementation Guide 8/28/ >---->----> Coordinate Interchange, Area Control Error Equation Special Cases, Manual Time Error Correction, and Inadvertent Interchange Payback 9/8/2008 Order 890-B Compliance Filing 19,105,108, none OA /8/ /14/2008 OATT reform continues with yet another "interpretation and clarification" of OATT Reform 109,109B Order 890. This filing removes the requirement that a reserve sharing program be (5 sheets) Commission-approved, adds the language except for purposes of fulfilling obligations under a reserve sharing program to selected sections, and makes other language changes. The filing was accepted by the FERC on 11/14/08 without changes. 9/2/2008 General Rate Case Zone A 186,189 none ER /23/2007 1/15/2009 This was the actual filing of the uncontested settlement in this Zone A (SPPC) General Rate Change Settlement 190,244 Rate Case. When the FERC approves this filing, the new rates that take effect are the Agreement Compliance Filing (4 sheets) following: point-to-point and network rates on Sheet No. 186 (Schedule 7), Sheet Nos. 189 & 190 (Schedule 8), and Sheet No. 244 (Attachment H). Note that the new Schedule 1 rates on Sheet No. 165 took effect back on November 16, The filing was accepted by the FERC on 1/15/09 without further changes. 8/11/2008 Filing to Address Issues of: 1,2,9,12, 109A.1,109C, ER /10/ /10/2008 This filing is to address issues similar to those raised in a recent Arizona Public Service Control Area ID, Bookouts, 24,26,27, 198B,198C, Company, 121 FERC 61,246 (2007), Puget Sound Energy, 120 FERC 61,232 Rollover Rights, & Other Issues 104, D,198E, (2007) and Entergy Services, 120 FERC 61,042 (2007) filings. Topic areas include (9 sheets) (6 sheets) the identification of the source control area when designating network services, the use of Page 2 of 9 3/31/2010

3 bookouts, the incorporation of network resource characteristics by reference, revision to rollover rights language, and other issues. The filing was accepted by the FERC on 10/10/08 without changes. 5/16/2008 Order 890 OATT Reform 26,27,53,58, 187A,257AA OA /1/ /10/2008 The final paragraph of the April 17, 2008 Order Conditionally Accepting Compliance Filing Compliance Filing 59,188,257A, (2 sheets) (for Sheets 26 & 27) ( Order 890 Compliance Order ) required the Nevada Companies to submit, within B,257C, days of that order, a compliance filing to make various changes outlined in the Order D,257E, 7/13/ /10/2008 Compliance Order. The areas addressed in the Order include making several changes to 257F,257G (for the remaining sheets) the Attachment L-Creditworthiness Procedures, make changes to unreserved use (13 sheets) penalties, file a new Attachment J-Procedures for Addressing Parallel Flows, and to return the rollover rights language to where it was prior to Order 890, pending acceptance of the Nevada Companies' Attachment K-Transmission Planning Process. The new Attachment J-Procedures for Addressing Parallel Flows was filed already on March 17, 2008 in conjunction with the Nevada Companies' Order 890-A OATT Reform Compliance Filing, so it was no longer needed to be filed with this compliance filing. All other ordered changes were made, however. 4/15/2008 General Rate Case Zone A 186,189 none ER /15/2008 1/15/2009 Note this is not an actual filing. Rather, this is the date that these new rates - filed back on (not a filing) Rate Change 190,244 September 14, take effect. The new rates that take effect today are the following: (Not an actual filing-see (4 sheets) point-to-point and network rates on Sheet No. 186 (Schedule 7), Sheet Nos. 189 & 190 comments at right.) (Schedule 8), and Sheet No. 244 (Attachment H). Note that the new Schedule 1 rates on Sheet No. 165 took effect back on November 16, /11/2008 Attachment C-Available Transfer 205,206, 205A,205B, OA /11/2008 9/12/2008 Paragraph 12 of March 12, 2008 Order On Compliance Filing ( ATC Compliance Order ) Capability Compliance Filing 206A,206B, 205C,206E.1, required the Nevada Companies to submit, within 30 days of that order, a compliance filing 206C,206D, 206E.2,206E.3, to address certain issues. These issues include: to provide a working link to mathematical 206E,206F, 206H.1,206M algorithms, provide a clear list of assumptions used for TTC calculations, explain the set 206G,206H, (8 sheets) aside for non-oatt customers, and present a detailed explanation of assumptions used to 206I,206J,206K,206L calculate TRM. We also, at this time, took the opportunity to add a table of contents and (14 sheets) reformat the Attachment to make topic headings more clear and improve the structure. The filing was made on April 11, 2008 and the changes were made effective that same date. On September 12, 2008 the Commission accepted the changes filed in the April 11, 2008 compliance filing without further modification. That closes this series of filings, which began with the original filing on September 11, 2007 which resulted from OATT reform Order /2/2008 Imbalance Penalty Revenue 177A,177B, none OA /2/2008 5/30/2008 Paragraph 12 of March 3, 2008 Order On Compliance Filing ( Imbalance Compliance Compliance Filing 196C,196D Order ) required the Nevada Companies to submit, within 30 days of that order, a (4 sheets) compliance filing to make the definition of non-offending customers less restrictive and to calculate penalty revenues on an hourly (rather than monthly) basis. We also made a correction to the language, changing the term "Hourly Energy Proxy" to "Transmission Provider's Incremental Energy Cost." The filing was made on April 2, 2008 and the Page 3 of 9 3/31/2010

4 changes were made effective that same date. On May 30, 2008 the Commission accepted the changes filed in the April 2, 2008 compliance filing without further modification. That closes this series of filings, which began with the original filing on April 14, 2007, continued with a compliance filing on August 10, 2007 and then another (and final) compliance filing on April 2, /17/2008 Order 890-A OATT Reform 10,19,22,27, 28A,118A OA /17/ /15/2008 On March 17, 2008, the Sierra Pacific Resources Operating Companies filed with the Compliance Filing 28,31,31A,34, (2 sheets) FERC the OATT Compliance changes to the OATT stemming from FERC Order 890-A 46,47,56,64,64A,70,74,77, OATT reform. Order 890-A was issued December 28, In addition, the new 79,80A,93,94,109B,117, Attachment J-Procedures for Addressing Parallel Flows was filed which was originally to 118,187,188,191,202A be filed on July 13, 2007 as a result of the original Order 890-OATT Reform. The Order (27 sheets) 890-A changes were effective March 17, A,145,247,248 7/13/ /15/2008 The original Order 890 change - Attachment J-Procedures for Addressing Parallel Flows - (4 sheets) (for the 4 Attachment J Sheets) was made effective July 13, The filing was accepted by the FERC on 10/15/08 without changes. However, FERC Auditor Bryan Dunn ( ) did find an error that was not big enough to deny acceptance, but he did request that we correct the error. Revised Sheet No. 56 contains the ordered revisions but shows an effective date of 7/13/2007 and a designation of "1st revised". However, the proper effective date should be 3/17/2008 and the designation should be "2nd revised". 12/7/2007 Attachment K - Transmission 253A 253B-253CC OA /5/2008 7/17/2008 On December 7, 2007, the Sierra Pacific Resources Operating Companies made an Planning Process (1 sheet) (28 sheets) OATT compliance filing of a new OATT Attachment K Transmission Planning Process as required in FERC OATT Reform Order 890. The proposed new OATT Attachment K is 29 pages in length and consists of modified Sheet Number 253A and new Sheet Numbers 253B through 253CC. The changes were made effective 60 days from the date of the filing-february 5, On July 17, 2008 the Commission accepted the changes filed in the February 5, 2008 compliance filing subject to a further compliance filing. What was interesting about the Compliance Order is that a single order was issued to cover the Attachment K filings of several utilities. The utilities were grouped together because of their membership in both the Southwest Area Transmission Planning group (SWAT) and WestConnect. The utilities grouped together in this order included the following: El Paso Electric Company UNS Electric, Inc. Public Service Company of New Mexico Arizona Public Service Company Tucson Electric Power Company SPR Operating Companies 9/14/2007 General Rate Case Zone A 165,186,189 none ER /15/2009 On September 14, 2007, the Sierra Pacific Resources Operating Companies filed at 190,244 Point-to-point & network rates FERC to amend its Zone A rates for the following schedules: (5 sheets) on Sheet 186 (Schedule 7), Schedule 1 - Scheduling, System Control, and Dispatch Service, Sheets 189 & 190 (Schedule 8), Schedule 7 - Long-Term Firm & Short-Term Firm Point-to-Point Transmission Service, and Sheet 244 (Attachment H): 4/15/2008 Schedule 8 - Non Firm Point-to-Point Transmission Service, and Attachment H - Network Integration Transmission Service. Schedule 1 rates on Sheet 165: 11/16/2007 The original proposed effective date for these changes was November 15, On November 13, 2007, the Commission issued an Order which accepted the rate for Schedule 1 effective November 16, 2007 (subject to refund), and postponed the effective dates for the remaining schedules until April 15, 2008 (which will also be subject to refund) pending a settlement and/or hearing. The filing of the final uncontested settlement in this case was on 9/2/2008. Page 4 of 9 3/31/2010

5 That settlement was accepted by the FERC on 1/15/09 without further changes. 9/14/2007 CBNS-Update 126,130D,130E 130D.01 ER /13/ /28/2007 On September 14, 2007, the Sierra Pacific Resources Operating Companies made a (3 sheets) (1 sheet) compliance filing as directed by the FERC in their Capacity Based Network Service ( CBNS ) order to make several selected modifications to the new CBNS in consultation with their transmission customers. Those proposed modifications are contained in OATT Sheet Numbers 126, 130D, 130D.01 (a new sheet), and 130E. As directed in the FERC CBNS Order the changes were made effective July 13, On November 28, 2007 the FERC accepted the compliance changes as filed. 9/11/2007 Attachment C - ATM Calculations 205, A - 206L OA /11/2007 3/12/2008 On September 11, 2007, the Sierra Pacific Resources Operating Companies made an (2 sheets) (12 sheets) OATT compliance filing of a new OATT Attachment C Methodology to Assess Available Transfer Capability as required in FERC OATT Reform Order 890. The proposed new OATT Attachment C is 14 pages in length and consists of modified Sheet Numbers 205 and 206 and new Sheet Numbers 206A through 206L. As provided for in that order, the changes were made effective on the same day as the filing: September 11, On 3/12/08 the Commission conditionally accepted our Attachment C subject to us making a compliance filing within 30 days (on Friday, April 11, 2008) to make requested changes. These changes are to correct certain items and to add certain clarifications and explanations. We made that filing - which changed or added 22 tariff sheets - on April 11, /29/2007 Loss Compensation Schedule , A ER /1/ /4/2007 This change to OATT Schedule 10 - Loss Compensation Service provides an alternative (2 sheets) (1 sheet) settlement option to Transmission Customers who would prefer to settle Real Power Losses financially as opposed to supplying via Physical Delivery the Real Power Losses necessary to compensate the Transmission Provider for such losses. Thus, there are now three settlement options in the OATT for Real Power Losses: 1) supplying losses via physical delivery, 2) arranging for a third party to supply losses via physical delivery, or 3) financial settlement, which is the new option available with this filing. That filing was accepted by the FERC on 10/4/07 without change. 8/10/2007 Imbalance Penalty Charges 177A,196C 177B,196D OA /13/2007 3/3/2008 Paragraph 12 of July 13, 2007 Order Conditionally Accepting Proposed Variations From Compliance Filing (2 sheets) (2 sheets) The Pro Forma Open Access Transmission Tariff designated Docket No. OA ( Imbalance Order ) required the Nevada Companies to submit, within 30 days of that order, a compliance filing proposing a mechanism for crediting imbalance penalty revenues to all non-offending customers and to the Nevada Companies on behalf of their own customers in accordance with the requirements of Order No On 3/3/08 the Commission conditionally accepted those changes, subject to us making a compliance filing within 30 days (on Wednesday, April 2, 2008) to, among other things, make the definition of non-offending customers less restrictive. We made that filing - which changed or added 4 tariff sheets - on April 2, /27/2007 Capacity-Based Network Service 98 none ER /13/2007 9/12/2007 On July 27, 2007, the Sierra Pacific Resources Operating Companies made a Termination Change (1 sheet) compliance filing as directed by the FERC in their CBNS order to change the termination date from the originally proposed December 31, 2012 to the new July 12, Page 5 of 9 3/31/2010

6 2010. As directed in the FERC Order that change was made effective July 13, This change was accepted by the FERC on September 12, /13/2007 Order 890 Reform 1-8,10,10A,11, 64A,80A,86A OA /13/2007 4/17/2008 On July 13, 2007, the Sierra Pacific Resources Operating Companies filed with the 13,15,16,19,22, 86B,109A,109B, FERC the OATT Compliance Filing making numerous changes to the OATT all 24,26-31,31A, 202A-202D, stemming from FERC Order 890. These were all direct compliance changes from that 33,34,41,46-51, 253A,257A-G order. All changes were effective July 13, 2007, as directed by the FERC in Order ,56,61,62,64, (18 sheets) On 4/17/08 the Commission conditionally accepted our Attachment C subject to us making a compliance filing 66,70,72,74,77-80,81,85,86,93-95, within 30 days (on Friday, May 16, 2008) to make requested changes. These changes are to correct certain 97,99-101,104,105,108,109,111,112, items and to add certain clarifications and explanations. We made that filing - which changed or added 15 tariff 115,118,120,129,166,168,178,182,205 sheets - on May 16, (71 sheets) 5/16/2007 Capacity-Based Network Service 1,7,12,16,60, 130A-130H ER /13/2007 7/13/2007 On May 16, 2007, the Nevada Companies filed revisions to their OATT that would 98,99,126,130 (8 sheets) implement an optional Capacity-Based Network Service ("CBNS") (9 sheets) 4/14/2007 Schedule 4 Energy Imbalance A none OA /13/2007 7/13/2007 Compliance with the Order No. 890 Optional Implementation FPA Section 205 filing Service and (8 sheets) guidelines. The Optional Implementation FPA Section 205 filing guidelines and Para. 139 Schedule 9 Generation C of the Final Rule allow previously approved variations to remain in effect subject to a Imbalance Service (7 sheets) demonstration that such variations continue to be consistent with or superior to the revised Final Rule pro forma OATT. This compliance filing preserved with minor modifications to update them for Order 890 requirements the Companies existing schedules as follows: - Schedule 4 Energy Imbalance Service, and - Schedule 9 Generation Imbalance Service. The minor modifications made to update them for Order 890 requirements were to add language to both schedules in order to conform to the reforms adopted in Order No. 890 regarding non-generation resources and double billing, and to Schedule 9 to provide for exceptions required for intermittent resources. On 7/13/07 the Commission accepted those changes, subject to us making a compliance filing within 30 days (which we made on August 14, 2007) to propose a mechanism to distribute imbalance charge revenues to non-offending customers. 12/6/2006 Housekeeping Changes to 200,204, none ER /5/2007 1/10/2007 The revisions are housekeeping in nature and consist of replacement of certain contact Update Company Contact 220,259 information in the OATT that needs to be updated to reflect current Company Information (4 sheets) responsibilities. The changes proposed are: Modification of the contact information on Sheet Numbers 200, 204, 220 and 259 to reflect the correct, current contact information. 9/12/2006 NAESB-WEQ Compliance Filing ER /24/2006 The purpose of this filing is two-fold: per Order No. 676 in 2,19,31 31A,31B,31C For Order to incorporate by reference certain standards promulgated by the Wholesale Electric Docket No. RM (3 sheets) (3 sheets) 676 changes: 7/1/2006 Quadrant ( WEQ ) of the North American Energy Standards Board ( NAESB ) in and Order No. 676 in Docket RM , and per Order No B in 486,487,488, 488A,488B, For Order to make modifications to the pro forma small generator interconnection study agreements Docket No. RM ,490,491, 488C,493A, 2006-B changes: 8/28/2006 and to correct the small generator interconnection agreement table of contents as outlined Page 6 of 9 3/31/2010

7 492,493,494, 493B,497A, in Order No B in Docket RM This refers to Attachment O, and we were 495,496,497, 497B required to file, per this order, new: 498,499,501, (7 sheets) 1. Feasibility Study Agreement, System Impact Study Agreement, (16 sheets) 3. Facilities Study Agreement, and 4. SGIA Article 1 Table of Contents. 4/4/2006 Housekeeping Changes to Direct 10A,67,68, 67A ER /5/2006 5/31/2006 The OATT revisions submitted by the Companies are housekeeping in nature consisting OATT Readers to the Companies' , (1 sheet) of the correction of an error, of minor formatting changes and of the replacement of OATiOASIS site for a list of current information in the OATT that must necessarily be up to- date and that can best be Eligible Customers & (16 sheets) maintained in a current form by providing Eligible Customers and Transmission Transmission Customers Customers directions in the OATT to the Companies OATIOASIS website. 1/13/2006 Filing to comply with the 432,433, 433B,433C ER /18/2006 2/27/2006 On January 13, 2006 OATT revisions were submitted to comply with Order No. 661-A requirements of Commission 433A (2 sheets) in FERC Docket No. RM issued December 12, 2005 and with Order No. 661: Order No. 661-A making changes (3 sheets) Interconnection for Wind Energy issued June 16, to the LGIP and LGIA to accommodate wind energy 8/12/2005 Compliance filing regarding Order 7,8,10A, 433A, ER /18/ /9/2005 A compliance filing was made to comply with the following three orders: No C, Order No. 2006, and , /12/ Order No C: Standardization of Generator Interconnection Agreements & Order No ,358,359,377 (59 sheets) 10/14/2005 Procedures issued June 16, 2005 in Docket No. RM Change made 403,410,412,416, effective as of July 18, , , 2. Order No. 2006: Standardization of Small Generator Interconnection Agreements & (73 sheets) Procedures issued May 12, 2005 in Docket No. RM Change made effective as of August 12, Order No. 661: Interconnection for Wind Energy issued June 2, 2005 in Docket No. RM Change made effective as of October 14, /15/2005 Filing in Compliance with 280,285, , ER /19/2005 4/14/2005 A compliance filing was made to comply with Commission Order No B issued Commission Order No B 302,306,308,312, December 20, 2004 in Docket No. RM ,315,325,328, 359,362,365,372,381,385,386,387, ,408,410,412,415,421 (32 sheets) 3/8/2005 Filing of a Settlement Agreement 186,189,190, ER /1/2005 5/6/2005 The filing of this Settlement Agreement resolves all disputed issues relating to SPR's in the General Rate Case for 244, October 1, 2004 tariff filing. Parties to the Settlement Agreement, dated March 7, 2005, Transmission Zone A (SPPC) (4 sheets with changes) include SPR, Truckee-Donner PUD, City of Fallon, Newmont and Barrick. 125,126 (2 sheets with new effective date) 10/1/2004 General Rate Case Zone A 125,126,186 ER /1/2005 5/6/2005 On October 1, 2004, the Sierra Pacific Resources Operating Companies filed at FERC 189,190,244 12/1/2004 (Original) to amend its Zone A rates for the following schedules: (6 sheets) Schedule 1 - Scheduling, System Control, and Dispatch Service, Page 7 of 9 3/31/2010

8 Schedule 7 - Long-Term Firm & Short-Term Firm Point-to-Point Transmission Service, Schedule 8 - Non Firm Point-to-Point Transmission Service, and Attachment H - Network Integration Transmission Service. The original effective date was December 1, 2004, but the FERC suspended the rate change until May 1, 2005 pending a settlement and/or hearing. In addition to the rate changes, this filing established a stated rate for Network Transmission Service ("NTS") instead of using a load ratio share of the Zone A revenue requirement. This was to simplify SPPC's rate structure and bring consistency to SPR's Tariff, as Zone B is billed on a stated rate. 7/20/2004 Compliance Filing regarding 74,74A, ER /5/2004 8/27/2004 Filing made in compliance with the Commission's Order issued July 2, 2004 in this Centennial Project extension 74B,74C Docket to revise Section 17.7 of the OATT. requests (4 sheets) 1/20/2004 Compliance Filing regarding 289,300,319, ER /26/2004 6/4/2004 By Commission Order on June 4, 2004, they accepted some of our changes and Variations from the pro forma 358,375,388, rejected others. On July 6, 2004 we made a Compliance Filing to make those changes Large Generator Interconnection 413, , required by the FERC. Procedures and Large Generator Interconnection Agreement (53 sheets for the April effective date) 7,146 1/20/2004 6/4/2004 (2 sheets for the January effective date) 5/12/2003 Settlement Agreement for All 9,10A,16,22,23, ER /1/2002 7/1/2003 This settlement agreement filing contained the following Issue s on the Tariff Sheets. Issues in Docket ER and 24,25,25A,31,54, ER and September 20, 2002: Tariff Sheets 187,188,190,191,192,197,198 (7 sheets) ER ,59,65,96,101, 1/1/2003 April 23, 2003: Tariff Sheets 16,244 (2 sheets) 102,145,165,167, April 4, 2003: All other changed tariff sheets filed (46 sheets) , , This settlement agreement filing contained the following Effective s on the Tariff Sheets. 244,258,259, January 1, 2003: Tariff Sheets 165,167, ,184,185, (20 sheets) (55 sheets) November 1, 2002: all other changed tariff sheets filed (35 sheets) 12/23/2002 Compliance Filing to Address 2,10A,22, 25A,268, ER /1/2002 7/1/2003 This compliance filing made required changes in the following areas: Issues in Commission's 23,24,25, 269, Load Curtailment 2. Indemnification November 21 Order in this Docket 125,227,233, (4 sheets) 3. Transmission Rights Allocation 4. Network Rate Design 234,244,258, 5. Retail Access Terms 6. Definition Change of On-Peak Period 261,262,263 (15 sheets) 10/11/2002 Revised Service Schedule Nos , ER /1/ /21/2002 Revised Service Schedule Nos. 1-7 to update Ancillary Services Rates and conform 1-7 to update Ancillary Services ER the Service Schedules with requirements of Order No. 614 Rates and conform the Service (27 sheets) ER Schedules with requirements of Order No /27/2002 Revised OATT in Anticipation of Lots Lots ER /1/ /21/2002 The Commission accepted the filing while requiring a compliance filing with changes and Commencement of Nevada setting certain issues for hearing. These revisions were filed to implement the limited Page 8 of 9 3/31/2010

9 Limited Retail Access retail access as provided in Nevada's A.B. 661 (effective July 17, 2001) and S.B. 211 This is the base OATT that is the basis for our current OATT; all (effective May 31, 2001). pages in the current OATT date from the OATT filed in this Docket in These original pages all have an issue date of September 20, /19/2000 Full Retail Access Changes Lots Lots ER /1/ /30/2000 This filing was made to implement retail access in Nevada pursuant to Nevada retail access legislation passed in However, in April of 2001 the State of Nevada repealed its retail access legislation. The Companies therefore filed to terminate the Tariff it had filed, and that the Commission had accepted, in order to implement retail access. The Commission accepted the requested termination on September 14, 2001, effective October 1, Page 9 of 9 3/31/2010