NorthWestern Energy South Dakota Electric Revenue Requirement Model Description. Schedule D-4

Transcription

1 NorthWestern Energy South Dakota Electric Revenue Requirement Model Description (1) Starting balance; () Major additions and retirements, including the following: (a) Month placed in service or retired from service; (b) Period of construction; (3) Other major transactions recorded, such as corrections or transfers in sufficient detail to disclose the nature of the major changes; () Closing balance. Any data required by this section which has been previously submitted to the commission by the utility may be incorporated by specific reference. Source: SDR 90, effective July 7, 1976; 1 SDR 151, 1 SDR 155, effective July 1, Law Implemented: SDCL 9-3A-10, 9-3A-1, 9-3A-1. Schedule D- 0:10:13:58. Schedule D- -- Plant account working papers for previous years. Schedule D- shall include a summary of the following by years with respect to the book changes in plant in service, account 101, for the last five calendar years of the operations of the company or its predecessors: General Authority: SDCL 9-3A-.

2 South Dakota Electric Rate Case Page 1 of 5 December 31, 010 Line Project Project Amount Construction In Service No. No. Description Addition Retirement Balance Start Date Date (a) (b) (c) (d) (e) (f) (g) 1 SD ELECTRIC PLANT BALANCE 1/31/009 1,377,51 3 Major Additions (Projects over $50,000): 5 6 PR NPS GO-Purch El Transformers Blanket 1,59,10 throughout 010 throughout PR HUR Red Trans Repl pole triple ckt 755,518 Jan-10 Aug-10 8 PR HUR Line #7 Reroute.5 mi. Hitch-Tulare 65,067 Jul-10 Dec-10 9 PR HUR Interconnect w/ East Highmore 0,5 Feb-09 Aug PR GENERATION - BIG STONE 39,773 throughout 010 throughout PR HUR Hitchcock Rebuild Substation 39,85 Feb-10 Dec-10 1 PR HUR GT Plant East 5 kv Reconductor - Phase 1 389,159 May-10 Sep PR ABN Rebuild Siebrecht to Melgaard Rd 317,96 Feb-10 Nov-10 1 PR ABN Elec-Cap Blnkt - Growth 95,636 throughout 010 throughout PR HUR Redfield Sub Clearance Correction 70,896 Feb-10 Aug PR Internal Production Yankton #3 58,51 Apr-10 Dec PR YNK Elec-Cap Blnkt-Growth 50,65 throughout 010 throughout Minor Additions 17,9, Major Retirements 0 3 Minor Retirements (5,189,13) Activity 3,686,97 (5,189,13) 6 7 Balance December 31, ,875,06

3 South Dakota Electric Rate Case Page of 5 December 31, 011 Line Project Project Amount Construction In Service No. No. Description Addition Retirement Balance Start Date Date (a) (b) (c) (d) (e) (f) (g) 1 SD ELECTRIC PLANT BALANCE 1/31/010 39,875,06 3 Major Additions (Projects over $50,000): 5 PR MIT Instl 115KV Letcher to Mitchell,89,110 May-09 Dec-11 6 PR MIT Trans Rebld/Upgrd MIT Sub 31A 3,719,7 Mar-10 Dec-11 7 PR Aberdeen Beef Plant 1,166,11 Jan-10 Dec GO-Purch El Transformers Blanket 96,399 throughout 011 throughout PR ABN Siebrecht Sub upgrade to 60 MVA 703,08 Apr-10 Jun PR HUR GT Plant East 5 kv Reconductor - Phase 675,01 May-10 Dec PR MIT Instl 115KV Letcher to Mitchell 606,375 May-09 Dec-11 1 PR ABN Indust Prk Upgr Trans to 0MVA 596,558 Mar-10 Mar PR ABN Siebrecht Sub upgrade to 60 MVA 516,603 Apr-10 Jun-11 1 PR YNK Freeman & Meridian Trans Upgrade 13,90 Apr-10 Apr PR Vehicle 03,777 Nov-11 Dec PR ABN Webster EREPC Tie 315,000 Sep-10 Apr PR HUR Watertown Muni Sub Equip Purchase 300,000 NA Dec Minor Additions 7,756, Major Retirements (over $50,000): 0 3 Minor Retirements (,37,58) Activity 3,011,075 (,37,58) 7 8 SD Electric Plant Balance 1/31/011 60,538,538

4 South Dakota Electric Rate Case Page 3 of 5 December 31, 01 Line Project Project Amount Construction In Service No. No. Description Addition Retirement Balance Start Date Date (a) (b) (c) (d) (e) (f) (g) 1 SD Electric Plant Balance 1/31/011 60,538,538 3 Major Additions (Projects over $50,000): 5 PR ABN AB# Siebrecht Sub 30C Upgrades 6,068,507 Jun-11 Dec-1 6 PR HUR Recon Line30 Siebrecht to Redfield 3,775,563 Jan-1 Nov Distribution Line Transformers Blanket Project 1,955,66 throughout 01 throughout 01 8 PR AB Peaker Gas Pipeline 1,931,97 Jul-11 Dec-1 9 PR YNK Hilltop Sub Rebld & Increase Capacity 1,876,81 Feb-11 Sep-1 10 PR BIG STONE Boiler Radiant Heater 1,515,97 Jun-09 May-1 11 PR BIG STONE DCS Controls 1,0,310 May-11 Jul-1 1 PR Coyote Stator Rewind Year 1 of 830,899 May-11 Nov-1 13 PR HUR Kampeska to Watertown Rebuild 8,705 Sep-11 Apr-1 1 PR Coyote Blanket Projects 796,9 throughout 01 throughout PR HUR GT Plant Sub 1.5kV Rebuild 688, Mar-11 Dec-1 16 PR MIT Trans Rebld/Upgrd MIT Sub 31A 67,659 Mar-10 Apr-1 17 PR Big Stone Blanket Projects 565,119 throughout 01 throughout PR Big Stone Repl Baghouse Bags & Cages 53,773 Jul-11 May-1 19 PR ABN Webster Substation Rebuild 509,595 Nov-10 Nov-1 0 PR MIT Platte Sub Replc Interconnect Tx 501,50 Feb-11 Apr-1 1 PR HUR GT Plant East 5 kv Reconductor 73,76 Sep-11 Feb-1 PR HUR Henry Sub 106F 6kV XFM Upgrade 60,799 Sep-11 Nov-1 3 PR HUR GT Plant Sub 3A 5kV XFM Upgrade 60,338 Sep-11 Oct-1 PR YNK Line 16 Rebuild (3.5kV) 5,83 Sep-11 May-1 5 PR Big Stone - Purchase Mobile Equipment 11,56 Feb-1 Jul GOH PURCHASE ELECTRIC METERS 07,0 throughout 01 throughout 01 7 PR Big Stone 13.8kV Switchgear Replacement 377,96 Dec-10 May-1 8 PR SDGEN Huron Gas Turbine Panel Replacement 375,776 Mar-11 May-1 9 PR HUR Highm/West Park 10/1.5/1 MVA Tx 358,787 Jul-11 Nov-1 30 PR MIT Chamb Circuit #1 Conver to 1.5kv 35,860 Feb-1 Sep-1 31 PR Big Stone Boiler Floor Overlay 30,905 Oct-11 May-1 3 PR Big Stone DCS Replacement 71,08 Mar-08 Jul-1 33 PR ABN West Main Alley OH to UG conversion 5,671 Feb-11 Dec Minor Additions 11,910, Major Retirements (over $50,000): 38 Big Stone boiler (,399,33) 39 Coyote Turbo Generator Units (78,56) 0 1 Minor Retirements (6,58,17) 3 December 31, 01 Test Year Totals 1,35,789 (9,60,076) 5 6 SD Electric Plant Balance 1/31/01 9,60,5

5 South Dakota Electric Rate Case Page of 5 December 31, 013 Line Project Project Amount Construction In Service Months to Rate Base FERC to No. No. Description Addition Retirement Balance Start Date Date Normalize Adjustment be adjusted (a) (b) (c) (d) (e) (f) (g) (h) (i) (j) 1 SD Electric Plant Balance 1/31/01 9,60,5 3 Major Additions (Projects over $50,000): 5 PR.1000 Aberdeen Generating Station # 6,930,8 Sep-08 Apr-13 6 PR Neal Scrubber & Baghouse 1,89,310 Jun-11 Dec-13 3,91, PR.1088 Transmission Line 30 Work ,86,937 Jan-13 Dec , PR Neal LP Turbine Replacement 1,95,8 Feb-1 Dec-13 3, PR EPA Mandated Diesel Engine Retrofit 1,309,97 Sep-1 Feb GOH PURCHASE DISTRIBUTION TRANS 1,30,56 throughout 013 throughout PR Neal Reheat Section Replacement 1,7,76 May-13 Dec , PR N Boiler Roof Replacement 1,19,708 Jan-1 Feb PR SDGen Huron # Fuel Control Upgrade 1,09,63 Jun-1 Oct , PR SD NE FLEET BUDGETED VEHICLES 899,769 throughout 013 throughout PR Neal Gen Scrubber SNCR Yr 1 of 799,850 Mar-13 Dec , PR Neal Generation Boiler Modification 617,378 Feb-13 Dec , PR Chamberlain City Sub 19B Work 511,6 Jan-13 Sep GOH PURCHASE ELECTRIC METERS 50,667 throughout 013 throughout PR Neal Generation GSU Replacement 58,5 Feb-13 Dec , PR ABN 10A Bristol Substation Rebuild 38,793 Feb-13 Nov-13 67, PR Neal Pri/Sec Air Heater Basket Replace 390,015 Feb-13 Dec , PR Coyote Station Heated Water Project 360,5 Feb-1 May-13 3 PR HUR Rebuild Lines for House Move Efficiency 316,1 Feb-1 Sep-13 PR ABN 9A Addl Circuit for Indust. Park 31,507 Sep-1 Oct-13 1, PR FMS SD MIT Amour Warehouse Project 307,018 Apr-13 Nov-13 7, PR YNK 6 Freeman 5kV Rebuild 97,398 Jan-13 Dec , PR MIT 86 Mitchell City Loop (Line 86) R 86,357 Jan-13 Nov-13, PR ABN Webster Distribution Rebuild 76,619 Feb-1 Dec , PR ABN 103C Andover Junction Sub TX Upgrade 6,85 Sep-13 Dec , PR HUR June Wind Storm 50,5 Jun-13 Dec , Minor Additions 7,3, Major Retirements (over $50,000): Retire Date 35 Coyote Turbo Generator Units (763,03) Nov-13 (117,390) BSP Boiler Plant Equipment (6,00) Jul Minor Retirements (5,7,63) 39 0 Transfers (3,87) 1 December 31, 013 Test Year Totals 9,056,170 (6,7,707) 3 SD Electric Plant Balance 1/31/ ,35,887 7,319,07

6 South Dakota Electric Rate Case Page 5 of 5 September 30, 01 Test Year Line Project Project Amount Construction In Service Months to Rate Base FERC to No. No. Description Addition Retirement Balance Start Date Date Normalize Adjustment be adjusted (a) (b) (c) (d) (e) (f) (g) (h) (i) (j) 1 SD Electric Plant Balance 1/31/ ,35,887 3 MAJOR ADDITIONS (PROJECTS OVER $50,000): 5 PR HUR Vayland Sub 35A & Conv of Wessington 1,,51 Nov-11 Jul , PR YNK Line 16 Rebuild (3.5kV) 3 of 6 870,761 Aug-1 May , PR Big Stone Gen Brine Waste Water Pond 60,165 Aug-1 Mar , PR Neal Scrubber & Baghouse 767,5 Jun-11 throughout 01 9 PR ABN OHPR GROTON 69KV REBUILD 5 MILES 53,891 Nov-13 Jun , PR Neal Blanket Projects 76,05 throughout 01 throughout PR Neal Gen Scrubber SNCR Yr 1 of 3,761 Mar-13 throughout 01 1 PR HUR Woonsocket Sub-Building 5,55 Apr-13 Aug , PR Neal Reheat Section Replacement 0,10 May-13 throughout Electric Meters Blanket Project 389,88 throughout 01 throughout Distribution Line Transformers Blanket Project 361,65 throughout 01 throughout PR MIT OHCU Ethan Rebuild and WYE 89,5 Dec-13 Jul-1 10, PR ABN SBFT BRISTOL JUNCTION TRANSFORMER 93,701 Feb-1 Sep , MINOR ADDITIONS 5,15,71 1 MAJOR RETIREMENTS (OVER $50,000): Retire Date 3 Neal 1981 Boiler Plant Equipment (70,) Feb-1 5 (180,86) MINOR RETIREMENTS (3,703,98) SEPTEMBER 30, 01 TEST YEAR TOTALS 1,53,986 (,17,6) SD Electric Plant Balance 9/30/01 588,70,67,806,76