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BPAT PPW NF MONTANA OATT BPAT.NWMT JEFF 2023-01-012023-09-30 C001789 ferc:FebruaryMember South Dakota Operations 2023-01-012023-09-30 C001789 Macquarie Energy, LLC AVA AVA NF MONTANA OATT COLSTRIP AVAT.NWMT 2023-01-012023-09-30 C001789 The Energy Authority BPAT WAPA NF MONTANA OATT BPAT.NWMT CROSSOVER 2023-01-012023-09-30 C001789 Rainbow Electric Marketing Corp. BPAT WAPA NF MONTANA OATT BPAT.NWMT CROSSOVER 2023-01-012023-09-30 C001789 Bonneville Power Administration BPA  Bonneville Power Administration FNO Montana OATT BPAT.NWMT    Various in Montana 2023-01-012023-09-30 C001789 ferc:GeneralPlantMemberferc:ElectricUtilityMember 2023-01-012023-09-30 C001789 Asset Retirement Obligation (South Dakota) 2023-07-012023-09-30 C001789 ferc:SeptemberMember Montana Operations 2023-01-012023-09-30 C001789 Natural Gas Regulatory Deferrals (Montana) 2023-09-30 C001789 Property Tax Tracker (Montana) - Docket 2017.11.86 - Order 7580a; Annual Amortization 2023-07-012023-09-30 C001789 EDF Trading North America, LLC NWMT NWMT NF MONTANA OATT NWMTIMBALANC NWMT.SYSTEM 2023-01-012023-09-30 C001789 Deferred Gas Storage Sales (Montana) - Docket D2001.1.1; Amortization 2001 - 2039 2023-07-012023-09-30 C001789 Pension Plan (South Dakota) 2023-09-30 C001789 Excess Deferred Income Taxes (South Dakota) 2023-01-012023-09-30 C001789 Idaho Power Company PPW IPCO NF MONTANA OATT JEFF TNDY 2023-01-012023-09-30 C001789 Guzman Energy, LLC PPW BPAT NF MONTANA OATT YTP BPAT.NWMT 2023-01-012023-09-30 C001789 Powerex Corporation PPW BPAT NF MONTANA OATT BRDY BPAT.NWMT 2023-01-012023-09-30 C001789 Morgan Stanley Capital Group, Inc. WAUW NWMT NF MONTANA OATT GREATFALLS MATL.NWMT 2023-01-012023-09-30 C001789 Atlas Power, LLC Portland General Electric Atlas Power, LLC FNO Montana OATT Colstrip Butte, MT 2023-01-012023-09-30 C001789 Calumet Refining, LLC Talen Energy Calumet Montana Refining Company, Inc. FNO Montana OATT Colstrip Great Falls, MT 2023-01-012023-09-30 C001789 Field Inventory (South Dakota) - Docket EL 14-106 2023-09-30 C001789 Excess Deferred Income Taxes (South Dakota) 2023-07-012023-09-30 C001789 ferc:OtherUtilityMember 2023-09-30 C001789 Morgan Stanley Capital Group, Inc. GWA PPW SFP MONTANA OATT GLWND1 BRDY 2023-01-012023-09-30 C001789 Morgan Stanley Capital Group, Inc. BPAT GWA NF MONTANA OATT BPAT.NWMT GLWND2 2023-01-012023-09-30 C001789 Energy Keepers Inc. NWMT AVA NF MONTANA OATT KERR AVAT.NWMT 2023-01-012023-09-30 C001789 The Energy Authority AVA PPW NF MONTANA OATT AVAT.NWMT BRDY 2023-01-012023-09-30 C001789 Montana Public Service Commission (Montana) - Docket 2017.9.78 - Order 7568 2023-06-30 C001789 Amortization of 2023-01-012023-09-30 C001789 MONTANA CHOICE TRANSMISSION      2023-01-012023-09-30 C001789 Flow-through Income Taxes (Montana) 2023-01-012023-09-30 C001789 2021-12-31 C001789 ferc:ElectricUtilityMember 2022-01-012022-09-30 C001789 Montana Consumer Counsel Tax (Montana) - Docket 2018.10.67 - Order 7637 2023-01-012023-09-30 C001789 Powerex Corporation AVA NWMT NF MONTANA OATT AVAT.NWMT MATL.NWMT 2023-01-012023-09-30 C001789 Powerex Corporation BPAT WAPA NF MONTANA OATT BPAT.NWMT CROSSOVER 2023-01-012023-09-30 C001789 Western Area Power Administration WAPA NWMT SFP MONTANA OATT GREATFALLS NWMT.SYSTEM 2023-01-012023-09-30 C001789 Supply: 2023-01-012023-09-30 C001789 CTC QF Over/Under Collections (Montana) - Docket 97.9.90 and Docket 2001.1.15; Annual Amortization 2023-06-30 C001789 Manufactured Gas Plants (South Dakota) - Docket NG 11-003 2023-07-012023-09-30 C001789 Dynasty Power Inc. NWMT NWMT NF MONTANA OATT COLSTRIP GTFALLSNWMT 2023-01-012023-09-30 C001789 CP Energy Marketing (US) Inc. BPAT NWMT NF MONTANA OATT BPAT.NWMT NWMT.SYSTEM 2023-01-012023-09-30 C001789 Southwester Power Pool (MT) FNS 2023-01-012023-09-30 C001789 ferc:JuneMember South Dakota Operations 2023-01-012023-09-30 C001789 Great Falls Public Schools Energy Keepers Inc. Great Falls Public Schools FNO Montana OATT Kerr Great Falls, MT 2023-01-012023-09-30 C001789 Energy Keepers Inc. NWMT BPAT SFP MONTANA OATT KERR BPAT.NWMT 2023-01-012023-09-30 C001789 Asset Retirement Obligation (Montana) 2023-07-012023-09-30 C001789 Macquarie Energy, LLC NWMT BPAT SFP MONTANA OATT CANYONFERRY BPAT.NWMT 2023-01-012023-09-30 C001789 Flow-through Income Taxes (South Dakota) 2023-09-30 C001789 Morgan Stanley Capital Group, Inc. BPAT PPW NF MONTANA OATT BPAT.NWMT JEFF 2023-01-012023-09-30 C001789 Morgan Stanley Capital Group, Inc. GWA NWMT NF MONTANA OATT GLWND2 NWMT.SYSTEM 2023-01-012023-09-30 C001789 2023-01-012023-06-30 C001789 South Dakota Operations 2023-01-012023-09-30 C001789 ferc:OtherUtility3Member 2023-09-30 C001789 Transalta Energy Marketing (US) Inc. WAPA BPAT NF MONTANA OATT CROSSOVER BPAT.NWMT 2023-01-012023-09-30 C001789 Sun River Elect Coop OLF 2023-01-012023-09-30 C001789 Town of Philipsburg Town of Philipsburg Town of Philipsburg FNO Montana OATT Philipsburg Substation Philipsburg, MT 2023-01-012023-09-30 C001789 BPA Residential Exchange Program (Montana) - Docket 2018.8.49 Order 7630; Annual Amortization 2023-09-30 C001789 ferc:AprilMember Montana Operations 2023-01-012023-09-30 C001789 Morgan Stanley Capital Group, Inc. GWA NWMT SFP MONTANA OATT GLWND1 MATL.NWMT 2023-01-012023-09-30 C001789 Phillips 66 Energy Trading, LLC BPAT NWMT NF MONTANA OATT BPAT.NWMT GTFALLSNWMT 2023-01-012023-09-30 C001789 Southwest Power Pool (SPP) SPP Various LFP SCH 7 Various Various 2023-01-012023-09-30 C001789 Western Area Power Administration WAPA WAPA NF MONTANA OATT CROSSOVER GREATFALLS 2023-01-012023-09-30 C001789 ferc:AugustMember Montana Operations 2023-01-012023-09-30 C001789 Rainbow Electric Marketing Corp. PPW WAPA NF MONTANA OATT YTP CROSSOVER 2023-01-012023-09-30 C001789 Excess Deferred Income Taxes (Montana) 2023-06-30 C001789 Macquarie Energy, LLC NWMT AVA NF MONTANA OATT CANYONFERRY AVAT.NWMT 2023-01-012023-09-30 C001789 Morgan Stanley Capital Group, Inc. BPAT NWMT NF MONTANA OATT BPAT.NWMT MATL.NWMT 2023-01-012023-09-30 C001789 Morgan Stanley Capital Group, Inc. PPW BPAT SFP MONTANA OATT BRDY BPAT.NWMT 2023-01-012023-09-30 C001789 Rainbow Electric Marketing Corp. BPAT NWMT NF MONTANA OATT BPAT.NWMT MATL.NWMT 2023-01-012023-09-30 C001789 Guzman Energy, LLC PPW AVA SFP MONTANA OATT BRDY AVAT.NWMT 2023-01-012023-09-30 C001789 Excess Deferred Income Taxes (Montana) 2023-07-012023-09-30 C001789 Unbilled Revenues (South Dakota) 2023-07-012023-09-30 C001789 ferc:ElectricUtilityMember 2023-01-012023-09-30 C001789 Basin Electric Power Cooperative BPAT WAPA NF MONTANA OATT BPAT.NWMT GREATFALLS 2023-01-012023-09-30 C001789 SOUTH DAKOTA      2023-01-012023-09-30 C001789 ferc:Quarter1Member Montana Operations 2023-01-012023-09-30 C001789 Phillips 66 Energy Trading, LLC AVA NWMT NF MONTANA OATT AVAT.NWMT GTFALLSNWMT 2023-01-012023-09-30 C001789 Energy Keepers Inc. NWMT PACE LFP MONTANA OATT KERR BRDY 2023-01-012023-09-30 C001789 Transalta Energy Marketing (US) Inc. BPAT NWMT NF MONTANA OATT BPAT.NWMT MATL.NWMT 2023-01-012023-09-30 C001789 Puget Sound Energy Marketing NWMT BPAT SFP MONTANA OATT COLSTRIP BPAT.NWMT 2023-01-012023-09-30 C001789 ferc:Quarter3Member Montana Operations 2023-01-012023-09-30 C001789 Energy Keepers Inc. NWMT PACE SFP MONTANA OATT KERR BRDY 2023-01-012023-09-30 C001789 Beartooth Electric Cooperative, Inc. WAPA & Energy Keepers Inc. Beartooth Electric Cooperative, Inc. FNO Montana OATT Fort Peck & Kerr Various in Montana 2023-01-012023-09-30 C001789 Dynasty Power Inc. AVA PPW NF MONTANA OATT AVAT.NWMT JEFF 2023-01-012023-09-30 C001789 Morgan Stanley Capital Group, Inc. NWMT NWMT SFP MONTANA OATT COLSTRIP MATL.NWMT 2023-01-012023-09-30 C001789 Pension Plan (Montana) 2023-09-30 C001789 Morgan Stanley Capital Group, Inc. NWMT GWA NF MONTANA OATT HARDIN GLWND1 2023-01-012023-09-30 C001789 Morgan Stanley Capital Group, Inc. GWA NWMT NF MONTANA OATT GLWND2 MATL.NWMT 2023-01-012023-09-30 C001789 Treasury Stock Activity 2023-01-012023-09-30 C001789 Talen Montana, LLC Avista Energy Colstrip Steam Electric Station FNO Montana OATT Colstrip Nichols Pump Sub 2023-01-012023-09-30 C001789 MAG Energy Solutions NWMT PACE NF MONTANA OATT MATL.NWMT BRDY 2023-01-012023-09-30 C001789 Mercuria Energy America, LLC PPW WAPA NF MONTANA OATT BRDY CROSSOVER 2023-01-012023-09-30 C001789 Transalta Energy Marketing (US) Inc. BPAT PPW NF MONTANA OATT BPAT.NWMT BRDY 2023-01-012023-09-30 C001789 Guzman Energy, LLC BPAT PPW NF MONTANA OATT BPAT.NWMT BRDY 2023-01-012023-09-30 C001789 Powerex Corporation BPAT PPW LFP MONTANA OATT BPAT.NWMT JEFF 2023-01-012023-09-30 C001789 Morgan Stanley Capital Group, Inc. NWMT PACE NF MONTANA OATT MATL.NWMT JEFF 2023-01-012023-09-30 C001789 Excess Deferred Income Taxes (South Dakota) 2023-01-012023-09-30 C001789 Energy Keepers Inc. 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NWMT BPAT NF MONTANA OATT MATL.NWMT BPAT.NWMT 2023-01-012023-09-30 C001789 ferc:CommonUtilityMember 2023-09-30 C001789 Sibanye-Stillwater Various Stillwater Mining Company FNO Montana OATT As Available Various in Montana 2023-01-012023-09-30 C001789 Basin Electric Power Cooperative WAPA WAPA LFP MONTANA OATT CROSSOVER GREATFALLS 2023-01-012023-09-30 C001789 ferc:SteamProductionPlantMemberferc:ElectricUtilityMember 2023-01-012023-09-30 C001789 Morgan Stanley Capital Group, Inc. NWMT GWA NF MONTANA OATT HARDIN GLWND2 2023-01-012023-09-30 C001789 ferc:JulyMember South Dakota Operations 2023-01-012023-09-30 C001789 Other 2023-01-012023-09-30 C001789 Morgan Stanley Capital Group, Inc. NWMT NWMT NF MONTANA OATT COLSTRIP MATL.NWMT 2023-01-012023-09-30 C001789 Big Horn County Electric Coop. Inc. WAPA Big Horn County Electric Coop. Inc. FNO Montana OATT Various & Great Falls  Various in Montana 2023-01-012023-09-30 C001789 Basin Creek Capital Lease (Montana) 2023-07-012023-09-30 C001789 Montana Public Service Commission Consumer Counsel Taxes (Montana) - Dockets 2017.9.78 and 2018.10.67 2023-07-012023-09-30 C001789 Excess Deferred Income Taxes (South Dakota) 2023-06-30 C001789 CP Energy Marketing (US) Inc. BPAT NWMT NF MONTANA OATT BPAT.NWMT MATL.NWMT 2023-01-012023-09-30 C001789 Guzman Energy, LLC PPW NWMT NF MONTANA OATT YTP NWMT.SYSTEM 2023-01-012023-09-30 C001789 Idaho Power Company AVA PPW NF MONTANA OATT AVAT.NWMT MLCK 2023-01-012023-09-30 C001789 Rainbow Electric Marketing Corp. WAPA PPW NF MONTANA OATT CROSSOVER YTP 2023-01-012023-09-30 C001789 Common Stock Dividend 2022-01-012022-09-30 C001789 Transalta Energy Marketing (US) Inc. AVA WAPA NF MONTANA OATT AVAT.NWMT CROSSOVER 2023-01-012023-09-30 C001789 Montana Operations 2023-01-012023-09-30 C001789 Ash Grove Cement Energy Keepers Inc. Ash Grove Cement FNO Montana OATT Kerr Clancy, MT 2023-01-012023-09-30 C001789 Phillips 66 Company Shell Energy Phillips 66 Company FNO Montana OATT BPAT.NWMT Various in Montana 2023-01-012023-09-30 C001789 CHS, Inc. Morgan Stanley CHS, Inc. FNO Montana OATT MATL.NWMT & BPAT.NWMT Various in Montana 2023-01-012023-09-30 C001789 Montana Public Service Commission (Montana) - Docket 2017.9.78 - Order 7568 2023-09-30 C001789 Morgan Stanley Capital Group, Inc. GWA PPW NF MONTANA OATT GLWND2 BRDY 2023-01-012023-09-30 C001789 ScheduleTransmissionOfElectricityByIsoOrRtoAbstract 2023-01-012023-09-30 C001789 Energy Keepers Inc. NWMT BPAT NF MONTANA OATT KERR BPAT.NWMT 2023-01-012023-09-30 C001789 Morgan Stanley Capital Group, Inc. WAPA AVA NF MONTANA OATT GREATFALLS AVAT.NWMT 2023-01-012023-09-30 C001789 2023-01-012023-09-30 C001789 SOUTH DAKOTA 2023-01-012023-09-30 C001789 Barretts Minerals, Inc. Energy Keepers inc. Barretts Minerals, Inc. FNO Montana OATT Kerr Dillon, MT 2023-01-012023-09-30 C001789 Energy Keepers Inc. AVA PPW NF MONTANA OATT AVAT.NWMT ANTE 2023-01-012023-09-30 C001789 Seattle City Light NF 2023-01-012023-09-30 C001789 The Energy Authority BPAT NWMT NF MONTANA OATT BPAT.NWMT NWMT.SYSTEM 2023-01-012023-09-30 C001789 Guzman Energy, LLC PPW BPAT SFP MONTANA OATT YTP BPAT.NWMT 2023-01-012023-09-30 C001789 Portland General Electric Company AVA AVA NF MONTANA OATT COLSTRIP AVAT.NWMT 2023-01-012023-09-30 C001789 Asset Retirement Obligation (Montana) 2023-09-30 C001789 Morgan Stanley Capital Group, Inc. NWMT BPAT NF MONTANA OATT COLSTRIP BPAT.NWMT 2023-01-012023-09-30 C001789 Energy Keepers Inc. 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WAPA PPW NF MONTANA OATT CROSSOVER YTP 2023-01-012023-09-30 C001789 FAS 106 (Montana) - Docket 93.6.24 and Docket 2009.9.129 2023-06-30 C001789 Excess Deferred Income Taxes (Montana) 2023-09-30 C001789 Powerex Corporation WAPA PPW NF MONTANA OATT CROSSOVER YTP 2023-01-012023-09-30 C001789 Rainbow Electric Marketing Corp. PPW BPAT NF MONTANA OATT YTP BPAT.NWMT 2023-01-012023-09-30 C001789 FAS 106 (Montana) - Docket 93.6.24 and Docket 2009.9.129 2023-01-012023-09-30 C001789 Morgan Stanley Capital Group, Inc. BPAT GWA NF MONTANA OATT BPAT.NWMT GLWND1 2023-01-012023-09-30 C001789 Morgan Stanley Capital Group, Inc. NWMT GWA NF MONTANA OATT MATL.NWMT GLWND1 2023-01-012023-09-30 C001789 Line Interconnection Studiesferc:TransmissionStudiesMember 2023-01-012023-09-30 C001789 EDF Trading North America, LLC BPAT NWMT NF MONTANA OATT BPAT.NWMT NWMT.SYSTEM 2023-01-012023-09-30 C001789 Morgan Stanley Capital Group, Inc. 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GWA AVA NF MONTANA OATT GLWND2 AVAT.NWMT 2023-01-012023-09-30 C001789 Aspen Air U.S., LLC Talen Energy Aspen Air Corporation FNO Montana OATT Colstrip  Billings, MT 2023-01-012023-09-30 C001789 Current Ad Valorem True-Up (South Dakota) - Docket GE98-001 2023-01-012023-09-30 C001789 Deferred Gas Storage Sales (Montana) - Docket D2001.1.1; Amortization 2001 - 2039 2023-09-30 C001789 Transalta Energy Marketing (US) Inc. BPAT PPW NF MONTANA OATT BPAT.NWMT YTP 2023-01-012023-09-30 C001789 Day Ahead & Real Time Admin 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. NWMT PACE NF MONTANA OATT MATL.NWMT BRDY 2023-01-012023-09-30 C001789 ferc:HydraulicProductionPlantConventionalMemberferc:ElectricUtilityMember 2023-01-012023-09-30 C001789 Powerex Corporation AVA PPW NF MONTANA OATT AVAT.NWMT BRDY 2023-01-012023-09-30 C001789 Montana Resources Energy Keepers, Inc. 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Talen Energy Par Pacific Holdings, Inc. 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BPAT NWMT NF MONTANA OATT BPAT.NWMT MATL.NWMT 2023-01-012023-09-30 C001789 SD Gas Rate Refund 2023-01-012023-09-30 C001789 Optional Studiesferc:GenerationStudiesMember 2023-01-012023-09-30 C001789 ferc:MayMember South Dakota Operations 2023-01-012023-09-30 C001789 Current Ad Valorem True-Up (South Dakota) - Docket GE98-001 2023-09-30 C001789 Excess Deferred Income Taxes (South Dakota) 2023-09-30 C001789 Southwest Power Pool (SPP) SPP Various NF SCH 8 Various Various 2023-01-012023-09-30 C001789 Guzman Energy, LLC PPW WAPA NF MONTANA OATT YTP CROSSOVER 2023-01-012023-09-30 C001789 Natural Gas Transmission Verification Program (Montana) - Docket D2016.11.88 2023-07-012023-09-30 C001789 EDF Trading North America, LLC BPAT NWMT NF MONTANA OATT BPAT.NWMT COLSTRIP 2023-01-012023-09-30 C001789 Dynasty Power Inc. NWMT NWMT NF MONTANA OATT COLSTRIP NWMT.SYSTEM 2023-01-012023-09-30 C001789 Other Noncash Charges to Income, Net 2023-01-012023-09-30 C001789 Pension Plan (South Dakota) 2023-06-30 C001789 2022-09-30 C001789 REC Silicon Company Morgan Stanley REC Silicon Company FNO Montana OATT Hardin  Butte, MT 2023-01-012023-09-30 C001789 The Energy Authority BPAT PPW NF MONTANA OATT BPAT.NWMT JEFF 2023-01-012023-09-30 C001789 Roseburg Forest Products Company Shell Energy Roseburg Forest Products Company FNO Montana OATT BPAT.NWMT Missoula, MT 2023-01-012023-09-30 C001789 CTC QF Over/Under Collections (Montana) - Docket 97.9.90 and Docket 2001.1.15; Annual Amortization 2023-09-30 C001789 Transalta Energy Marketing (US) Inc. BPAT WAPA NF MONTANA OATT BPAT.NWMT CROSSOVER 2023-01-012023-09-30 C001789 Morgan Stanley Capital Group, Inc. GWA PPW NF MONTANA OATT GLWND2 JEFF 2023-01-012023-09-30 C001789 ferc:CommonPlantElectricMemberferc:ElectricUtilityMember 2023-01-012023-09-30 C001789 BPA Residential Exchange Program (Montana) - Docket 2018.8.49 Order 7630; Annual Amortization 2023-01-012023-09-30 C001789 Brookfield Renewable Trading and Marketing LP BPAT WAPA NF MONTANA OATT BPAT.NWMT CROSSOVER 2023-01-012023-09-30 C001789 MAG Energy Solutions PACE NWMT NF MONTANA OATT BRDY MATL.NWMT 2023-01-012023-09-30 C001789 Guzman Energy, LLC PPW BPAT SFP MONTANA OATT BRDY BPAT.NWMT 2023-01-012023-09-30 C001789 The Energy Authority WAPA PPW NF MONTANA OATT CROSSOVER JEFF 2023-01-012023-09-30 C001789 Other 2022-01-012022-09-30 C001789 ScheduleRegionalTransmissionServiceRevenuesAbstract 2023-01-012023-09-30 C001789 Natural Gas Transmission Verification Program (Montana) - Docket D2016.11.88 2023-09-30 C001789 Compensated Absences (Montana) - Docket 97.11.219 2023-01-012023-09-30 C001789 Morgan Stanley Capital Group, Inc. NWMT BPAT NF MONTANA OATT MATL.NWMT BPAT.NWMT 2023-01-012023-09-30 C001789 Excess Deferred Income Taxes (Montana) 2023-06-30 C001789 Tax Cut Jobs Act Deferral (South Dakota) - Docket NG-0095 and GE17-003 2023-06-30 C001789 Unbilled Revenues (South Dakota) 2023-06-30 C001789 Other 2022-01-012022-09-30 C001789 EDF Trading North America, LLC NWMT NWMT NF MONTANA OATT CROOKEDFALLS NWMT.SYSTEM 2023-01-012023-09-30 C001789 ferc:DistributionPlantMemberferc:ElectricUtilityMember 2023-01-012023-09-30 C001789 Portland General Electric Company NWMT NWMT NF MONTANA OATT COLSTRIP MATL.NWMT 2023-01-012023-09-30 C001789 Deferred Gas Storage Sales (Montana) - Docket D2001.1.1; Amortization 2001 - 2039 2023-06-30 C001789 Morgan Stanley Capital Group, Inc. NWMT NWMT SFP MONTANA OATT COLSTRIP NWMT.SYSTEM 2023-01-012023-09-30 C001789 Excess Deferred Income Taxes (Montana) 2023-09-30 C001789 Morgan Stanley Capital Group, Inc. GWA PPW NF MONTANA OATT GLWND1 JEFF 2023-01-012023-09-30 C001789 South Dakota Operationsferc:Quarter2Member 2023-01-012023-09-30 C001789 Montana Public Service Commission Consumer Counsel Taxes (Montana) - Dockets 2017.9.78 and 2018.10.67 2023-06-30 C001789 Basin Electric Power Cooperative WAPA WAPA NF MONTANA OATT CROSSOVER GREATFALLS 2023-01-012023-09-30 C001789 Property Tax Tracker (Montana) - Docket 2017.11.86 - Order 7580a; Annual Amortization 2023-01-012023-09-30 C001789 Basin Electric Power Cooperative Morgan Stanley, WAPA Basin Electric Power Cooperative FNO Montana OATT Various in Montana Various NWMT & WAUW 2023-01-012023-09-30 C001789 Montana Public Service Commission Consumer Counsel Taxes (Montana) - Dockets 2017.9.78 and 2018.10.67 2023-01-012023-09-30 C001789 Amortization of 2022-01-012022-09-30 C001789 Common Stock Dividend 2023-01-012023-09-30 C001789 Flow-through Income Taxes (Montana) 2023-07-012023-09-30 C001789 Property Tax Tracker (Montana) - Docket 2017.11.86 - Order 7580a; Annual Amortization 2023-01-012023-09-30 C001789 Other Noncash Charges to Income, Net 2022-01-012022-09-30 C001789 Basin Creek Capital Lease (Montana) 2023-01-012023-09-30 C001789 EDF Trading North America, LLC NWMT BPAT NF MONTANA OATT COLSTRIP BPAT.NWMT 2023-01-012023-09-30 C001789 BPA Residential Exchange Program (Montana) - Docket 2018.8.49 Order 7630; Annual Amortization 2023-06-30 C001789 ferc:GasUtilityMember 2023-09-30 C001789 LANGFORD, CITY OF WAPA LANGFORD LFP VOL 2 HURON 115 KV BUS LANGFORD 12.5 KV 2023-01-012023-09-30 C001789 Investment in Equity Securities 2023-01-012023-09-30 C001789 Western Area Power Administration WAUW NWMT SFP MONTANA OATT GREATFALLS GTFALLSNWMT 2023-01-012023-09-30 C001789 Powerex Corporation BPAT AVA NF MONTANA OATT BPAT.NWMT AVAT.NWMT 2023-01-012023-09-30 C001789 Montana Public Service Commission (Montana) - Docket 2017.9.78 - Order 7568 2023-01-012023-09-30 C001789 Morgan Stanley Capital Group, Inc. NWMT NWMT NF MONTANA OATT HARDIN NWMT.SYSTEM 2023-01-012023-09-30 C001789 GROTON, CITY OF WAPA GROTON LFP VOL 2 HURON 115 KV BUS GROTON 69 KV 2023-01-012023-09-30 C001789 South Dakota Operationsferc:AprilMember 2023-01-012023-09-30 C001789 Basin Electric Power Cooperative PPW WAPA NF MONTANA OATT YTP GREATFALLS 2023-01-012023-09-30 C001789 Current Ad Valorem True-Up (South Dakota) - Docket GE98-001 2023-07-012023-09-30 C001789 Morgan Stanley Capital Group, Inc. GWA NWMT NF MONTANA OATT GLWND1 MATL.NWMT 2023-01-012023-09-30 C001789 Field Inventory (South Dakota) - Docket EL 14-106 2023-01-012023-09-30 C001789 Altop Energy Trading LLC PPW WAPA NF MONTANA OATT BRDY CROSSOVER 2023-01-012023-09-30 C001789 Naturener Power Watch, LLC NWMT PACE NF MONTANA OATT HORSESHOE JEFF 2023-01-012023-09-30 C001789 The Energy Authority WAPA BPAT NF MONTANA OATT CROSSOVER BPAT.NWMT 2023-01-012023-09-30 C001789 Asset Retirement Obligation (South Dakota) 2023-09-30 C001789 Rounding 2023-01-012023-09-30 C001789 Deferred Gas Storage Sales (Montana) - Docket D2001.1.1; Amortization 2001 - 2039 2023-01-012023-09-30 C001789 Portland General Electric Company NWMT PPW NF MONTANA OATT COLSTRIP BRDY 2023-01-012023-09-30 C001789 Powerex Corporation BPAT PPW NF MONTANA OATT BPAT.NWMT YTP 2023-01-012023-09-30 C001789 Investment in Equity Securities 2022-01-012022-09-30 C001789 Avista Corporation AVA AVA NF MONTANA OATT COLSTRIP AVAT.NWMT 2023-01-012023-09-30 C001789 Morgan Stanley Capital Group, Inc. AVA GWA NF MONTANA OATT AVAT.NWMT GLWND2 2023-01-012023-09-30 C001789 Manufactured Gas Plants (South Dakota) - Docket NG 11-003 2023-01-012023-09-30 C001789 Morgan Stanley Capital Group, Inc. BPAT NWMT NF MONTANA OATT BPAT.NWMT NWMT.SYSTEM 2023-01-012023-09-30 C001789 FAC Studiesferc:TransmissionStudiesMember 2023-01-012023-09-30 C001789 Avista Corporation AVA AVA SFP MONTANA OATT COLSTRIP AVAT.NWMT 2023-01-012023-09-30 C001789 Natural Gas Transmission Verification Program (Montana) - Docket D2016.11.88 2023-01-012023-09-30 utr:MW xbrli:pure iso4217:USD ns:year utr:MWh
THIS FILING IS
Item 1:
An Initial (Original) Submission
OR
Resubmission No.

FERC FINANCIAL REPORT
FERC FORM No. 1: Annual Report of
Major Electric Utilities, Licensees
and Others and Supplemental
Form 3-Q: Quarterly Financial Report

These reports are mandatory under the Federal Power Act, Sections 3, 4(a), 304 and 309, and 18 CFR 141.1 and 141.400. Failure to report may result in criminal fines, civil penalties and other sanctions as provided by law. The Federal Energy Regulatory Commission does not consider these reports to be of confidential nature
Exact Legal Name of Respondent (Company)

NorthWestern Corporation
Year/Period of Report

End of:
2023
/
Q3


INSTRUCTIONS FOR FILING FERC FORM NOS. 1 and 3-Q

GENERAL INFORMATION

  1. Purpose

    FERC Form No. 1 (FERC Form 1) is an annual regulatory requirement for Major electric utilities, licensees and others (18 C.F.R. § 141.1). FERC Form No. 3-Q ( FERC Form 3-Q) is a quarterly regulatory requirement which supplements the annual financial reporting requirement (18 C.F.R. § 141.400). These reports are designed to collect financial and operational information from electric utilities, licensees and others subject to the jurisdiction of the Federal Energy Regulatory Commission. These reports are also considered to be non-confidential public use forms.
  2. Who Must Submit

    Each Major electric utility, licensee, or other, as classified in the Commission’s Uniform System of Accounts Prescribed for Public Utilities, Licensees, and Others Subject To the Provisions of The Federal Power Act (18 C.F.R. Part 101), must submit FERC Form 1 (18 C.F.R. § 141.1), and FERC Form 3-Q (18 C.F.R. § 141.400).

    Note: Major means having, in each of the three previous calendar years, sales or transmission service that exceeds one of the following:
    1. one million megawatt hours of total annual sales,
    2. 100 megawatt hours of annual sales for resale,
    3. 500 megawatt hours of annual power exchanges delivered, or
    4. 500 megawatt hours of annual wheeling for others (deliveries plus losses).
  3. What and Where to Submit

    1. Submit FERC Form Nos. 1 and 3-Q electronically through the eCollection portal at https://eCollection.ferc.gov, and according to the specifications in the Form 1 and 3-Q taxonomies.
    2. The Corporate Officer Certification must be submitted electronically as part of the FERC Forms 1 and 3-Q filings.
    3. Submit immediately upon publication, by either eFiling or mail, two (2) copies to the Secretary of the Commission, the latest Annual Report to Stockholders. Unless eFiling the Annual Report to Stockholders, mail the stockholders report to the Secretary of the Commission at:
      Secretary
      Federal Energy Regulatory Commission 888 First Street, NE
      Washington, DC 20426
    4. For the CPA Certification Statement, submit within 30 days after filing the FERC Form 1, a letter or report (not applicable to filers classified as Class C or Class D prior to January 1, 1984). The CPA Certification Statement can be either eFiled or mailed to the Secretary of the Commission at the address above.

      The CPA Certification Statement should:
      1. Attest to the conformity, in all material aspects, of the below listed (schedules and pages) with the Commission's applicable Uniform System of Accounts (including applicable notes relating thereto and the Chief Accountant's published accounting releases), and
      2. Be signed by independent certified public accountants or an independent licensed public accountant certified or licensed by a regulatory authority of a State or other political subdivision of the U. S. (See 18 C.F.R. §§ 41.10-41.12 for specific qualifications.)

        Schedules
        Pages
        Comparative Balance Sheet 110-113
        Statement of Income 114-117
        Statement of Retained Earnings 118-119
        Statement of Cash Flows 120-121
        Notes to Financial Statements 122-123
    5. The following format must be used for the CPA Certification Statement unless unusual circumstances or conditions, explained in the letter or report, demand that it be varied. Insert parenthetical phrases only when exceptions are reported.

      “In connection with our regular examination of the financial statements of [COMPANY NAME] for the year ended on which we have reported separately under date of [DATE], we have also reviewed schedules [NAME OF SCHEDULES] of FERC Form No. 1 for the year filed with the Federal Energy Regulatory Commission, for conformity in all material respects with the requirements of the Federal Energy Regulatory Commission as set forth in its applicable Uniform System of Accounts and published accounting releases. Our review for this purpose included such tests of the accounting records and such other auditing procedures as we considered necessary in the circumstances.

      Based on our review, in our opinion the accompanying schedules identified in the preceding paragraph (except as noted below) conform in all material respects with the accounting requirements of the Federal Energy Regulatory Commission as set forth in its applicable Uniform System of Accounts and published accounting releases.” The letter or report must state which, if any, of the pages above do not conform to the Commission’s requirements. Describe the discrepancies that exist.
    6. Filers are encouraged to file their Annual Report to Stockholders, and the CPA Certification Statement using eFiling. Further instructions are found on the Commission’s website at https://www.ferc.gov/ferc-online/ferc-online/frequently-asked-questions-faqs-efilingferc-online.
    7. Federal, State, and Local Governments and other authorized users may obtain additional blank copies of FERC Form 1 and 3-Q free of charge from https://www.ferc.gov/general-information-0/electric-industry-forms.
  4. When to Submit

    FERC Forms 1 and 3-Q must be filed by the following schedule:

    1. FERC Form 1 for each year ending December 31 must be filed by April 18th of the following year (18 CFR § 141.1), and
    2. FERC Form 3-Q for each calendar quarter must be filed within 60 days after the reporting quarter (18 C.F.R. § 141.400).
  5. Where to Send Comments on Public Reporting Burden.

    The public reporting burden for the FERC Form 1 collection of information is estimated to average 1,168 hours per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data-needed, and completing and reviewing the collection of information. The public reporting burden for the FERC Form 3-Q collection of information is estimated to average 168 hours per response.

    Send comments regarding these burden estimates or any aspect of these collections of information, including suggestions for reducing burden, to the Federal Energy Regulatory Commission, 888 First Street NE, Washington, DC 20426 (Attention: Information Clearance Officer); and to the Office of Information and Regulatory Affairs, Office of Management and Budget, Washington, DC 20503 (Attention: Desk Officer for the Federal Energy Regulatory Commission). No person shall be subject to any penalty if any collection of information does not display a valid control number (44 U.S.C. § 3512 (a)).

GENERAL INSTRUCTIONS

  1. Prepare this report in conformity with the Uniform System of Accounts (18 CFR Part 101) (USofA). Interpret all accounting words and phrases in accordance with the USofA.
  2. Enter in whole numbers (dollars or MWH) only, except where otherwise noted. (Enter cents for averages and figures per unit where cents are important. The truncating of cents is allowed except on the four basic financial statements where rounding is required.) The amounts shown on all supporting pages must agree with the amounts entered on the statements that they support. When applying thresholds to determine significance for reporting purposes, use for balance sheet accounts the balances at the end of the current reporting period, and use for statement of income accounts the current year's year to date amounts.
  3. Complete each question fully and accurately, even if it has been answered in a previous report. Enter the word "None" where it truly and completely states the fact.
  4. For any page(s) that is not applicable to the respondent, omit the page(s) and enter "NA," "NONE," or "Not Applicable" in column (d) on the List of Schedules, pages 2 and 3.
  5. Enter the month, day, and year for all dates. Use customary abbreviations. The "Date of Report" included in the header of each page is to be completed only for resubmissions (see VII. below).
  6. Generally, except for certain schedules, all numbers, whether they are expected to be debits or credits, must be reported as positive. Numbers having a sign that is different from the expected sign must be reported by enclosing the numbers in parentheses.
  7. For any resubmissions, please explain the reason for the resubmission in a footnote to the data field.
  8. Do not make references to reports of previous periods/years or to other reports in lieu of required entries, except as specifically authorized.
  9. Wherever (schedule) pages refer to figures from a previous period/year, the figures reported must be based upon those shown by the report of the previous period/year, or an appropriate explanation given as to why the different figures were used.
  10. Schedule specific instructions are found in the applicable taxonomy and on the applicable blank rendered form.
Definitions for statistical classifications used for completing schedules for transmission system reporting are as follows:

FNS - Firm Network Transmission Service for Self. "Firm" means service that can not be interrupted for economic reasons and is intended to remain reliable even under adverse conditions. "Network Service" is Network Transmission Service as described in Order No. 888 and the Open Access Transmission Tariff. "Self" means the respondent.

FNO - Firm Network Service for Others. "Firm" means that service cannot be interrupted for economic reasons and is intended to remain reliable even under adverse conditions. "Network Service" is Network Transmission Service as described in Order No. 888 and the Open Access Transmission Tariff.

LFP - for Long-Term Firm Point-to-Point Transmission Reservations. "Long-Term" means one year or longer and” firm" means that service cannot be interrupted for economic reasons and is intended to remain reliable even under adverse conditions. "Point-to-Point Transmission Reservations" are described in Order No. 888 and the Open Access Transmission Tariff. For all transactions identified as LFP, provide in a footnote the termination date of the contract defined as the earliest date either buyer or seller can unilaterally cancel the contract.

OLF - Other Long-Term Firm Transmission Service. Report service provided under contracts which do not conform to the terms of the Open Access Transmission Tariff. "Long-Term" means one year or longer and “firm” means that service cannot be interrupted for economic reasons and is intended to remain reliable even under adverse conditions. For all transactions identified as OLF, provide in a footnote the termination date of the contract defined as the earliest date either buyer or seller can unilaterally get out of the contract.

SFP - Short-Term Firm Point-to-Point Transmission Reservations. Use this classification for all firm point-to-point transmission reservations, where the duration of each period of reservation is less than one-year.

NF - Non-Firm Transmission Service, where firm means that service cannot be interrupted for economic reasons and is intended to remain reliable even under adverse conditions.

OS - Other Transmission Service. Use this classification only for those services which can not be placed in the above-mentioned classifications, such as all other service regardless of the length of the contract and service FERC Form. Describe the type of service in a footnote for each entry.

AD - Out-of-Period Adjustments. Use this code for any accounting adjustments or "true-ups" for service provided in prior reporting periods. Provide an explanation in a footnote for each adjustment.

DEFINITIONS
  1. Commission Authorization (Comm. Auth.) -- The authorization of the Federal Energy Regulatory Commission, or any other Commission. Name the commission whose authorization was obtained and give date of the authorization.
  2. Respondent -- The person, corporation, licensee, agency, authority, or other Legal entity or instrumentality in whose behalf the report is made.

EXCERPTS FROM THE LAW

Federal Power Act, 16 U.S.C. § 791a-825r

Sec. 3. The words defined in this section shall have the following meanings for purposes of this Act, to with:

  1. ’Corporation' means any corporation, joint-stock company, partnership, association, business trust, organized group of persons, whether incorporated or not, or a receiver or receivers, trustee or trustees of any of the foregoing. It shall not include 'municipalities, as hereinafter defined;
  2. 'Person' means an individual or a corporation;
  3. 'Licensee, means any person, State, or municipality Licensed under the provisions of section 4 of this Act, and any assignee or successor in interest thereof;
  1. 'municipality means a city, county, irrigation district, drainage district, or other political subdivision or agency of a State competent under the Laws thereof to carry and the business of developing, transmitting, unitizing, or distributing power; ......
  1. "project' means. a complete unit of improvement or development, consisting of a power house, all water conduits, all dams and appurtenant works and structures (including navigation structures) which are a part of said unit, and all storage, diverting, or fore bay reservoirs directly connected therewith, the primary line or lines transmitting power there from to the point of junction with the distribution system or with the interconnected primary transmission system, all miscellaneous structures used and useful in connection with said unit or any part thereof, and all water rights, rights-of-way, ditches, dams, reservoirs, Lands, or interest in Lands the use and occupancy of which are necessary or appropriate in the maintenance and operation of such unit;

"Sec. 4. The Commission is hereby authorized and empowered
  1. 'To make investigations and to collect and record data concerning the utilization of the water 'resources of any region to be developed, the water-power industry and its relation to other industries and to interstate or foreign commerce, and concerning the location, capacity, development costs, and relation to markets of power sites; ... to the extent the Commission may deem necessary or useful for the purposes of this Act."

"Sec. 304.
  1. Every Licensee and every public utility shall file with the Commission such annual and other periodic or special* reports as the Commission may by rules and regulations or other prescribe as necessary or appropriate to assist the Commission in the proper administration of this Act. The Commission may prescribe the manner and FERC Form in which such reports shall be made, and require from such persons specific answers to all questions upon which the Commission may need information. The Commission may require that such reports shall include, among other things, full information as to assets and Liabilities, capitalization, net investment, and reduction thereof, gross receipts, interest due and paid, depreciation, and other reserves, cost of project and other facilities, cost of maintenance and operation of the project and other facilities, cost of renewals and replacement of the project works and other facilities, depreciation, generation, transmission, distribution, delivery, use, and sale of electric energy. The Commission may require any such person to make adequate provision for currently determining such costs and other facts. Such reports shall be made under oath unless the Commission otherwise specifies*.10
"Sec. 309.
  1. The Commission shall have power to perform any and all acts, and to prescribe, issue, make, and rescind such orders, rules and regulations as it may find necessary or appropriate to carry out the provisions of this Act. Among other things, such rules and regulations may define accounting, technical, and trade terms used in this Act; and may prescribe the FERC Form or FERC Forms of all statements, declarations, applications, and reports to be filed with the Commission, the information which they shall contain, and the time within which they shall be field..."

GENERAL PENALTIES

The Commission may assess up to $1 million per day per violation of its rules and regulations. See FPA § 316(a) (2005), 16 U.S.C. § 825o(a).


FERC FORM NO.
1/3-Q

REPORT OF MAJOR ELECTRIC UTILITIES, LICENSEES AND OTHER
Identification
01 Exact Legal Name of Respondent

NorthWestern Corporation
02 Year/ Period of Report


End of:
2023
/
Q3
03 Previous Name and Date of Change (If name changed during year)

/
04 Address of Principal Office at End of Period (Street, City, State, Zip Code)

3010 West 69th Street Sioux Falls, SD 57108
05 Name of Contact Person

Evan VerWey
06 Title of Contact Person

Manager of Financial Reporting
07 Address of Contact Person (Street, City, State, Zip Code)

3010 West 69th Street, Sioux Falls, SD 57108
08 Telephone of Contact Person, Including Area Code

(605) 978-2906
09 This Report is An Original / A Resubmission

(1)
An Original

(2)
A Resubmission
10 Date of Report (Mo, Da, Yr)

09/30/2023
Quarterly Corporate Officer Certification
The undersigned officer certifies that:

I have examined this report and to the best of my knowledge, information, and belief all statements of fact contained in this report are correct statements of the business affairs of the respondent and the financial statements, and other financial information contained in this report, conform in all material respects to the Uniform System of Accounts.

01 Name

Jeff Berzina
02 Title

Controller
03 Signature

Jeff Berzina
04 Date Signed (Mo, Da, Yr)

11/07/2023
Title 18, U.S.C. 1001 makes it a crime for any person to knowingly and willingly to make to any Agency or Department of the United States any false, fictitious or fraudulent statements as to any matter within its jurisdiction.


Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

09/30/2023
Year/Period of Report

End of:
2023
/
Q3
List of Schedules

Enter in column (c) the terms "none," "not applicable," or "NA," as appropriate, where no information or amounts have been reported for certain pages. Omit pages where the respondents are "none," "not applicable," or "NA".

Line No.
Title of Schedule
(a)
Reference Page No.
(b)
Remarks
(c)
ScheduleIdentificationAbstract
Identification
1
ScheduleListOfSchedulesAbstract
List of Schedules (Electric Utility)
2
1
ScheduleImportantChangesDuringTheQuarterYearAbstract
Important Changes During the Quarter
108
2
ScheduleComparativeBalanceSheetAbstract
Comparative Balance Sheet
110
3
ScheduleStatementOfIncomeAbstract
Statement of Income for the Quarter
114
4
ScheduleRetainedEarningsAbstract
Statement of Retained Earnings for the Quarter
118
5
ScheduleStatementOfCashFlowsAbstract
Statement of Cash Flows
120
6
ScheduleNotesToFinancialStatementsAbstract
Notes to Financial Statements
122
7
ScheduleStatementOfAccumulatedOtherComprehensiveIncomeAndHedgingActivitiesAbstract
Statement of Accum Comp Income, Comp Income, and Hedging Activities
122a
8
ScheduleSummaryOfUtilityPlantAndAccumulatedProvisionsForDepreciationAmortizationAndDepletionAbstract
Summary of Utility Plant & Accumulated Provisions for Dep, Amort & Dep
200
9
ScheduleElectricPlantInServiceAndAccumulatedProvisionForDepreciationByFunctionAbstract
Electric Plant In Service and Accum Provision For Depr by Function
208
10
ScheduleTransmissionServiceAndGenerationInterconnectionStudyCostsAbstract
Transmission Service and Generation Interconnection Study Costs
231
11
ScheduleOtherRegulatoryAssetsAbstract
Other Regulatory Assets
232
12
ScheduleOtherRegulatoryLiabilitiesAbstract
Other Regulatory Liabilities
278
13
ScheduleElectricOperatingRevenuesAbstract
Elec Operating Revenues (Individual Schedule Lines 300-301)
300
14
ScheduleRegionalTransmissionServiceRevenuesAbstract
Regional Transmission Service Revenues (Account 457.1)
302
Not Applicable
15
ScheduleElectricProductionOtherPowerTransmissionRegionalExpensesAbstract
Electric Prod, Other Power Supply Exp, Trans and Distrib Exp
324
16
ScheduleElectricCustomerAccountServiceSalesAdministrativeAndGeneralExpensesAbstract
Electric Customer Accts, Service, Sales, Admin and General Expenses
325
17
ScheduleTransmissionOfElectricityForOthersAbstract
Transmission of Electricity for Others
328
18
ScheduleTransmissionOfElectricityByIsoOrRtoAbstract
Transmission of Electricity by ISO/RTOs
331
Not Applicable
19
ScheduleTransmissionOfElectricityByOthersAbstract
Transmission of Electricity by Others
332
20
ScheduleDepreciationDepletionAndAmortizationsAbstract
Deprec, Depl and Amort of Elec Plant (403,403.1,404,and 405) (except Amortization of Acquisition Adjustments)
338
21
ScheduleAmountsIncludedInIsoOrRtoSettlementAbstract
Amounts Included in ISO/RTO Settlement Statements
397
22
ScheduleMonthlyPeaksAndOutputAbstract
Monthly Peak Loads and Energy Output
399
23
ScheduleMonthlyTransmissionSystemPeakLoadAbstract
Monthly Transmission System Peak Load
400
24
ScheduleMonthlyIsoOrRtoTransmissionSystemPeakLoadAbstract
Monthly ISO/RTO Transmission System Peak Load
400a


Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

09/30/2023
Year/Period of Report

End of:
2023
/
Q3
IMPORTANT CHANGES DURING THE QUARTER/YEAR

Give particulars (details) concerning the matters indicated below. Make the statements explicit and precise, and number them in accordance with the inquiries. Each inquiry should be answered. Enter "none," "not applicable," or "NA" where applicable. If information which answers an inquiry is given elsewhere in the report, make a reference to the schedule in which it appears.

  1. Changes in and important additions to franchise rights: Describe the actual consideration given therefore and state from whom the franchise rights were acquired. If acquired without the payment of consideration, state that fact.
  2. Acquisition of ownership in other companies by reorganization, merger, or consolidation with other companies: Give names of companies involved, particulars concerning the transactions, name of the Commission authorizing the transaction, and reference to Commission authorization.
  3. Purchase or sale of an operating unit or system: Give a brief description of the property, and of the transactions relating thereto, and reference to Commission authorization, if any was required. Give date journal entries called for by the Uniform System of Accounts were submitted to the Commission.
  4. Important leaseholds (other than leaseholds for natural gas lands) that have been acquired or given, assigned or surrendered: Give effective dates, lengths of terms, names of parties, rents, and other condition. State name of Commission authorizing lease and give reference to such authorization.
  5. Important extension or reduction of transmission or distribution system: State territory added or relinquished and date operations began or ceased and give reference to Commission authorization, if any was required. State also the approximate number of customers added or lost and approximate annual revenues of each class of service. Each natural gas company must also state major new continuing sources of gas made available to it from purchases, development, purchase contract or otherwise, giving location and approximate total gas volumes available, period of contracts, and other parties to any such arrangements, etc.
  6. Obligations incurred as a result of issuance of securities or assumption of liabilities or guarantees including issuance of short-term debt and commercial paper having a maturity of one year or less. Give reference to FERC or State Commission authorization, as appropriate, and the amount of obligation or guarantee.
  7. Changes in articles of incorporation or amendments to charter: Explain the nature and purpose of such changes or amendments.
  8. State the estimated annual effect and nature of any important wage scale changes during the year.
  9. State briefly the status of any materially important legal proceedings pending at the end of the year, and the results of any such proceedings culminated during the year.
  10. Describe briefly any materially important transactions of the respondent not disclosed elsewhere in this report in which an officer, director, security holder reported on Pages 104 or 105 of the Annual Report Form No. 1, voting trustee, associated company or known associate of any of these persons was a party or in which any such person had a material interest.
  11. (Reserved.)
  12. If the important changes during the year relating to the respondent company appearing in the annual report to stockholders are applicable in every respect and furnish the data required by Instructions 1 to 11 above, such notes may be included on this page.
  13. Describe fully any changes in officers, directors, major security holders and voting powers of the respondent that may have occurred during the reporting period.
  14. In the event that the respondent participates in a cash management program(s) and its proprietary capital ratio is less than 30 percent please describe the significant events or transactions causing the proprietary capital ratio to be less than 30 percent, and the extent to which the respondent has amounts loaned or money advanced to its parent, subsidiary, or affiliated companies through a cash management program(s). Additionally, please describe plans, if any to regain at least a 30 percent proprietary ratio.
1. None
2. On June 1, 2022, we filed a legal corporate restructuring application (Restructuring Plan) with the state commissions in Montana, South Dakota, and Nebraska and the Federal Energy Regulatory Commission. We received all necessary regulatory approvals to effectuate this Restructuring Plan.

On October 2, 2023, NorthWestern Corporation and NorthWestern Energy Group, Inc. completed the reorganization into a holding company structure. In this reorganization, shareholders of Northwestern Corporation (the predecessor publicly held parent company) became shareholders of Northwestern Energy Group, Inc., maintaining the same number of shares and ownership percentage as held in Northwestern Corporation immediately prior to the reorganization. Northwestern Corporation became a wholly-owned subsidiary of Northwestern Energy Group, Inc. Immediately after consummation of the reorganization, NorthWestern Energy Group, Inc. had, on a consolidated basis, the same assets, businesses and operations as NorthWestern Corporation had immediately prior to the consummation of the reorganization. In the early part of 2024, we intend to complete the second and final phase of the holding company reorganization which will result in the South Dakota and Nebraska regulated utilities business becoming a separate direct subsidiary of NorthWestern Energy Group, Inc. This is planned to be accomplished through Northwestern Corporation contributing the assets and liabilities of its South Dakota and Nebraska regulated utilities to its direct subsidiary, Northwestern Energy Public Service Corporation (NPS), and then distributing its equity interest in NPS and certain other subsidiaries to Northwestern Energy Group, Inc., resulting in Northwestern Corporation owning and operating only the Montana regulated utility and NPS owning and operating the Nebraska and South Dakota utilities, each as a direct subsidiary of Northwestern Energy Group, Inc.
3. On January 16, 2023, we entered into a definitive agreement (the Avista Agreement) with Avista Corporation (Avista) to acquire Avista's 15 percent interest in each of Units 3 and 4 at the Colstrip Generating Station, a coal-fired, base-load electric generation facility located in Colstrip, Montana. The Avista Agreement provides that the purchase price will be $0 and that we will acquire Avista's interest effective December 31, 2025, subject to the satisfaction of the closing conditions contained within the Avista Agreement. Under the terms of this Avista Agreement, we will be responsible for operating costs starting on January 1, 2026; while Avista will retain responsibility for its pre-closing share of environmental and pension liabilities attributed to events or conditions existing prior to the closing of the transaction and for any future decommission and demolition costs associated with the existing facilities that comprise Avista's interest.

The Avista Agreement contains customary representations and warranties, covenants, and indemnification obligations, and the Avista Agreement is subject to customary conditions and approvals, including approval from the FERC. As the terms of this agreement are not effective until January 1, 2026, and given the aforementioned conditions and approvals needed, no journal entries have been submitted to the Commission at this time.
4. None
5. None
6. See Note 6, "Financing Activities." Equity Issuance: FERC Order ES19-36-000 and MPSC Order Number 7691 Docket Number D2019.08.046; Debt Issuance: FERC Order ES21-53-000 and MPSC Order Number 7804 Docket Number D2021.08.107.
7. On October 2, 2023, the Amended and Restated Certificate of Incorporation ("Charter") of Northwestern Corporation was amended pursuant to the merger (see item #4 above) to add a provision, which is required by Section 251(g) of the General Corporation Law of the State of Delaware (the “DGCL”), that provides that any act or transaction by or involving Northwestern Corporation, other than the election or removal of directors, that requires for its adoption under the DGCL or the Charter the approval of the stockholders of Northwestern Corporation shall require the approval of the stockholders of Northwestern Energy Group, Inc. by the same vote as is required by the DGCL and/or the Charter.
8. None
9. See Note 9, "Commitments and Contingencies".
10. None
12. None
13. On January 1, 2023, Bob Rowe retired as Chief Executive Officer and Brian Bird was promoted to President and Chief Executive Officer.

On January 1, 2023, Heather Grahame retired as General Counsel and Vice President - Regulatory and Federal Government Affairs. On this same day, Cyndee Fang was promoted to Vice President - Regulatory and Shannon Heim was promoted to Vice President - General Counsel.

On April 28, 2023, Sherina Edwards was elected by our shareholders to the Board of Directors.

On June 16, 2023, Curt Pohl retired as Vice President of Asset Management and Business Development and Bleau LaFave was promoted to Vice President of Asset Management and Business Development.

On October 2, 2023, pursuant to the merger referenced in item 4 above, the Directors of NorthWestern Corporation retired from their positions and became Directors of NorthWestern Energy Group, Inc. These Directors were replaced with the existing Officers of NorthWestern Corporation. As such, on October 2, 2023, the Directors of NorthWestern Corporation are as follows:
Brian Bird;
Crystal Lail;
Shannon Heim;
Michael Cashell;
Cyndee Fang;
John Hines;
Bleau Lafave;
Jason Merkel;
Bobbi Schroeppel; and
Jeanne Vold

Further, as pursuant to the merger referenced in item 4 above, shareholders of Northwestern Corporation (the predecessor publicly held parent company) became shareholders of Northwestern Energy Group, Inc., maintaining the same number of shares and ownership percentage as held in Northwestern Corporation immediately prior to the reorganization. Northwestern Corporation became a wholly-owned subsidiary of Northwestern Energy Group, Inc.
14. NA


Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

09/30/2023
Year/Period of Report

End of:
2023
/
Q3
COMPARATIVE BALANCE SHEET (ASSETS AND OTHER DEBITS)
Line No.
Title of Account
(a)
Ref. Page No.
(b)
Current Year End of Quarter/Year Balance
(c)
Prior Year End Balance 12/31
(d)
1
UtilityPlantAbstract
UTILITY PLANT
2
UtilityPlant
Utility Plant (101-106, 114)
200
7,784,675,907
7,591,279,874
3
ConstructionWorkInProgress
Construction Work in Progress (107)
200
478,948,536
300,649,215
4
UtilityPlantAndConstructionWorkInProgress
TOTAL Utility Plant (Enter Total of lines 2 and 3)
8,263,624,443
7,891,929,089
5
AccumulatedProvisionForDepreciationAmortizationAndDepletionOfPlantUtility
(Less) Accum. Prov. for Depr. Amort. Depl. (108, 110, 111, 115)
200
2,907,443,469
2,786,711,964
6
UtilityPlantNet
Net Utility Plant (Enter Total of line 4 less 5)
5,356,180,974
5,105,217,125
7
NuclearFuelInProcessOfRefinementConversionEnrichmentAndFabrication
Nuclear Fuel in Process of Ref., Conv., Enrich., and Fab. (120.1)
202
8
NuclearFuelMaterialsAndAssembliesStockAccountMajorOnly
Nuclear Fuel Materials and Assemblies-Stock Account (120.2)
9
NuclearFuelAssembliesInReactorMajorOnly
Nuclear Fuel Assemblies in Reactor (120.3)
10
SpentNuclearFuelMajorOnly
Spent Nuclear Fuel (120.4)
11
NuclearFuelUnderCapitalLeases
Nuclear Fuel Under Capital Leases (120.6)
12
AccumulatedProvisionForAmortizationOfNuclearFuelAssemblies
(Less) Accum. Prov. for Amort. of Nucl. Fuel Assemblies (120.5)
202
13
NuclearFuelNet
Net Nuclear Fuel (Enter Total of lines 7-11 less 12)
14
UtilityPlantAndNuclearFuelNet
Net Utility Plant (Enter Total of lines 6 and 13)
5,356,180,974
5,105,217,125
15
OtherElectricPlantAdjustments
Utility Plant Adjustments (116)
357,585,527
357,585,527
16
GasStoredUndergroundNoncurrent
Gas Stored Underground - Noncurrent (117)
36,204,624
36,209,611
17
OtherPropertyAndInvestmentsAbstract
OTHER PROPERTY AND INVESTMENTS
18
NonutilityProperty
Nonutility Property (121)
686,805
686,805
19
AccumulatedProvisionForDepreciationAndAmortizationOfNonutilityProperty
(Less) Accum. Prov. for Depr. and Amort. (122)
67,635
65,534
20
InvestmentInAssociatedCompanies
Investments in Associated Companies (123)
21
InvestmentInSubsidiaryCompanies
Investment in Subsidiary Companies (123.1)
224
31,994,810
25,343,937
23
NoncurrentPortionOfAllowances
Noncurrent Portion of Allowances
228
24
OtherInvestments
Other Investments (124)
18,818,975
21,035,719
25
SinkingFunds
Sinking Funds (125)
26
DepreciationFund
Depreciation Fund (126)
27
AmortizationFundFederal
Amortization Fund - Federal (127)
28
OtherSpecialFunds
Other Special Funds (128)
29
SpecialFunds
Special Funds (Non Major Only) (129)
30
DerivativeInstrumentAssetsLongTerm
Long-Term Portion of Derivative Assets (175)
31
DerivativeInstrumentAssetsHedgesLongTerm
Long-Term Portion of Derivative Assets - Hedges (176)
32
OtherPropertyAndInvestments
TOTAL Other Property and Investments (Lines 18-21 and 23-31)
51,432,955
47,000,927
33
CurrentAndAccruedAssetsAbstract
CURRENT AND ACCRUED ASSETS
34
CashAndWorkingFunds
Cash and Working Funds (Non-major Only) (130)
35
Cash
Cash (131)
3,837,582
8,029,111
36
SpecialDeposits
Special Deposits (132-134)
15,384,322
12,761,965
37
WorkingFunds
Working Fund (135)
22,852
23,450
38
TemporaryCashInvestments
Temporary Cash Investments (136)
39
NotesReceivable
Notes Receivable (141)
40
CustomerAccountsReceivable
Customer Accounts Receivable (142)
76,611,598
106,890,491
41
OtherAccountsReceivable
Other Accounts Receivable (143)
13,232,041
26,793,907
42
AccumulatedProvisionForUncollectibleAccountsCredit
(Less) Accum. Prov. for Uncollectible Acct.-Credit (144)
3,330,428
2,451,237
43
NotesReceivableFromAssociatedCompanies
Notes Receivable from Associated Companies (145)
44
AccountsReceivableFromAssociatedCompanies
Accounts Receivable from Assoc. Companies (146)
894,852
3,143,188
45
FuelStock
Fuel Stock (151)
227
8,561,678
7,724,941
46
FuelStockExpensesUndistributed
Fuel Stock Expenses Undistributed (152)
227
47
Residuals
Residuals (Elec) and Extracted Products (153)
227
48
PlantMaterialsAndOperatingSupplies
Plant Materials and Operating Supplies (154)
227
82,211,625
71,154,248
49
Merchandise
Merchandise (155)
227
50
OtherMaterialsAndSupplies
Other Materials and Supplies (156)
227
51
NuclearMaterialsHeldForSale
Nuclear Materials Held for Sale (157)
202/227
52
AllowanceInventoryAndWithheld
Allowances (158.1 and 158.2)
228
53
NoncurrentPortionOfAllowances
(Less) Noncurrent Portion of Allowances
228
54
StoresExpenseUndistributed
Stores Expense Undistributed (163)
227
1,362,188
55
GasStoredCurrent
Gas Stored Underground - Current (164.1)
27,554,909
27,722,831
56
LiquefiedNaturalGasStoredAndHeldForProcessing
Liquefied Natural Gas Stored and Held for Processing (164.2-164.3)
57
Prepayments
Prepayments (165)
(a)
26,627,581
23,739,745
58
AdvancesForGas
Advances for Gas (166-167)
59
InterestAndDividendsReceivable
Interest and Dividends Receivable (171)
60
RentsReceivable
Rents Receivable (172)
328,879
213,473
61
AccruedUtilityRevenues
Accrued Utility Revenues (173)
64,330,594
117,418,484
62
MiscellaneousCurrentAndAccruedAssets
Miscellaneous Current and Accrued Assets (174)
681,364
2,372,750
63
DerivativeInstrumentAssets
Derivative Instrument Assets (175)
64
DerivativeInstrumentAssetsLongTerm
(Less) Long-Term Portion of Derivative Instrument Assets (175)
65
DerivativeInstrumentAssetsHedges
Derivative Instrument Assets - Hedges (176)
66
DerivativeInstrumentAssetsHedgesLongTerm
(Less) Long-Term Portion of Derivative Instrument Assets - Hedges (176)
67
CurrentAndAccruedAssets
Total Current and Accrued Assets (Lines 34 through 66)
315,587,261
405,537,347
68
DeferredDebitsAbstract
DEFERRED DEBITS
69
UnamortizedDebtExpense
Unamortized Debt Expenses (181)
11,334,156
9,254,937
70
ExtraordinaryPropertyLosses
Extraordinary Property Losses (182.1)
230a
71
UnrecoveredPlantAndRegulatoryStudyCosts
Unrecovered Plant and Regulatory Study Costs (182.2)
230b
72
OtherRegulatoryAssets
Other Regulatory Assets (182.3)
232
733,530,719
729,084,376
73
PreliminarySurveyAndInvestigationCharges
Prelim. Survey and Investigation Charges (Electric) (183)
376,264
74
PreliminaryNaturalGasSurveyAndInvestigationChargesAndOtherPreliminarySurveyAndInvestigationCharges
Preliminary Natural Gas Survey and Investigation Charges 183.1)
75
OtherPreliminarySurveyAndInvestigationCharges
Other Preliminary Survey and Investigation Charges (183.2)
76
ClearingAccounts
Clearing Accounts (184)
1,233,225
37,192
77
TemporaryFacilities
Temporary Facilities (185)
78
MiscellaneousDeferredDebits
Miscellaneous Deferred Debits (186)
233
8,956,890
9,543,157
79
DeferredLossesFromDispositionOfUtilityPlant
Def. Losses from Disposition of Utility Plt. (187)
80
ResearchDevelopmentAndDemonstrationExpenditures
Research, Devel. and Demonstration Expend. (188)
352
81
UnamortizedLossOnReacquiredDebt
Unamortized Loss on Reaquired Debt (189)
(b)
20,597,371
22,619,741
82
AccumulatedDeferredIncomeTaxes
Accumulated Deferred Income Taxes (190)
234
154,240,845
163,943,624
83
UnrecoveredPurchasedGasCosts
Unrecovered Purchased Gas Costs (191)
16,469,099
100,874,939
84
DeferredDebits
Total Deferred Debits (lines 69 through 83)
946,738,569
1,035,357,966
85
AssetsAndOtherDebits
TOTAL ASSETS (lines 14-16, 32, 67, and 84)
7,063,729,910
6,986,908,503


Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

09/30/2023
Year/Period of Report

End of:
2023
/
Q3
FOOTNOTE DATA

(a) Concept: Prepayments
South Dakota Operations Prepayments (165) are $13,459,476 and $11,517,440 for 2023 and 2022, respectively.

Montana Operations Prepayments (165) are $13,168,106 and $12,222,305 for 2023 and 2022, respectively.
(b) Concept: UnamortizedLossOnReacquiredDebt
Montana Operations Unamortized Loss on Reacquired Debt (189) is $18,935,417 and $20,416,114 for 2023 and 2022, respectively.

Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

09/30/2023
Year/Period of Report

End of:
2023
/
Q3
COMPARATIVE BALANCE SHEET (LIABILITIES AND OTHER CREDITS)
Line No.
Title of Account
(a)
Ref. Page No.
(b)
Current Year End of Quarter/Year Balance
(c)
Prior Year End Balance 12/31
(d)
1
ProprietaryCapitalAbstract
PROPRIETARY CAPITAL
2
CommonStockIssued
Common Stock Issued (201)
250
647,619
632,782
3
PreferredStockIssued
Preferred Stock Issued (204)
250
4
CapitalStockSubscribed
Capital Stock Subscribed (202, 205)
5
StockLiabilityForConversion
Stock Liability for Conversion (203, 206)
6
PremiumOnCapitalStock
Premium on Capital Stock (207)
7
OtherPaidInCapital
Other Paid-In Capital (208-211)
253
2,078,554,031
1,999,375,991
8
InstallmentsReceivedOnCapitalStock
Installments Received on Capital Stock (212)
252
9
DiscountOnCapitalStock
(Less) Discount on Capital Stock (213)
254
10
CapitalStockExpense
(Less) Capital Stock Expense (214)
254b
11
RetainedEarnings
Retained Earnings (215, 215.1, 216)
118
765,810,909
769,493,168
12
UnappropriatedUndistributedSubsidiaryEarnings
Unappropriated Undistributed Subsidiary Earnings (216.1)
118
598,586
222,330
13
ReacquiredCapitalStock
(Less) Reacquired Capital Stock (217)
250
98,122,057
98,392,040
14
NoncorporateProprietorship
Noncorporate Proprietorship (Non-major only) (218)
15
AccumulatedOtherComprehensiveIncome
Accumulated Other Comprehensive Income (219)
122(a)(b)
5,878,386
5,705,664
16
ProprietaryCapital
Total Proprietary Capital (lines 2 through 15)
2,740,413,530
2,665,181,907
17
LongTermDebtAbstract
LONG-TERM DEBT
18
Bonds
Bonds (221)
256
2,479,660,000
2,179,660,000
19
ReacquiredBonds
(Less) Reacquired Bonds (222)
256
20
AdvancesFromAssociatedCompanies
Advances from Associated Companies (223)
256
21
OtherLongTermDebt
Other Long-Term Debt (224)
256
177,000,000
450,000,000
22
UnamortizedPremiumOnLongTermDebt
Unamortized Premium on Long-Term Debt (225)
23
UnamortizedDiscountOnLongTermDebtDebit
(Less) Unamortized Discount on Long-Term Debt-Debit (226)
13,077
33,056
24
LongTermDebt
Total Long-Term Debt (lines 18 through 23)
2,656,646,923
2,629,626,944
25
OtherNoncurrentLiabilitiesAbstract
OTHER NONCURRENT LIABILITIES
26
ObligationsUnderCapitalLeaseNoncurrent
Obligations Under Capital Leases - Noncurrent (227)
6,880,850
9,389,857
27
AccumulatedProvisionForPropertyInsurance
Accumulated Provision for Property Insurance (228.1)
28
AccumulatedProvisionForInjuriesAndDamages
Accumulated Provision for Injuries and Damages (228.2)
(a)
5,484,722
4,365,711
29
AccumulatedProvisionForPensionsAndBenefits
Accumulated Provision for Pensions and Benefits (228.3)
(b)
10,324,552
10,546,632
30
AccumulatedMiscellaneousOperatingProvisions
Accumulated Miscellaneous Operating Provisions (228.4)
56,315,932
72,588,961
31
AccumulatedProvisionForRateRefunds
Accumulated Provision for Rate Refunds (229)
32
LongTermPortionOfDerivativeInstrumentLiabilities
Long-Term Portion of Derivative Instrument Liabilities
33
LongTermPortionOfDerivativeInstrumentLiabilitiesHedges
Long-Term Portion of Derivative Instrument Liabilities - Hedges
34
AssetRetirementObligations
Asset Retirement Obligations (230)
41,702,199
40,893,877
35
OtherNoncurrentLiabilities
Total Other Noncurrent Liabilities (lines 26 through 34)
120,708,255
137,785,038
36
CurrentAndAccruedLiabilitiesAbstract
CURRENT AND ACCRUED LIABILITIES
37
NotesPayable
Notes Payable (231)
92,402
38
AccountsPayable
Accounts Payable (232)
129,487,231
214,538,891
39
NotesPayableToAssociatedCompanies
Notes Payable to Associated Companies (233)
40
AccountsPayableToAssociatedCompanies
Accounts Payable to Associated Companies (234)
4,561,817
4,356,816
41
CustomerDeposits
Customer Deposits (235)
12,100,861
10,853,645
42
TaxesAccrued
Taxes Accrued (236)
262
150,860,103
92,522,773
43
InterestAccrued
Interest Accrued (237)
36,038,100
18,349,945
44
DividendsDeclared
Dividends Declared (238)
45
MaturedLongTermDebt
Matured Long-Term Debt (239)
46
MaturedInterest
Matured Interest (240)
47
TaxCollectionsPayable
Tax Collections Payable (241)
1,329,430
2,441,695
48
MiscellaneousCurrentAndAccruedLiabilities
Miscellaneous Current and Accrued Liabilities (242)
(c)
67,716,020
72,402,424
49
ObligationsUnderCapitalLeasesCurrent
Obligations Under Capital Leases-Current (243)
3,725,834
3,802,179
50
DerivativesInstrumentLiabilities
Derivative Instrument Liabilities (244)
51
LongTermPortionOfDerivativeInstrumentLiabilities
(Less) Long-Term Portion of Derivative Instrument Liabilities
52
DerivativeInstrumentLiabilitiesHedges
Derivative Instrument Liabilities - Hedges (245)
53
LongTermPortionOfDerivativeInstrumentLiabilitiesHedges
(Less) Long-Term Portion of Derivative Instrument Liabilities-Hedges
54
CurrentAndAccruedLiabilities
Total Current and Accrued Liabilities (lines 37 through 53)
405,819,396
419,360,770
55
DeferredCreditsAbstract
DEFERRED CREDITS
56
CustomerAdvancesForConstruction
Customer Advances for Construction (252)
(d)
107,139,354
95,393,208
57
AccumulatedDeferredInvestmentTaxCredits
Accumulated Deferred Investment Tax Credits (255)
266
322,374
388,447
58
DeferredGainsFromDispositionOfUtilityPlant
Deferred Gains from Disposition of Utility Plant (256)
59
OtherDeferredCredits
Other Deferred Credits (253)
269
146,477,981
158,152,503
60
OtherRegulatoryLiabilities
Other Regulatory Liabilities (254)
278
174,092,578
171,400,902
61
UnamortizedGainOnReacquiredDebt
Unamortized Gain on Reacquired Debt (257)
62
AccumulatedDeferredIncomeTaxesAcceleratedAmortizationProperty
Accum. Deferred Income Taxes-Accel. Amort.(281)
272
63
AccumulatedDeferredIncomeTaxesOtherProperty
Accum. Deferred Income Taxes-Other Property (282)
481,090,587
455,220,141
64
AccumulatedDeferredIncomeTaxesOther
Accum. Deferred Income Taxes-Other (283)
231,018,932
254,398,643
65
DeferredCredits
Total Deferred Credits (lines 56 through 64)
1,140,141,806
1,134,953,844
66
LiabilitiesAndOtherCredits
TOTAL LIABILITIES AND STOCKHOLDER EQUITY (lines 16, 24, 35, 54 and 65)
7,063,729,910
6,986,908,503


Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

09/30/2023
Year/Period of Report

End of:
2023
/
Q3
FOOTNOTE DATA

(a) Concept: AccumulatedProvisionForInjuriesAndDamages
South Dakota Operations Provision for Injuries and Damages (228.2) are $495,400 and $480,925 for 2023 and 2022, respectively.

Montana Operations Provision for Injuries and Damages (228.2) are $4,989,322 and $3,884,786 for 2023 and 2022, respectively.
(b) Concept: AccumulatedProvisionForPensionsAndBenefits
Montana Operations Accumulated Provision for Pensions and Benefits (228.3) are $6,657,805 and $7,048,754 for 2023 and 2022, respectively.
(c) Concept: MiscellaneousCurrentAndAccruedLiabilities
Montana Operations Miscellaneous Current and Accrued Liabilities (242) are $55,636,299 and $60,534,114 for 2023 and 2022, respectively.
(d) Concept: CustomerAdvancesForConstruction
Montana Operations Customer Advances for Construction (252) are $107,139,354 and $95,393,208 for 2023 and 2022, respectively.

Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

09/30/2023
Year/Period of Report

End of:
2023
/
Q3
STATEMENT OF INCOME

Quarterly

  1. Report in column (c) the current year to date balance. Column (c) equals the total of adding the data in column (g) plus the data in column (i) plus the data in column (k). Report in column (d) similar data for the previous year. This information is reported in the annual filing only.
  2. Enter in column (e) the balance for the reporting quarter and in column (f) the balance for the same three month period for the prior year.
  3. Report in column (g) the quarter to date amounts for electric utility function; in column (i) the quarter to date amounts for gas utility, and in column (k) the quarter to date amounts for other utility function for the current year quarter.
  4. Report in column (h) the quarter to date amounts for electric utility function; in column (j) the quarter to date amounts for gas utility, and in column (l) the quarter to date amounts for other utility function for the prior year quarter.
  5. If additional columns are needed, place them in a footnote.

Annual or Quarterly if applicable

  1. Do not report fourth quarter data in columns (e) and (f)
  2. Report amounts for accounts 412 and 413, Revenues and Expenses from Utility Plant Leased to Others, in another utility column in a similar manner to a utility department. Spread the amount(s) over Lines 2 thru 26 as appropriate. Include these amounts in columns (c) and (d) totals.
  3. Report amounts in account 414, Other Utility Operating Income, in the same manner as accounts 412 and 413 above.
  4. Use page 122 for important notes regarding the statement of income for any account thereof.
  5. Give concise explanations concerning unsettled rate proceedings where a contingency exists such that refunds of a material amount may need to be made to the utility's customers or which may result in material refund to the utility with respect to power or gas purchases. State for each year effected the gross revenues or costs to which the contingency relates and the tax effects together with an explanation of the major factors which affect the rights of the utility to retain such revenues or recover amounts paid with respect to power or gas purchases.
  6. Give concise explanations concerning significant amounts of any refunds made or received during the year resulting from settlement of any rate proceeding affecting revenues received or costs incurred for power or gas purchases, and a summary of the adjustments made to balance sheet, income, and expense accounts.
  7. If any notes appearing in the report to stockholders are applicable to the Statement of Income, such notes may be included at page 122.
  8. Enter on page 122 a concise explanation of only those changes in accounting methods made during the year which had an effect on net income, including the basis of allocations and apportionments from those used in the preceding year. Also, give the appropriate dollar effect of such changes.
  9. Explain in a footnote if the previous year's/quarter's figures are different from that reported in prior reports.
  10. If the columns are insufficient for reporting additional utility departments, supply the appropriate account titles report the information in a footnote to this schedule.
Line No.
Title of Account
(a)
(Ref.) Page No.
(b)
Total Current Year to Date Balance for Quarter/Year
(c)
Total Prior Year to Date Balance for Quarter/Year
(d)
Current 3 Months Ended - Quarterly Only - No 4th Quarter
(e)
Prior 3 Months Ended - Quarterly Only - No 4th Quarter
(f)
Electric Utility Current Year to Date (in dollars)
(g)
Electric Utility Previous Year to Date (in dollars)
(h)
Gas Utiity Current Year to Date (in dollars)
(i)
Gas Utility Previous Year to Date (in dollars)
(j)
Other Utility Current Year to Date (in dollars)
(k)
Other Utility Previous Year to Date (in dollars)
(l)
1
UtilityOperatingIncomeAbstract
UTILITY OPERATING INCOME
2
OperatingRevenues
Operating Revenues (400)
300
1,244,745,355
1,060,628,035
353,131,731
305,941,707
963,060,528
794,794,584
280,783,584
265,170,622
901,243
662,829
3
OperatingExpensesAbstract
Operating Expenses
4
OperationExpense
Operation Expenses (401)
320
689,019,407
547,649,692
186,089,750
150,243,227
492,748,175
364,769,062
195,531,065
182,369,543
740,167
511,087
5
MaintenanceExpense
Maintenance Expenses (402)
320
43,205,347
41,975,343
14,077,806
14,395,255
36,350,916
35,779,801
6,822,223
6,144,708
32,207
50,835
6
DepreciationExpense
Depreciation Expense (403)
336
134,821,225
124,749,237
44,474,042
41,565,910
111,886,274
104,290,590
22,904,275
20,428,119
30,676
30,528
7
DepreciationExpenseForAssetRetirementCosts
Depreciation Expense for Asset Retirement Costs (403.1)
336
8
AmortizationAndDepletionOfUtilityPlant
Amort. & Depl. of Utility Plant (404-405)
336
11,908,167
9,754,395
3,998,805
3,288,820
7,203,594
5,464,311
4,704,573
4,290,084
9
AmortizationOfElectricPlantAcquisitionAdjustments
Amort. of Utility Plant Acq. Adj. (406)
336
11,326,329
11,326,329
3,775,443
3,775,443
11,961,208
11,961,208
634,879
634,879
10
AmortizationOfPropertyLossesUnrecoveredPlantAndRegulatoryStudyCosts
Amort. Property Losses, Unrecov Plant and Regulatory Study Costs (407)
11
AmortizationOfConversionExpenses
Amort. of Conversion Expenses (407.2)
12
RegulatoryDebits
Regulatory Debits (407.3)
60,068,509
17,975,039
7,252,093
10,415,334
36,732,944
7,405,870
23,335,565
10,569,169
13
RegulatoryCredits
(Less) Regulatory Credits (407.4)
41,244,355
23,614,049
5,667,373
16,190,300
23,198,948
13,078,398
18,045,407
10,535,650
14
TaxesOtherThanIncomeTaxesUtilityOperatingIncome
Taxes Other Than Income Taxes (408.1)
262
138,875,801
146,205,879
45,472,935
48,564,347
107,670,415
113,695,979
31,163,532
32,459,739
41,853
50,160
15
IncomeTaxesOperatingIncome
Income Taxes - Federal (409.1)
262
6,600,726
11,216,872
435,685
3,400,020
3,269,987
4,401,451
3,313,221
6,806,823
17,519
8,598
16
IncomeTaxesUtilityOperatingIncomeOther
Income Taxes - Other (409.1)
262
11,520,287
4,895,550
2,055,341
1,314,473
9,894,087
2,817,428
1,620,161
2,075,158
6,039
2,964
17
ProvisionsForDeferredIncomeTaxesUtilityOperatingIncome
Provision for Deferred Income Taxes (410.1)
234, 272
75,575,673
57,664,376
27,291,058
23,936,007
62,399,566
44,572,022
13,184,303
13,098,397
8,196
6,044
18
ProvisionForDeferredIncomeTaxesCreditOperatingIncome
(Less) Provision for Deferred Income Taxes-Cr. (411.1)
234, 272
88,326,369
74,570,716
30,474,913
29,585,215
65,718,291
51,258,576
22,608,078
23,312,140
19
InvestmentTaxCreditAdjustments
Investment Tax Credit Adj. - Net (411.4)
266
66,072
83,348
15,215
19,494
66,072
83,348
20
GainsFromDispositionOfPlant
(Less) Gains from Disp. of Utility Plant (411.6)
21
LossesFromDispositionOfServiceCompanyPlant
Losses from Disp. of Utility Plant (411.7)
22
GainsFromDispositionOfAllowances
(Less) Gains from Disposition of Allowances (411.8)
3
3
3
23
LossesFromDispositionOfAllowances
Losses from Disposition of Allowances (411.9)
24
AccretionExpense
Accretion Expense (411.10)
25
UtilityOperatingExpenses
TOTAL Utility Operating Expenses (Enter Total of lines 4 thru 24)
1,053,284,675
875,144,596
297,894,087
255,103,824
791,133,855
630,737,397
261,290,554
243,759,071
860,265
648,128
27
NetUtilityOperatingIncome
Net Util Oper Inc (Enter Tot line 2 less 25)
191,460,680
185,483,439
55,237,644
50,837,883
171,926,673
164,057,187
19,493,030
21,411,551
40,978
14,701
28
OtherIncomeAndDeductionsAbstract
Other Income and Deductions
29
OtherIncomeAbstract
Other Income
30
NonutilityOperatingIncomeAbstract
Nonutilty Operating Income
31
RevenuesFromMerchandisingJobbingAndContractWork
Revenues From Merchandising, Jobbing and Contract Work (415)
421,966
440,198
131,123
163,458
32
CostsAndExpensesOfMerchandisingJobbingAndContractWork
(Less) Costs and Exp. of Merchandising, Job. & Contract Work (416)
150,315
177,728
34,580
97,952
33
RevenuesFromNonutilityOperations
Revenues From Nonutility Operations (417)
216,189
105,640
70,489
48,815
34
ExpensesOfNonutilityOperations
(Less) Expenses of Nonutility Operations (417.1)
432,721
407,505
133,508
114,831
35
NonoperatingRentalIncome
Nonoperating Rental Income (418)
36
EquityInEarningsOfSubsidiaryCompanies
Equity in Earnings of Subsidiary Companies (418.1)
119
376,256
400,587
124,610
105,960
37
InterestAndDividendIncome
Interest and Dividend Income (419)
303,704
1,419,423
73,799
313,883
38
AllowanceForOtherFundsUsedDuringConstruction
Allowance for Other Funds Used During Construction (419.1)
12,528,878
9,983,225
4,717,914
3,330,316
39
MiscellaneousNonoperatingIncome
Miscellaneous Nonoperating Income (421)
689,218
1,070,632
636,031
1,134,977
40
GainOnDispositionOfProperty
Gain on Disposition of Property (421.1)
41
OtherIncome
TOTAL Other Income (Enter Total of lines 31 thru 40)
11,822,227
9,892,034
4,064,596
2,305,122
42
OtherIncomeDeductionsAbstract
Other Income Deductions
43
LossOnDispositionOfProperty
Loss on Disposition of Property (421.2)
44
MiscellaneousAmortization
Miscellaneous Amortization (425)
45
Donations
Donations (426.1)
692,059
656,880
199,366
174,685
46
LifeInsurance
Life Insurance (426.2)
47
Penalties
Penalties (426.3)
17,755
2,519,800
17,639
48
ExpendituresForCertainCivicPoliticalAndRelatedActivities
Exp. for Certain Civic, Political & Related Activities (426.4)
323,283
261,788
59,993
70,221
49
OtherDeductions
Other Deductions (426.5)
646,434
406,902
579,395
534,095
50
OtherIncomeDeductions
TOTAL Other Income Deductions (Total of lines 43 thru 49)
386,663
3,031,566
302,397
289,189
51
TaxesApplicableToOtherIncomeAndDeductionsAbstract
Taxes Applic. to Other Income and Deductions
52
TaxesOtherThanIncomeTaxesOtherIncomeAndDeductions
Taxes Other Than Income Taxes (408.2)
262
1,551,291
2,097
1,552,383
699
53
IncomeTaxesFederal
Income Taxes-Federal (409.2)
262
8,479,108
3,156,357
3,356,735
2,278,054
54
IncomeTaxesOther
Income Taxes-Other (409.2)
262
236,061
853,349
317,704
1,291,306
55
ProvisionForDeferredIncomeTaxesOtherIncomeAndDeductions
Provision for Deferred Inc. Taxes (410.2)
234, 272
1,383,225
15,461,873
574,738
1,396,682
56
ProvisionForDeferredIncomeTaxesCreditOtherIncomeAndDeductions
(Less) Provision for Deferred Income Taxes-Cr. (411.2)
234, 272
1,892,631
10,626,222
697,123
4,488,242
57
InvestmentTaxCreditAdjustmentsNonutilityOperations
Investment Tax Credit Adj.-Net (411.5)
58
InvestmentTaxCredits
(Less) Investment Tax Credits (420)
59
TaxesOnOtherIncomeAndDeductions
TOTAL Taxes on Other Income and Deductions (Total of lines 52-58)
6,182,350
2,534,740
1,364,263
478,499
60
NetOtherIncomeAndDeductions
Net Other Income and Deductions (Total of lines 41, 50, 59)
5,253,214
4,325,728
3,002,730
2,115,812
61
InterestChargesAbstract
Interest Charges
62
InterestOnLongTermDebt
Interest on Long-Term Debt (427)
81,515,980
71,903,015
27,735,745
25,596,606