34.00634.07434.00734.075777934.00834.0762023The Workiva PlatformQ234.00934.077NorthWestern Corporation2023-06-3034.01034.078202334.011134.079Q22NorthWestern Corporation34.01234.0802023-06-30334.01334.0812023Q24NorthWestern Corporation34.01434.0822023-06-30534.01534.08320236Q234.01634.084NorthWestern Corporation72023-06-3034.01734.0858202334.01834.086Q2NorthWestern Corporation1034.01934.0872023-06-301134.02034.0882023Q213NorthWestern Corporation34.02134.0892023-06-301534.02234.090202316Q234.02334.091NorthWestern Corporation2023-06-3034.02434.092202334.02534.093Q2NorthWestern Corporation34.02634.0942023-06-3034.02734.0952023Q2NorthWestern Corporation34.02834.0962023-06-3034.02934.0972023Q234.03034.098NorthWestern Corporation2023-06-3034.03134.099202334.03234.100NorthWestern CorporationQ22023NorthWestern Corporation34.03334.1012023-06-30Q2NorthWestern Corporation34.03434.10220232023Q2NorthWestern Corporation34.03534.103Q22023-06-3034.03634.104122023Q234.03734.105334.03834.106O434.10734.039534.04034.1082023-06-30634.04134.109734.04234.110834.04334.111C001789934.04434.11271034.045834.1131134.04634.1141234.04734.1151334.04834.1161434.04934.117NorthWestern Corporation2023-06-301534.050Montana Operations34.1185202334.11961634.051Q2NorthWestern Corporation1734.05234.1202023-06-301834.05334.1212023Q21934.05434.122NorthWestern Corporation2023-06-302034.05534.12320232134.05634.124Q2NorthWestern Corporation2234.05734.1252023-06-302334.05834.12620232Q2NorthWestern Corporation2434.059334.1272023-06-302534.06034.12842023Q22634.06134.129NorthWestern Corporation2023-06-302734.06234.13020232834.06334.131Q2NorthWestern Corporation2934.06434.1322023-06-303034.06534.1332023Q2NorthWestern Corporation3234.06634.1342023-06-303334.06734.1352023Q23434.06834.136NorthWestern Corporation2023-06-3034.00134.06934.137202334.00234.07034.138Q2NorthWestern Corporation676834.00334.07134.1392023-06-3034.00434.07234.1402023Q2NorthWestern Corporation34.07334.00534.1412023-06-3034.21034.14234.21134.1432334.21234.1442434.21334.14534.21434.14634.21534.14734.21634.14834.21734.14934.21834.15034.21934.15134.22034.15234.22134.15334.22234.15434.22334.15534.22434.15634.22534.15734.22634.15834.22734.15934.22834.16034.22934.16134.23034.16234.23134.16334.23234.16434.23334.16511234.234234.166South Dakota Operations34.235334.167334.236434.168434.237534.169534.238634.170634.239734.171734.240834.172834.241934.173934.2421034.1741034.2431134.1751134.24434.1761234.24534.1771434.24634.1781534.24734.1791634.24834.1801734.24934.1811834.25034.1821934.25134.1832034.25234.18434.25334.18534.25434.18634.25534.18734.25634.18834.25734.18934.25834.19034.25934.19134.26034.19234.26134.19334.26234.19434.26334.19534.26434.19634.26534.19734.26734.19834.26834.19934.26934.20034.27034.20134.27234.20234.27334.20334.27434.20434.27534.20534.54134.20634.20734.20834.209 C001789 Portland General Electric Company NWMT NWMT NF MONTANA OATT COLSTRIP COLSTRIP 2023-01-012023-06-30 C001789 Powerex Corporation BPAT PPW LFP MONTANA OATT BPAT.NWMT JEFF 2023-01-012023-06-30 C001789 Rainbow Electric Marketing Corp. WAPA BPAT NF MONTANA OATT GREATFALLS BPAT.NWMT 2023-01-012023-06-30 C001789 Mercuria Energy America, LLC GWA PPW NF MONTANA OATT GLWND1 BRDY 2023-01-012023-06-30 C001789 Town of Philipsburg  Town of Philipsburg  Town of Philipsburg  FNO  Montana OATT  Philipsburg Substation  Philipsburg, MT 2023-01-012023-06-30 C001789 FAS 106 (Montana) - Docket 93.6.24 and Docket 2009.9.129 2023-06-30 C001789 The Energy Authority PPW BPAT NF MONTANA OATT BRDY BPAT.NWMT 2023-01-012023-06-30 C001789 Portland General Electric Company AVA AVA NF MONTANA OATT COLSTRIP AVAT.NWMT 2023-01-012023-06-30 C001789 Puget Sound Energy Marketing AVA MLCK NF MONTANA OATT COLSTRIP MLCK 2023-01-012023-06-30 C001789 Macquarie Energy, LLC NWMT BPAT NF MONTANA OATT SOUTHPEAK BPAT.NWMT 2023-01-012023-06-30 C001789 Talen Montana, LLC  Avista Energy  Colstrip Steam Electric Station  FNO  Montana OATT  Colstrip  Nichols Pump Sub 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. NWMT BPAT NF MONTANA OATT MATL.NWMT BPAT.NWMT 2023-01-012023-06-30 C001789 ferc:ElectricUtilityMember 2022-01-012022-06-30 C001789 2023-03-31 C001789 Puget Sound Energy Marketing NWMT BPAT SFP MONTANA OATT COLSTRIP BPAT.NWMT 2023-01-012023-06-30 C001789 Guzman Energy, LLC PPW BPAT SFP MONTANA OATT YTP BPAT.NWMT 2023-01-012023-06-30 C001789 Guzman Energy, LLC PPW AVA NF MONTANA OATT BRDY AVAT.NWMT 2023-01-012023-06-30 C001789 Mercuria Energy America, LLC WAPA BPAT NF MONTANA OATT GREATFALLS BPAT.NWMT 2023-01-012023-06-30 C001789 BPA Residential Exchange Program (Montana) - Docket 2018.8.49 Order 7630; Annual Amortization 2023-04-012023-06-30 C001789 CP Energy Marketing (US) Inc. BPAT NWMT NF MONTANA OATT BPAT.NWMT NWMT.SYSTEM 2023-01-012023-06-30 C001789 Southwest Power Pool (SPP) SPP Various NF SCH 8 Various Various 2023-01-012023-06-30 C001789 ferc:GeneralPlantMemberferc:ElectricUtilityMember 2023-01-012023-06-30 C001789 Transalta Energy Marketing (US) Inc. PPW BPAT NF MONTANA OATT BRDY BPAT.NWMT 2023-01-012023-06-30 C001789 Puget Sound Energy Marketing PPW PPW NF MONTANA OATT MLCK BRDY 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. AVA GWA NF MONTANA OATT AVAT.NWMT GLWND2 2023-01-012023-06-30 C001789 Dynasty Power Inc. BPAT PPW NF MONTANA OATT BPAT.NWMT BRDY 2023-01-012023-06-30 C001789 Amortization of 2022-01-012022-06-30 C001789 Rainbow Electric Marketing Corp. NWMT AVA NF MONTANA OATT CANYONFERRY AVAT.NWMT 2023-01-012023-06-30 C001789 Ash Grove Cement  Energy Keepers Inc.  Ash Grove Cement  FNO  Montana OATT  Kerr  Clancy, MT 2023-01-012023-06-30 C001789 Pension Plan (South Dakota) 2023-03-31 C001789 SIS Studiesferc:GenerationStudiesMember 2023-01-012023-06-30 C001789 Rounding 2023-01-012023-06-30 C001789 Aberdeen Manufactured Gas Plant (South Dakota) - Docket NG 11-003 2023-04-012023-06-30 C001789 Guzman Energy, LLC WAPA WAPA NF MONTANA OATT GREATFALLS CROSSOVER 2023-01-012023-06-30 C001789 The Energy Authority WAPA BPAT NF MONTANA OATT CROSSOVER BPAT.NWMT 2023-01-012023-06-30 C001789 Excess Deferred Income Taxes (South Dakota) 2023-06-30 C001789 Brookfield Renewable Trading and Marketing LP WAPA BPAT NF MONTANA OATT CROSSOVER BPAT.NWMT 2023-01-012023-06-30 C001789 Flow-through Income Taxes (Montana) 2023-01-012023-06-30 C001789 ferc:OtherProductionPlantMemberferc:ElectricUtilityMember 2023-01-012023-06-30 C001789 Mercuria Energy America, LLC PPW WAPA NF MONTANA OATT YTP CROSSOVER 2023-01-012023-06-30 C001789 Excess Deferred Income Taxes (Montana) 2023-04-012023-06-30 C001789 Manufactured Gas Plants (South Dakota) - Docket NG 11-003 2023-06-30 C001789 Energy Keepers Inc. NWMT PPW NF MONTANA OATT COLSTRIP YTP 2023-01-012023-06-30 C001789 Rainbow Electric Marketing Corp. NWMT AVA NF MONTANA OATT CLEARWATER AVAT.NWMT 2023-01-012023-06-30 C001789 Asset Retirement Obligation (Montana) 2023-03-31 C001789 Flow-through Income Taxes (South Dakota) 2023-03-31 C001789 Basin Electric Power Cooperative  Morgan Stanley, WAPA  Basin Electric Power Cooperative  FNO  Montana OATT  Various in Montana  Various NWMT & WAUW 2023-01-012023-06-30 C001789 Mercuria Energy America, LLC WAPA PPW NF MONTANA OATT GREATFALLS JEFF 2023-01-012023-06-30 C001789 Compensated Absences (Montana) - Docket 97.11.219 2023-03-31 C001789 ferc:JulyMember South Dakota Operations 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. GWA AVA NF MONTANA OATT GLWND2 AVAT.NWMT 2023-01-012023-06-30 C001789 Property Tax Tracker (Montana) - Docket 2017.11.86 - Order 7580a; Annual Amortization 2023-04-012023-06-30 C001789 2023-01-012023-03-31 C001789 PacifiCorp NWMT PACE NF MONTANA OATT NWMTIMBALANC BRDY 2023-01-012023-06-30 C001789 CP Energy Marketing (US) Inc. NWMT PACE NF MONTANA OATT MATL.NWMT BRDY 2023-01-012023-06-30 C001789 EDF Trading North America, LLC NWMT AVA NF MONTANA OATT COLSTRIP AVAT.NWMT 2023-01-012023-06-30 C001789 Puget Sound Energy Marketing NWMT AVA NF MONTANA OATT COLSTRIP AVAT.NWMT 2023-01-012023-06-30 C001789 CHS, Inc.  Morgan Stanley  CHS, Inc.  FNO  Montana OATT  MATL.NWMT  Various in Montana 2023-01-012023-06-30 C001789 Excess Deferred Income Taxes (South Dakota) 2023-03-31 C001789 Morgan Stanley Capital Group, Inc. AVA NWMT SFP MONTANA OATT AVAT.NWMT MATL.NWMT 2023-01-012023-06-30 C001789 Natural Gas Regulatory Deferrals (Montana) 2023-04-012023-06-30 C001789 EDF Trading North America, LLC BPAT NWMT NF MONTANA OATT BPAT.NWMT NWMT.SYSTEM 2023-01-012023-06-30 C001789 Manufactured Gas Plants (South Dakota) - Docket NG 11-003 2023-01-012023-06-30 C001789 EDF Trading North America, LLC NWMT PPW NF MONTANA OATT COLSTRIP JEFF 2023-01-012023-06-30 C001789 ferc:JuneMember South Dakota Operations 2023-01-012023-06-30 C001789 Powerex Corporation NWMT PACE NF MONTANA OATT MATL.NWMT JEFF 2023-01-012023-06-30 C001789 Powerex Corporation WAPA PPW NF MONTANA OATT CROSSOVER YTP 2023-01-012023-06-30 C001789 Portland General Electric Company BPAT NWMT NF MONTANA OATT BPAT.NWMT COLSTRIP 2023-01-012023-06-30 C001789 Natural Gas Transmission Verification Program (Montana) - Docket D2016.11.88 2023-06-30 C001789 The Energy Authority BPAT WAPA NF MONTANA OATT BPAT.NWMT CROSSOVER 2023-01-012023-06-30 C001789 Other 2022-01-012022-06-30 C001789 Asset Retirement Obligation (South Dakota) 2023-04-012023-06-30 C001789 Transalta Energy Marketing (US) Inc. NWMT PACE NF MONTANA OATT MATL.NWMT JEFF 2023-01-012023-06-30 C001789 2021-12-31 C001789 The Energy Authority BPAT PPW NF MONTANA OATT BPAT.NWMT BRDY 2023-01-012023-06-30 C001789 ferc:FebruaryMember Montana Operations 2023-01-012023-06-30 C001789 Deferred Gas Storage Sales (Montana) - Docket D2001.1.1; Amortization 2001 - 2039 2023-03-31 C001789 Morgan Stanley Capital Group, Inc. WAUW NWMT NF MONTANA OATT GREATFALLS MATL.NWMT 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. NWMT NWMT NF MONTANA OATT MATL.NWMT NWMT.SYSTEM 2023-01-012023-06-30 C001789 Iberdrola Renewables Inc. BPAT AVA NF MONTANA OATT BPAT.NWMT AVAT.NWMT 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. PPW BPAT SFP MONTANA OATT BRDY BPAT.NWMT 2023-01-012023-06-30 C001789 ferc:GasUtilityMember 2022-01-012022-06-30 C001789 Morgan Stanley Capital Group, Inc. PACE NWMT SFP MONTANA OATT BRDY MATL.NWMT 2023-01-012023-06-30 C001789 Portland General Electric Company PGE PPW NF MONTANA OATT COLSTRIP MLCK 2023-01-012023-06-30 C001789 Basin Electric Power Cooperative PPW WAPA SFP MONTANA OATT YTP CROSSOVER 2023-01-012023-06-30 C001789 Portland General Electric Company NWMT BPAT NF MONTANA OATT COLSTRIP BPAT.NWMT 2023-01-012023-06-30 C001789 Other Noncash Charges to Income, Net 2022-01-012022-06-30 C001789 MAG Energy Solutions PACE NWMT NF MONTANA OATT BRDY MATL.NWMT 2023-01-012023-06-30 C001789 Southwest Power Pool (SPP) SPP Various LFP SCH 11 Various Various 2023-01-012023-06-30 C001789 ferc:JanuaryMember South Dakota Operations 2023-01-012023-06-30 C001789 ferc:GenerationStudiesMember Optional Studies 2023-01-012023-06-30 C001789 Basin Electric Power Cooperative BPAT NWMT NF MONTANA OATT BPAT.NWMT NWMT.SYSTEM 2023-01-012023-06-30 C001789 ferc:MarchMember South Dakota Operations 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. GWA AVA NF MONTANA OATT GLWND1 AVAT.NWMT 2023-01-012023-06-30 C001789 Aberdeen Manufactured Gas Plant (South Dakota) - Docket NG 11-003 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. GWA NWMT NF MONTANA OATT GLWND2 NWMT.SYSTEM 2023-01-012023-06-30 C001789 Macquarie Energy, LLC PPW BPAT SFP MONTANA OATT BRDY BPAT.NWMT 2023-01-012023-06-30 C001789 Other Noncash Charges to Income, Net 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. NWMT GWA NF MONTANA OATT MATL.NWMT GLWND1 2023-01-012023-06-30 C001789 Market Monitoring & Compliance 2023-01-012023-03-31 C001789 Morgan Stanley Capital Group, Inc. PACE NWMT NF MONTANA OATT YTP MATL.NWMT 2023-01-012023-06-30 C001789 Basin Creek Capital Lease (Montana) 2023-06-30 C001789 Unbilled Revenues (South Dakota) 2023-06-30 C001789 Cycle Power Partners, LLC NWMT PACE NF MONTANA OATT HORSESHOE BRDY 2023-01-012023-06-30 C001789 Market Monitoring & Compliance 2023-01-012023-06-30 C001789 Western Area Power Administration WAPA WAPA NF MONTANA OATT GREATFALLS CROSSOVER 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. NWMT NWMT NF MONTANA OATT HARDIN MATL.NWMT 2023-01-012023-06-30 C001789 ferc:TransmissionStudiesMember 2023-01-012023-06-30 C001789 South Dakota Operations 2023-01-012023-06-30 C001789 Atlas Power, LLC  Portland General Electric  Atlas Power, LLC  FNO  Montana OATT  Colstrip  Butte, MT 2023-01-012023-06-30 C001789 Shell Energy North America BPAT WAPA NF MONTANA OATT BPAT.NWMT CROSSOVER 2023-01-012023-06-30 C001789 Field Inventory (South Dakota) - Docket EL 14-106 2023-01-012023-06-30 C001789 Rainbow Electric Marketing Corp. BPAT PPW NF MONTANA OATT BPAT.NWMT BRDY 2023-01-012023-06-30 C001789 Montana Operationsferc:Quarter1Member 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. BPAT GWA NF MONTANA OATT BPAT.NWMT GLWND1 2023-01-012023-06-30 C001789 Current Ad Valorem True-Up (South Dakota) - Docket GE98-001 2023-06-30 C001789 Morgan Stanley Capital Group, Inc. NWMT GWA NF MONTANA OATT MATL.NWMT GLWND2 2023-01-012023-06-30 C001789 Mercuria Energy America, LLC PPW PPW NF MONTANA OATT BRDY YTP 2023-01-012023-06-30 C001789 Montana Public Service Commission (Montana) - Docket 2017.9.78 - Order 7568 2023-04-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. NWMT NWMT SFP MONTANA OATT COLSTRIP MATL.NWMT 2023-01-012023-06-30 C001789 Pension Plan (Montana) 2023-03-31 C001789 Shell Energy North America NWMT BPAT NF MONTANA OATT CLEARWATER BPAT.NWMT 2023-01-012023-06-30 C001789 ferc:GasUtilityMember 2023-01-012023-06-30 C001789 Transalta Energy Marketing (US) Inc. NWMT AVA NF MONTANA OATT MATL.NWMT AVAT.NWMT 2023-01-012023-06-30 C001789 ferc:TransmissionStudiesMember Line Interconnection Studies 2023-01-012023-06-30 C001789 Tax Cut Jobs Act Deferral (South Dakota) - Docket NG-0095 and GE17-003 2023-01-012023-06-30 C001789 MONTANA 2023-01-012023-06-30 C001789 The Energy Authority WAPA PPW NF MONTANA OATT CROSSOVER YTP 2023-01-012023-06-30 C001789 EDF Trading North America, LLC AVA NWMT NF MONTANA OATT AVAT.NWMT NWMT.SYSTEM 2023-01-012023-06-30 C001789 Aberdeen Manufactured Gas Plant (South Dakota) - Docket NG 11-003 2023-03-31 C001789 Morgan Stanley Capital Group, Inc. NWMT WAUW NF MONTANA OATT MATL.NWMT CROSSOVER 2023-01-012023-06-30 C001789 Mercuria Energy America, LLC WAPA PPW NF MONTANA OATT GREATFALLS YTP 2023-01-012023-06-30 C001789 Idaho Power Company PACE NWMT NF MONTANA OATT JEFF MLCK 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. NWMT AVA SFP MONTANA OATT HARDIN AVAT.NWMT 2023-01-012023-06-30 C001789 Unbilled Revenues (South Dakota) 2023-03-31 C001789 Compensated Absences (Montana) - Docket 97.11.219 2023-04-012023-06-30 C001789 Idaho Power Company AVA IPCO NF MONTANA OATT AVAT.NWMT TNDY 2023-01-012023-06-30 C001789 ferc:OtherUtility3Member 2023-06-30 C001789 Montana Operationsferc:AprilMember 2023-01-012023-06-30 C001789 Asset Retirement Obligation (Montana) 2023-06-30 C001789 Avangrid Renewables, LLC NWMT AVA NF MONTANA OATT MATL.NWMT AVAT.NWMT 2023-01-012023-06-30 C001789 Transalta Energy Marketing (US) Inc. BPAT WAPA NF MONTANA OATT BPAT.NWMT CROSSOVER 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. BPAT NWMT NF MONTANA OATT BPAT.NWMT MATL.NWMT 2023-01-012023-06-30 C001789 Current Ad Valorem True-Up (South Dakota) - Docket GE98-001 2023-01-012023-06-30 C001789 Southwest Power Pool (SPP) SPP Various LFP SCH 7 Various Various 2023-01-012023-06-30 C001789 Flow-through Income Taxes (South Dakota) 2023-06-30 C001789 Montana Public Service Commission Consumer Counsel Taxes (Montana) - Dockets 2017.9.78 and 2018.10.67 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. GWA NWMT NF MONTANA OATT GLWND1 MATL.NWMT 2023-01-012023-06-30 C001789 ferc:OctoberMember South Dakota Operations 2023-01-012023-06-30 C001789 ferc:OtherUtilityMember 2022-01-012022-06-30 C001789 Natural Gas Regulatory Deferrals (Montana) 2023-06-30 C001789 Macquarie Energy, LLC PPW NWMT NF MONTANA OATT BRDY NWMT.SYSTEM 2023-01-012023-06-30 C001789 The Energy Authority BPAT PPW NF MONTANA OATT BPAT.NWMT YTP 2023-01-012023-06-30 C001789 Montana Public Service Commission Consumer Counsel Taxes (Montana) - Dockets 2017.9.78 and 2018.10.67 2023-04-012023-06-30 C001789 (Less) (449.1) Provision for Rate Refunds 2023-01-012023-06-30 C001789 ExxonMobil Corporation  Talen Energy  ExxonMobil Corporation  FNO  Montana OATT  Colstrip  Billings, MT 2023-01-012023-06-30 C001789 Basin Electric Power Cooperative BPAT WAPA NF MONTANA OATT BPAT.NWMT GREATFALLS 2023-01-012023-06-30 C001789 Bonneville Power Administration BPAT PPW NF MONTANA OATT BPAT.NWMT ANTE 2023-01-012023-06-30 C001789 Great Falls Public Schools  Energy Keepers Inc.  Great Falls Public Schools  FNO  Montana OATT  Kerr  Great Falls, MT 2023-01-012023-06-30 C001789 Common Stock Dividend 2022-01-012022-06-30 C001789 2022-12-31 C001789 Shell Energy North America BPAT NWMT NF MONTANA OATT BPAT.NWMT NWMT.SYSTEM 2023-01-012023-06-30 C001789 EDF Trading North America, LLC NWMT NWMT NF MONTANA OATT COLSTRIP MATL.NWMT 2023-01-012023-06-30 C001789 Rainbow Electric Marketing Corp. WAPA BPAT NF MONTANA OATT CROSSOVER BPAT.NWMT 2023-01-012023-06-30 C001789 EDF Trading North America, LLC PPW NWMT NF MONTANA OATT BRDY NWMT.SYSTEM 2023-01-012023-06-30 C001789 Flow-through Income Taxes (Montana) 2023-06-30 C001789 Portland General Electric Company NWMT PPW NF MONTANA OATT COLSTRIP JEFF 2023-01-012023-06-30 C001789 Southwester Power Pool (MT) FNS 2023-01-012023-06-30 C001789 Montana Operationsferc:MayMember 2023-01-012023-06-30 C001789 EDF Trading North America, LLC BPAT NWMT NF MONTANA OATT BPAT.NWMT COLSTRIP 2023-01-012023-06-30 C001789 Rainbow Electric Marketing Corp. WAPA AVA NF MONTANA OATT GREATFALLS AVAT.NWMT 2023-01-012023-06-30 C001789 Rainbow Electric Marketing Corp. PACE NWMT NF MONTANA OATT BRDY MATL.NWMT 2023-01-012023-06-30 C001789 Avista Corporation AVA AVA NF MONTANA OATT COLSTRIP AVAT.NWMT 2023-01-012023-06-30 C001789 Asset Retirement Obligation (South Dakota) 2023-01-012023-06-30 C001789 Line of Credit (Repayments) Borrowings, Net 2023-01-012023-06-30 C001789 Powerex Corporation BPAT AVA NF MONTANA OATT BPAT.NWMT AVAT.NWMT 2023-01-012023-06-30 C001789 ScheduleRegionalTransmissionServiceRevenuesAbstract 2023-01-012023-06-30 C001789 Rainbow Electric Marketing Corp. BPAT NWMT NF MONTANA OATT BPAT.NWMT MATL.NWMT 2023-01-012023-06-30 C001789 Rainbow Electric Marketing Corp. PPW WAPA NF MONTANA OATT YTP CROSSOVER 2023-01-012023-06-30 C001789 Pension Plan (Montana) 2023-04-012023-06-30 C001789 Powerex Corporation PPW PPW NF MONTANA OATT YTP BRDY 2023-01-012023-06-30 C001789 Excess Deferred Income Taxes (Montana) 2023-06-30 C001789 Powerex Corporation BPAT NWMT NF MONTANA OATT BPAT.NWMT MATL.NWMT 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. NWMT PPW NF MONTANA OATT HARDIN BRDY 2023-01-012023-06-30 C001789 Barretts Minerals, Inc.  Energy Keepers inc.  Barretts Minerals, Inc.  FNO  Montana OATT  Kerr  Dillon, MT 2023-01-012023-06-30 C001789 Guzman Energy, LLC PPW WAPA NF MONTANA OATT YTP GREATFALLS 2023-01-012023-06-30 C001789 Rainbow Electric Marketing Corp. NWMT BPAT NF MONTANA OATT CLEARWATER BPAT.NWMT 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. BPAT NWMT SFP MONTANA OATT BPAT.NWMT MATL.NWMT 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. WAPA BPAT NF MONTANA OATT GREATFALLS BPAT.NWMT 2023-01-012023-06-30 C001789 Calumet Refining, LLC  Talen Energy  Calumet Montana Refining Company, Inc.  FNO  Montana OATT  Colstrip  Great Falls, MT 2023-01-012023-06-30 C001789 ferc:ElectricUtilityMember 2023-06-30 C001789 DFA Dairy Brands Fluid, LLC  Talen Energy  DFA Dairy Brands Fluid, LLC  FNO  Montana OATT  Colstrip  Various in Montana 2023-01-012023-06-30 C001789 Powerex Corporation PPW BPAT NF MONTANA OATT BRDY BPAT.NWMT 2023-01-012023-06-30 C001789 ferc:FebruaryMember South Dakota Operations 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. NWMT PACE NF MONTANA OATT MATL.NWMT JEFF 2023-01-012023-06-30 C001789 Energy Keepers Inc. NWMT BPAT NF MONTANA OATT KERR BPAT.NWMT 2023-01-012023-06-30 C001789 Transalta Energy Marketing (US) Inc. BPAT PPW NF MONTANA OATT BPAT.NWMT BRDY 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. AVA AVA NF MONTANA OATT COLSTRIP AVAT.NWMT 2023-01-012023-06-30 C001789 Excess Deferred Income Taxes (Montana) 2023-04-012023-06-30 C001789 Guzman Energy, LLC PPW WAPA NF MONTANA OATT YTP CROSSOVER 2023-01-012023-06-30 C001789 Natural Gas Transmission Verification Program (Montana) - Docket D2016.11.88 2023-01-012023-06-30 C001789 Common Stock Dividend 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. GWA PPW NF MONTANA OATT GLWND1 JEFF 2023-01-012023-06-30 C001789 Shell Energy North America WAPA BPAT NF MONTANA OATT CROSSOVER BPAT.NWMT 2023-01-012023-06-30 C001789 Southwest Power Pool FNS 2023-01-012023-06-30 C001789 SIS Studiesferc:TransmissionStudiesMember 2023-01-012023-06-30 C001789 Rainbow Electric Marketing Corp. WAPA PPW NF MONTANA OATT GREATFALLS BRDY 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. WAPA PPW NF MONTANA OATT GREATFALLS BRDY 2023-01-012023-06-30 C001789 Montana Operations 2023-01-012023-06-30 C001789 Macquarie Energy, LLC PPW NWMT SFP MONTANA OATT YTP NWMT.SYSTEM 2023-01-012023-06-30 C001789 Brookfield Renewable Trading and Marketing LP PPW WAPA NF MONTANA OATT YTP CROSSOVER 2023-01-012023-06-30 C001789 City of Great Falls  Energy Keepers Inc.  City of Great Falls  FNO  Montana OATT  Kerr  Various in Montana 2023-01-012023-06-30 C001789 Avista NF 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. NWMT AVA NF MONTANA OATT MATL.NWMT AVAT.NWMT 2023-01-012023-06-30 C001789 EDF Trading North America, LLC NWMT NWMT NF MONTANA OATT COLSTRIP COLSTRIP 2023-01-012023-06-30 C001789 FAS 112 (Montana) - Docket 93.6.24 and Docket 2009.9.129 2023-03-31 C001789 Excess Deferred Income Taxes (Montana) 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. AVA GWA NF MONTANA OATT AVAT.NWMT GLWND1 2023-01-012023-06-30 C001789 Western Area Power Administration WAPA WAPA NF MONTANA OATT CROSSOVER GREATFALLS 2023-01-012023-06-30 C001789 Powerex Corporation BPAT PPW NF MONTANA OATT BPAT.NWMT JEFF 2023-01-012023-06-30 C001789 Montana Public Service Commission Consumer Counsel Taxes (Montana) - Dockets 2017.9.78 and 2018.10.67 2023-03-31 C001789 FAC Studies 2023-01-012023-06-30 C001789 Dynasty Power Inc. NWMT BPAT NF MONTANA OATT MATL.NWMT BPAT.NWMT 2023-01-012023-06-30 C001789 Supply: 2023-01-012023-06-30 C001789 Asset Retirement Obligation (South Dakota) 2023-06-30 C001789 ferc:IntangiblePlantMemberferc:ElectricUtilityMember 2023-01-012023-06-30 C001789 Western Area Power Administration  WAPA  Western Area Power Administration  FNO  Montana OATT  Crossover  Various NWMT & WAUW 2023-01-012023-06-30 C001789 ferc:GenerationStudiesMember FEA Studies 2023-01-012023-06-30 C001789 OtterTail Power (for MISO) FNS 2023-01-012023-06-30 C001789 BPA Residential Exchange Program (Montana) - Docket 2018.8.49 Order 7630; Annual Amortization 2023-03-31 C001789 FAS 112 (Montana) - Docket 93.6.24 and Docket 2009.9.129 2023-06-30 C001789 CTC QF Over/Under Collections (Montana) - Docket 97.9.90 and Docket 2001.1.15; Annual Amortization 2023-06-30 C001789 Bonneville Power Admin NF 2023-01-012023-06-30 C001789 2023-04-012023-06-30 C001789 ferc:TransmissionStudiesMember FAC Studies 2023-01-012023-06-30 C001789 Energy Keepers Inc. NWMT AVA SFP MONTANA OATT KERR AVAT.NWMT 2023-01-012023-06-30 C001789 Western Area Power Administration WAPA PPW NF MONTANA OATT GREATFALLS YTP 2023-01-012023-06-30 C001789 Rainbow Electric Marketing Corp. BPAT WAPA NF MONTANA OATT BPAT.NWMT CROSSOVER 2023-01-012023-06-30 C001789 Field Inventory (South Dakota) - Docket EL 14-106 2023-06-30 C001789 Shell Energy North America NWMT BPAT NF MONTANA OATT MATL.NWMT BPAT.NWMT 2023-01-012023-06-30 C001789 The Energy Authority BPAT PPW NF MONTANA OATT BPAT.NWMT JEFF 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. NWMT BPAT NF MONTANA OATT KERR BPAT.NWMT 2023-01-012023-06-30 C001789 Bonneville Power Admin OLF 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. GWA NWMT NF MONTANA OATT GLWND1 NWMT.SYSTEM 2023-01-012023-06-30 C001789 SIS Studies 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. NWMT AVA NF MONTANA OATT HARDIN AVAT.NWMT 2023-01-012023-06-30 C001789 CP Energy Marketing (US) Inc. BPAT NWMT NF MONTANA OATT BPAT.NWMT MATL.NWMT 2023-01-012023-06-30 C001789 Mercuria Energy America, LLC WAPA PPW NF MONTANA OATT CROSSOVER YTP 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. BPAT NWMT NF MONTANA OATT BPAT.NWMT NWMT.SYSTEM 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. GWA BPAT NF MONTANA OATT GLWND2 BPAT.NWMT 2023-01-012023-06-30 C001789 Rainbow Electric Marketing Corp. WAPA PPW NF MONTANA OATT CROSSOVER BRDY 2023-01-012023-06-30 C001789 Day Ahead & Real Time Admin 2023-01-012023-06-30 C001789 Excess Deferred Income Taxes (Montana) 2023-06-30 C001789 Beartooth Electric Cooperative, Inc.  WAPA & Energy Keepers Inc.  Beartooth Electric Cooperative, Inc.  FNO  Montana OATT  Fort Peck & Kerr  Various in Montana 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. PACE NWMT NF MONTANA OATT BRDY MATL.NWMT 2023-01-012023-06-30 C001789 Day Ahead & Real Time Admin 2023-01-012023-03-31 C001789 Property Tax Tracker (Montana) - Docket 2017.11.86 - Order 7580a; Annual Amortization 2023-03-31 C001789 Morgan Stanley Capital Group, Inc. NWMT WAUW NF MONTANA OATT HARDIN CROSSOVER 2023-01-012023-06-30 C001789 Powerex Corporation PPW BPAT NF MONTANA OATT YTP BPAT.NWMT 2023-01-012023-06-30 C001789 Treasury Stock Activity 2023-01-012023-06-30 C001789 Property Tax Tracker (Montana) - Docket 2017.11.86 - Order 7580a; Annual Amortization 2023-04-012023-06-30 C001789 ferc:SeptemberMember South Dakota Operations 2023-01-012023-06-30 C001789 ferc:TransmissionPlantMemberferc:ElectricUtilityMember 2023-01-012023-06-30 C001789 Tax Cut Jobs Act Deferral (South Dakota) - Docket NG-0095 and GE17-003 2023-03-31 C001789 Avista Corporation AVA AVA SFP MONTANA OATT COLSTRIP AVAT.NWMT 2023-01-012023-06-30 C001789 Property Tax Tracker (Montana) - Docket 2017.11.86 - Order 7580a; Annual Amortization 2023-01-012023-06-30 C001789 Basin Electric Power Cooperative  Basin Electric & WAPA  Basin Electric Power Cooperative  FNO  Montana OATT  Crossover    Various NWMT & WAUW 2023-01-012023-06-30 C001789 Pension Plan (South Dakota) 2023-06-30 C001789 Investment in Equity Securities 2022-01-012022-06-30 C001789 Morgan Stanley Capital Group, Inc. GWA NWMT NF MONTANA OATT GLWND2 MATL.NWMT 2023-01-012023-06-30 C001789 Western Area Power Administration WAUW NWMT SFP MONTANA OATT GREATFALLS GTFALLSNWMT 2023-01-012023-06-30 C001789 Montana Resources  Energy Keepers, Inc.  Montana Resources  FNO  Montana OATT  BPAT.NWMT & Kerr  Butte, MT 2023-01-012023-06-30 C001789 Line Interconnection Studies 2023-01-012023-06-30 C001789 Guzman Energy, LLC PPW AVA SFP MONTANA OATT YTP AVAT.NWMT 2023-01-012023-06-30 C001789 MONTANA POINT-TO-POINT      2023-01-012023-06-30 C001789 Western Area Power Administration PPW WAPA NF MONTANA OATT YTP CROSSOVER 2023-01-012023-06-30 C001789 ferc:CommonUtilityMember 2023-06-30 C001789 Morgan Stanley Capital Group, Inc. AVA NWMT NF MONTANA OATT AVAT.NWMT MATL.NWMT 2023-01-012023-06-30 C001789 Shell Energy North America BPAT NWMT NF MONTANA OATT BPAT.NWMT MATL.NWMT 2023-01-012023-06-30 C001789 Powerex Corporation BPAT PPW NF MONTANA OATT BPAT.NWMT YTP 2023-01-012023-06-30 C001789 BRYANT, CITY OF WAPA BRYANT LFP VOL 2 HURON 115 KV BUS BRYANT 25 KV 2023-01-012023-06-30 C001789 Unbilled Revenues (South Dakota) 2023-04-012023-06-30 C001789 ferc:ElectricUtilityMemberferc:DistributionPlantMember 2023-01-012023-06-30 C001789 Natural Gas Transmission Verification Program (Montana) - Docket D2016.11.88 2023-04-012023-06-30 C001789 Deferred Gas Storage Sales (Montana) - Docket D2001.1.1; Amortization 2001 - 2039 2023-04-012023-06-30 C001789 Excess Deferred Income Taxes (Montana) 2023-03-31 C001789 Powerex Corporation BPAT PPW LFP MONTANA OATT BPAT.NWMT BRDY 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. AVA BPAT NF MONTANA OATT AVAT.NWMT BPAT.NWMT 2023-01-012023-06-30 C001789 Transalta Energy Marketing (US) Inc. PPW PPW NF MONTANA OATT YTP ANTE 2023-01-012023-06-30 C001789 Other 2023-01-012023-06-30 C001789 FAS 106 (Montana) - Docket 93.6.24 and Docket 2009.9.129 2023-01-012023-06-30 C001789 Flow-through Income Taxes (South Dakota) 2023-04-012023-06-30 C001789 Portland General Electric Company NWMT PPW NF MONTANA OATT COLSTRIP BRDY 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. NWMT BPAT NF MONTANA OATT HARDIN BPAT.NWMT 2023-01-012023-06-30 C001789 ferc:Quarter2Member South Dakota Operations 2023-01-012023-06-30 C001789 ferc:OtherUtilityMember 2023-01-012023-06-30 C001789 ferc:GenerationStudiesMember 2023-01-012023-06-30 C001789 Powerex Corporation BPAT PPW NF MONTANA OATT BPAT.NWMT BRDY 2023-01-012023-06-30 C001789 Iberdrola Renewables Inc. AVA BPAT NF MONTANA OATT AVAT.NWMT BPAT.NWMT 2023-01-012023-06-30 C001789 Rainbow Electric Marketing Corp. NWMT PACE NF MONTANA OATT CLEARWATER BRDY 2023-01-012023-06-30 C001789 Debt Financing Costs 2022-01-012022-06-30 C001789 2022-06-30 C001789 Morgan Stanley Capital Group, Inc. BPAT PPW NF MONTANA OATT BPAT.NWMT BRDY 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. NWMT GWA NF MONTANA OATT HARDIN GLWND1 2023-01-012023-06-30 C001789 Montana State University - Bozeman  WAPA  Montana State University - Bozeman  FNO  Montana OATT  Fort Peck West  Great Falls, MT 2023-01-012023-06-30 C001789 Property Tax Tracker (Montana) - Docket 2017.11.86 - Order 7580a; Annual Amortization 2023-01-012023-06-30 C001789 Energy Keepers Inc. BPAT AVA NF MONTANA OATT BPAT.NWMT AVAT.NWMT 2023-01-012023-06-30 C001789 EDF Trading North America, LLC NWMT PPW NF MONTANA OATT COLSTRIP YTP 2023-01-012023-06-30 C001789 ferc:AprilMember South Dakota Operations 2023-01-012023-06-30 C001789 Current Ad Valorem True-Up (South Dakota) - Docket GE98-001 2023-03-31 C001789 Flow-through Income Taxes (South Dakota) 2023-01-012023-06-30 C001789 Western Area Power Administration WAPA WAPA SFP MONTANA OATT CROSSOVER GREATFALLS 2023-01-012023-06-30 C001789 Southwest Power Pool (SPP) SPP Various FNS SCH 9 Various Various 2023-01-012023-06-30 C001789 ferc:GenerationStudiesMember FAC Studies 2023-01-012023-06-30 C001789 Montana Public Service Commission Consumer Counsel Taxes (Montana) - Dockets 2017.9.78 and 2018.10.67 2023-06-30 C001789 Western Area Power Administration NWMT WAPA NF MONTANA OATT CANYONFERRY CROSSOVER 2023-01-012023-06-30 C001789 Shell Energy North America BPAT AVA NF MONTANA OATT BPAT.NWMT AVAT.NWMT 2023-01-012023-06-30 C001789 Shell Energy North America NWMT NWMT NF MONTANA OATT MATL.NWMT NWMT.SYSTEM 2023-01-012023-06-30 C001789 ferc:Quarter3Member South Dakota Operations 2023-01-012023-06-30 C001789 Optional Studies 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. NWMT NWMT NF MONTANA OATT JUDITHGAP MATL.NWMT 2023-01-012023-06-30 C001789 Basin Creek Capital Lease (Montana) 2023-01-012023-06-30 C001789 Excess Deferred Income Taxes (South Dakota) 2023-01-012023-06-30 C001789 Pension Plan (Montana) 2023-01-012023-06-30 C001789 The Energy Authority WAPA PPW NF MONTANA OATT CROSSOVER BRDY 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. NWMT BPAT SFP MONTANA OATT MATL.NWMT BPAT.NWMT 2023-01-012023-06-30 C001789 Rainbow Electric Marketing Corp. WAPA NWMT NF MONTANA OATT CROSSOVER NWMT.SYSTEM 2023-01-012023-06-30 C001789 Amortization of 2023-01-012023-06-30 C001789 Puget Sound Energy Marketing NWMT BPAT NF MONTANA OATT COLSTRIP BPAT.NWMT 2023-01-012023-06-30 C001789 ferc:AugustMember South Dakota Operations 2023-01-012023-06-30 C001789 Excess Deferred Income Taxes (South Dakota) 2023-06-30 C001789 Rainbow Electric Marketing Corp. BPAT AVA NF MONTANA OATT BPAT.NWMT AVAT.NWMT 2023-01-012023-06-30 C001789 Deferred Gas Storage Sales (Montana) - Docket D2001.1.1; Amortization 2001 - 2039 2023-01-012023-06-30 C001789 Compensated Absences (Montana) - Docket 97.11.219 2023-06-30 C001789 Energy Keepers Inc. NWMT BPAT LFP MONTANA OATT KERR BPAT.NWMT 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. NWMT PACE NF MONTANA OATT HARDIN JEFF 2023-01-012023-06-30 C001789 Flow-through Income Taxes (Montana) 2023-04-012023-06-30 C001789 2022-01-012022-06-30 C001789 Excess Deferred Income Taxes (South Dakota) 2023-03-31 C001789 Transalta Energy Marketing (US) Inc. NWMT BPAT NF MONTANA OATT MATL.NWMT BPAT.NWMT 2023-01-012023-06-30 C001789 Energy Keepers Inc. NWMT PPW SFP MONTANA OATT COLSTRIP YTP 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. WAPA AVA NF MONTANA OATT GREATFALLS AVAT.NWMT 2023-01-012023-06-30 C001789 Western Area Power Administration WAPA PPW SFP MONTANA OATT CROSSOVER YTP 2023-01-012023-06-30 C001789 ferc:DecemberMember South Dakota Operations 2023-01-012023-06-30 C001789 PacifiCorp NWMT PPW NF MONTANA OATT COLSTRIP YTP 2023-01-012023-06-30 C001789 Brookfield Renewable Trading and Marketing LP WAPA PPW NF MONTANA OATT CROSSOVER YTP 2023-01-012023-06-30 C001789 Western Area Power Administration WAPA NWMT NF MONTANA OATT GREATFALLS NWMT.SYSTEM 2023-01-012023-06-30 C001789 Vigilante Elec. Coop OLF 2023-01-012023-06-30 C001789 Roseburg Forest Products Company  Shell Energy  Roseburg Forest Products Company  FNO  Montana OATT  BPAT.NWMT  Missoula, MT 2023-01-012023-06-30 C001789 Guzman Energy, LLC PPW BPAT NF MONTANA OATT YTP BPAT.NWMT 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. GWA BPAT NF MONTANA OATT GLWND1 BPAT.NWMT 2023-01-012023-06-30 C001789 Treasury Stock Activity 2022-01-012022-06-30 C001789 Asset Retirement Obligation (Montana) 2023-01-012023-06-30 C001789 Current Ad Valorem True-Up (South Dakota) - Docket GE98-001 2023-04-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. NWMT PACE NF MONTANA OATT MATL.NWMT BRDY 2023-01-012023-06-30 C001789 Puget Sound Energy Marketing AVA BPAT NF MONTANA OATT AVAT.NWMT BPAT.NWMT 2023-01-012023-06-30 C001789 Transalta Energy Marketing (US) Inc. AVA WAPA NF MONTANA OATT AVAT.NWMT CROSSOVER 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. BPAT PPW NF MONTANA OATT BPAT.NWMT JEFF 2023-01-012023-06-30 C001789 Aberdeen Manufactured Gas Plant (South Dakota) - Docket NG 11-003 2023-06-30 C001789 Dynasty Power Inc. PPW BPAT NF MONTANA OATT BRDY BPAT.NWMT 2023-01-012023-06-30 C001789 ferc:ElectricUtilityMember 2023-01-012023-06-30 C001789 The Energy Authority WAPA BPAT SFP MONTANA OATT CROSSOVER BPAT.NWMT 2023-01-012023-06-30 C001789 Pension Plan (Montana) 2023-06-30 C001789 Western Area Power Administration NWMT NWMT NF MONTANA OATT CANYONFERRY NWMT.SYSTEM 2023-01-012023-06-30 C001789 Line of Credit (Repayments) Borrowings, Net 2023-01-012023-06-30 C001789 Excess Deferred Income Taxes (South Dakota) 2023-01-012023-06-30 C001789 Rainbow Electric Marketing Corp. BPAT PPW NF MONTANA OATT BPAT.NWMT YTP 2023-01-012023-06-30 C001789 Excess Deferred Income Taxes (Montana) 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. NWMT GWA NF MONTANA OATT COLSTRIP GLWND2 2023-01-012023-06-30 C001789 Mercuria Energy America, LLC WAPA WAPA NF MONTANA OATT CROSSOVER GREATFALLS 2023-01-012023-06-30 C001789 Property Tax Tracker (Montana) - Docket 2017.11.86 - Order 7580a; Annual Amortization 2023-06-30 C001789 Compensated Absences (Montana) - Docket 97.11.219 2023-01-012023-06-30 C001789 Shell Energy North America AVA NWMT NF MONTANA OATT AVAT.NWMT NWMT.SYSTEM 2023-01-012023-06-30 C001789 Rainbow Electric Marketing Corp. BPAT NWMT NF MONTANA OATT BPAT.NWMT NWMT.SYSTEM 2023-01-012023-06-30 C001789 EDF Trading North America, LLC AVA AVA NF MONTANA OATT COLSTRIP AVAT.NWMT 2023-01-012023-06-30 C001789 MONTANA CHOICE TRANSMISSION      2023-01-012023-06-30 C001789 Puget Sound Energy Marketing BPAT NWMT NF MONTANA OATT BPAT.NWMT COLSTRIP 2023-01-012023-06-30 C001789 CP Energy Marketing (US) Inc. NWMT BPAT NF MONTANA OATT MATL.NWMT BPAT.NWMT 2023-01-012023-06-30 C001789 2023-06-30 C001789 Rainbow Electric Marketing Corp. PPW WAPA SFP MONTANA OATT YTP CROSSOVER 2023-01-012023-06-30 C001789 SOUTH DAKOTA      2023-01-012023-06-30 C001789 Basin Electric Power Cooperative WAPA WAPA LFP MONTANA OATT CROSSOVER GREATFALLS 2023-01-012023-06-30 C001789 Portland General Electric Company BPAT NWMT NF MONTANA OATT BPAT.NWMT NWMT.SYSTEM 2023-01-012023-06-30 C001789 Transalta Energy Marketing (US) Inc. WAPA PPW NF MONTANA OATT CROSSOVER BRDY 2023-01-012023-06-30 C001789 Portland General Electric Company NWMT NWMT NF MONTANA OATT COLSTRIP MATL.NWMT 2023-01-012023-06-30 C001789 Tax Cut Jobs Act Deferral (South Dakota) - Docket NG-0095 and GE17-003 2023-06-30 C001789 ferc:Quarter4Member Montana Operations 2023-01-012023-06-30 C001789 Western Area Power Administration PPW WAPA SFP MONTANA OATT YTP GREATFALLS 2023-01-012023-06-30 C001789 Montana Public Service Commission (Montana) - Docket 2017.9.78 - Order 7568 2023-06-30 C001789 Powerex Corporation WAPA BPAT NF MONTANA OATT CROSSOVER BPAT.NWMT 2023-01-012023-06-30 C001789 CP Energy Marketing (US) Inc. NWMT PACE NF MONTANA OATT MATL.NWMT JEFF 2023-01-012023-06-30 C001789 Dynasty Power Inc. PPW BPAT NF MONTANA OATT YTP BPAT.NWMT 2023-01-012023-06-30 C001789 EDF Trading North America, LLC AVA AVA SFP MONTANA OATT COLSTRIP AVAT.NWMT 2023-01-012023-06-30 C001789 Energy Keepers Inc. BPAT AVA SFP MONTANA OATT BPAT.NWMT AVAT.NWMT 2023-01-012023-06-30 C001789 FAS 112 (Montana) - Docket 93.6.24 and Docket 2009.9.129 2023-01-012023-06-30 C001789 BPA Residential Exchange Program (Montana) - Docket 2018.8.49 Order 7630; Annual Amortization 2023-06-30 C001789 Natural Gas Regulatory Deferrals (Montana) 2023-03-31 C001789 Morgan Stanley Capital Group, Inc. PPW BPAT NF MONTANA OATT YTP BPAT.NWMT 2023-01-012023-06-30 C001789 Portland General Electric Company NWMT AVA NF MONTANA OATT COLSTRIP AVAT.NWMT 2023-01-012023-06-30 C001789 Shell Energy North America BPAT WAPA SFP MONTANA OATT BPAT.NWMT CROSSOVER 2023-01-012023-06-30 C001789 General Mills Operations, LLC  Energy Keepers Inc.  General Mills Operations, LLC  FNO  Montana OATT  Kerr  Great Falls, MT 2023-01-012023-06-30 C001789 Manufactured Gas Plants (South Dakota) - Docket NG 11-003 2023-04-012023-06-30 C001789 SociVolta, Inc. PACE NWMT NF MONTANA OATT BRDY MATL.NWMT 2023-01-012023-06-30 C001789 Aspen Air U.S., LLC  Talen Energy  Aspen Air Corporation  FNO  Montana OATT  Colstrip    Billings, MT 2023-01-012023-06-30 C001789 Montana Consumer Counsel Tax (Montana) - Docket 2018.10.67 - Order 7637 2023-01-012023-06-30 C001789 Guzman Energy, LLC AVA BPAT NF MONTANA OATT AVAT.NWMT BPAT.NWMT 2023-01-012023-06-30 C001789 SOUTH DAKOTA 2023-01-012023-06-30 C001789 GCC Three Forks, LLC  Energy Keepers Inc.  GCC Three Forks, LLC  FNO  Montana OATT  Kerr  Three Forks, MT 2023-01-012023-06-30 C001789 ferc:OtherUtilityMember 2023-06-30 C001789 Seattle City Light NF 2023-01-012023-06-30 C001789 FEA Studies 2023-01-012023-06-30 C001789 2023-01-012023-06-30 C001789 ferc:JuneMember Montana Operations 2023-01-012023-06-30 C001789 Guzman Energy, LLC WAPA BPAT NF MONTANA OATT GREATFALLS BPAT.NWMT 2023-01-012023-06-30 C001789 Cycle Power Partners, LLC NWMT PACE NF MONTANA OATT HORSESHOE JEFF 2023-01-012023-06-30 C001789 Mercuria Energy America, LLC PPW WAPA NF MONTANA OATT BRDY GREATFALLS 2023-01-012023-06-30 C001789 Rainbow Electric Marketing Corp. WAUW NWMT NF MONTANA OATT CROSSOVER MATL.NWMT 2023-01-012023-06-30 C001789 EDF Trading North America, LLC NWMT NWMT NF MONTANA OATT NWMTIMBALANC NWMT.SYSTEM 2023-01-012023-06-30 C001789 EDF Trading North America, LLC NWMT BPAT NF MONTANA OATT COLSTRIP BPAT.NWMT 2023-01-012023-06-30 C001789 Western Area Power Administration PPW WAPA NF MONTANA OATT YTP GREATFALLS 2023-01-012023-06-30 C001789 Sun River Elect Coop OLF 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. BPAT GWA SFP MONTANA OATT BPAT.NWMT GLWND1 2023-01-012023-06-30 C001789 Rainbow Electric Marketing Corp. WAPA PPW NF MONTANA OATT CROSSOVER YTP 2023-01-012023-06-30 C001789 Montana Consumer Counsel Tax (Montana) - Docket 2018.10.67 - Order 7637 2023-04-012023-06-30 C001789 Transalta Energy Marketing (US) Inc. WAPA BPAT NF MONTANA OATT CROSSOVER BPAT.NWMT 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. NWMT BPAT SFP MONTANA OATT COLSTRIP BPAT.NWMT 2023-01-012023-06-30 C001789 Rainbow Electric Marketing Corp. NWMT BPAT NF MONTANA OATT CANYONFERRY BPAT.NWMT 2023-01-012023-06-30 C001789 Other 2023-01-012023-06-30 C001789 Bonneville Power Administration BPAT PPW NF MONTANA OATT BPAT.NWMT BRDY 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. GWA PPW NF MONTANA OATT GLWND1 BRDY 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. NWMT NWMT SFP MONTANA OATT CROOKEDFALLS MATL.NWMT 2023-01-012023-06-30 C001789 ferc:MayMember South Dakota Operations 2023-01-012023-06-30 C001789 Western Area Power Administration  WAPA  Malmstrom Air Force Base  FNO  Montana OATT  Fort Peck West  Great Falls, MT 2023-01-012023-06-30 C001789 Mercuria Energy America, LLC WAPA PPW NF MONTANA OATT GREATFALLS BRDY 2023-01-012023-06-30 C001789 Mercuria Energy America, LLC WAPA GWA NF MONTANA OATT GREATFALLS GLWND1 2023-01-012023-06-30 C001789 BPA Residential Exchange Program (Montana) - Docket 2018.8.49 Order 7630; Annual Amortization 2023-01-012023-06-30 C001789 Basin Electric Power Cooperative NWMT BPAT NF MONTANA OATT MATL.NWMT BPAT.NWMT 2023-01-012023-06-30 C001789 Energy Keepers Inc. NWMT PACE LFP MONTANA OATT KERR BRDY 2023-01-012023-06-30 C001789 ferc:MarchMember Montana Operations 2023-01-012023-06-30 C001789 Iberdrola Renewables Inc. BPAT PPW NF MONTANA OATT BPAT.NWMT BRDY 2023-01-012023-06-30 C001789 FAS 106 (Montana) - Docket 93.6.24 and Docket 2009.9.129 2023-03-31 C001789 ScheduleTransmissionOfElectricityByIsoOrRtoAbstract 2023-01-012023-06-30 C001789 CTC QF Over/Under Collections (Montana) - Docket 97.9.90 and Docket 2001.1.15; Annual Amortization 2023-04-012023-06-30 C001789 Montana Consumer Counsel Tax (Montana) - Docket 2018.10.67 - Order 7637 2023-03-31 C001789 EDF Trading North America, LLC NWMT PPW NF MONTANA OATT COLSTRIP BRDY 2023-01-012023-06-30 C001789 Transalta Energy Marketing (US) Inc. PPW WAPA NF MONTANA OATT YTP CROSSOVER 2023-01-012023-06-30 C001789 Basin Electric Power Cooperative WAPA PPW NF MONTANA OATT CROSSOVER YTP 2023-01-012023-06-30 C001789 Field Inventory (South Dakota) - Docket EL 14-106 2023-04-012023-06-30 C001789 Bonneville Power Administration  BPA    Bonneville Power Administration  FNO  Montana OATT  BPAT.NWMT      Various in Montana 2023-01-012023-06-30 C001789 Portland General Electric Company PPW BPAT NF MONTANA OATT BRDY BPAT.NWMT 2023-01-012023-06-30 C001789 ferc:Quarter3Member Montana Operations 2023-01-012023-06-30 C001789 Transalta Energy Marketing (US) Inc. NWMT PACE NF MONTANA OATT MATL.NWMT BRDY 2023-01-012023-06-30 C001789 ferc:ElectricUtilityMemberferc:HydraulicProductionPlantConventionalMember 2023-01-012023-06-30 C001789 Other 2022-01-012022-06-30 C001789 Excess Deferred Income Taxes (South Dakota) 2023-04-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. GWA PPW NF MONTANA OATT GLWND2 JEFF 2023-01-012023-06-30 C001789 REC Silicon Company  Morgan Stanley  REC Silicon Company  FNO  Montana OATT  Hardin    Butte, MT 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. BPAT PPW SFP MONTANA OATT BPAT.NWMT JEFF 2023-01-012023-06-30 C001789 EDF Trading North America, LLC PACE NWMT NF MONTANA OATT BRDY COLSTRIP 2023-01-012023-06-30 C001789 Macquarie Energy, LLC NWMT BPAT NF MONTANA OATT HOLTER BPAT.NWMT 2023-01-012023-06-30 C001789 2022-04-012022-06-30 C001789 Morgan Stanley Capital Group, Inc. BPAT AVA NF MONTANA OATT BPAT.NWMT AVAT.NWMT 2023-01-012023-06-30 C001789 CTC QF Over/Under Collections (Montana) - Docket 97.9.90 and Docket 2001.1.15; Annual Amortization 2023-03-31 C001789 ferc:Quarter1Member South Dakota Operations 2023-01-012023-06-30 C001789 Excess Deferred Income Taxes (Montana) 2023-03-31 C001789 MAG Energy Solutions PACE NWMT NF MONTANA OATT JEFF MATL.NWMT 2023-01-012023-06-30 C001789 FAS 106 (Montana) - Docket 93.6.24 and Docket 2009.9.129 2023-04-012023-06-30 C001789 Asset Retirement Obligation (South Dakota) 2023-03-31 C001789 GROTON, CITY OF WAPA GROTON LFP VOL 2 HURON 115 KV BUS GROTON 69 KV 2023-01-012023-06-30 C001789 Big Horn County Electric Coop. Inc.  WAPA  Big Horn County Electric Coop. Inc.  FNO  Montana OATT  Various & Great Falls    Various in Montana 2023-01-012023-06-30 C001789 Excess Deferred Income Taxes (South Dakota) 2023-04-012023-06-30 C001789 Flow-through Income Taxes (Montana) 2023-03-31 C001789 Energy Keepers Inc. NWMT PACE SFP MONTANA OATT KERR YTP 2023-01-012023-06-30 C001789 Energy Keepers Inc. NWMT BPAT SFP MONTANA OATT KERR BPAT.NWMT 2023-01-012023-06-30 C001789 Transalta Energy Marketing (US) Inc. WAPA AVA NF MONTANA OATT CROSSOVER AVAT.NWMT 2023-01-012023-06-30 C001789 Phillips 66 Company  Shell Energy  Phillips 66 Company  FNO  Montana OATT  BPAT.NWMT  Various in Montana 2023-01-012023-06-30 C001789 Basin Creek Capital Lease (Montana) 2023-03-31 C001789 LANGFORD, CITY OF WAPA LANGFORD LFP VOL 2 HURON 115 KV BUS LANGFORD 12.5 KV 2023-01-012023-06-30 C001789 ferc:OtherUtility2Member 2023-06-30 C001789 The Energy Authority BPAT PPW SFP MONTANA OATT BPAT.NWMT BRDY 2023-01-012023-06-30 C001789 Montana Public Service Commission (Montana) - Docket 2017.9.78 - Order 7568 2023-03-31 C001789 Sibanye-Stillwater  Various  Stillwater Mining Company  FNO  Montana OATT  As Available  Various in Montana 2023-01-012023-06-30 C001789 ferc:SteamProductionPlantMemberferc:ElectricUtilityMember 2023-01-012023-06-30 C001789 Transalta Energy Marketing (US) Inc. PPW BPAT NF MONTANA OATT YTP BPAT.NWMT 2023-01-012023-06-30 C001789 Pension Plan (South Dakota) 2023-01-012023-06-30 C001789 Basin Electric Power Cooperative PPW NWMT NF MONTANA OATT YTP NWMT.SYSTEM 2023-01-012023-06-30 C001789 Benefis Health Systems  Energy Keepers inc.  Benefis Health Systems  FNO  Montana OATT  Kerr  Various in Montana 2023-01-012023-06-30 C001789 Magris Talc USA, Inc.  Energy Keepers Inc.  Magris Talc USA, Inc.  FNO  Montana OATT  Kerr  Three Forks, MT 2023-01-012023-06-30 C001789 Natural Gas Transmission Verification Program (Montana) - Docket D2016.11.88 2023-03-31 C001789 Morgan Stanley Capital Group, Inc. NWMT NWMT SFP MONTANA OATT HARDIN MATL.NWMT 2023-01-012023-06-30 C001789 Debt Financing Costs 2023-01-012023-06-30 C001789 Basin Creek Capital Lease (Montana) 2023-04-012023-06-30 C001789 Powerex Corporation BPAT WAPA NF MONTANA OATT BPAT.NWMT CROSSOVER 2023-01-012023-06-30 C001789 Line of Credit (Repayments) Borrowings, Net 2022-01-012022-06-30 C001789 ferc:GasUtilityMember 2023-06-30 C001789 Morgan Stanley Capital Group, Inc. GWA PPW NF MONTANA OATT GLWND2 BRDY 2023-01-012023-06-30 C001789 ferc:CommonPlantElectricMemberferc:ElectricUtilityMember 2023-01-012023-06-30 C001789 The Energy Authority PPW BPAT NF MONTANA OATT YTP BPAT.NWMT 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. WAPA PPW NF MONTANA OATT GREATFALLS JEFF 2023-01-012023-06-30 C001789 Montana Operationsferc:JanuaryMember 2023-01-012023-06-30 C001789 EDF Trading North America, LLC NWMT NWMT NF MONTANA OATT COLSTRIP NWMT.SYSTEM 2023-01-012023-06-30 C001789 Naturener Power Watch, LLC GWA GWA SFP MONTANA OATT GLWND1 GLWND2 2023-01-012023-06-30 C001789 Puget Sound Energy Marketing AVA AVA SFP MONTANA OATT COLSTRIP AVAT.NWMT 2023-01-012023-06-30 C001789 Deferred Gas Storage Sales (Montana) - Docket D2001.1.1; Amortization 2001 - 2039 2023-06-30 C001789 Rainbow Electric Marketing Corp. PPW BPAT NF MONTANA OATT YTP BPAT.NWMT 2023-01-012023-06-30 C001789 Investment in Equity Securities 2023-01-012023-06-30 C001789 Asset Retirement Obligation (Montana) 2023-04-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. BPAT GWA NF MONTANA OATT BPAT.NWMT GLWND2 2023-01-012023-06-30 C001789 Montana Public Service Commission (Montana) - Docket 2017.9.78 - Order 7568 2023-01-012023-06-30 C001789 Powerex Corporation NWMT PACE NF MONTANA OATT MATL.NWMT BRDY 2023-01-012023-06-30 C001789 Mercuria Energy America, LLC WAPA PPW NF MONTANA OATT CROSSOVER BRDY 2023-01-012023-06-30 C001789 EDF Trading North America, LLC BPAT AVA NF MONTANA OATT BPAT.NWMT AVAT.NWMT 2023-01-012023-06-30 C001789 Western Area Power Administration WAPA WAPA SFP MONTANA OATT GREATFALLS CROSSOVER 2023-01-012023-06-30 C001789 Western Area Power Administration NWMT WAPA SFP MONTANA OATT CANYONFERRY CROSSOVER 2023-01-012023-06-30 C001789 Natural Gas Regulatory Deferrals (Montana) 2023-01-012023-06-30 C001789 Rounding      2023-01-012023-06-30 C001789 Basin Electric Power Cooperative PPW WAPA NF MONTANA OATT YTP GREATFALLS 2023-01-012023-06-30 C001789 Unbilled Revenues (South Dakota) 2023-01-012023-06-30 C001789 Guzman Energy, LLC NWMT NWMT NF MONTANA OATT CLEARWATER TOWNSEND 2023-01-012023-06-30 C001789 Manufactured Gas Plants (South Dakota) - Docket NG 11-003 2023-03-31 C001789 EDF Trading North America, LLC NWMT BPAT SFP MONTANA OATT COLSTRIP BPAT.NWMT 2023-01-012023-06-30 C001789 Montana Consumer Counsel Tax (Montana) - Docket 2018.10.67 - Order 7637 2023-06-30 C001789 Transalta Energy Marketing (US) Inc. WAPA PPW NF MONTANA OATT CROSSOVER YTP 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. PACE NWMT NF MONTANA OATT JEFF MATL.NWMT 2023-01-012023-06-30 C001789 Field Inventory (South Dakota) - Docket EL 14-106 2023-03-31 C001789 ferc:NovemberMember South Dakota Operations 2023-01-012023-06-30 C001789 Montana Operationsferc:Quarter2Member 2023-01-012023-06-30 C001789 Puget Sound Energy Marketing AVA AVA NF MONTANA OATT COLSTRIP AVAT.NWMT 2023-01-012023-06-30 C001789 Morgan Stanley Capital Group, Inc. NWMT NWMT NF MONTANA OATT COLSTRIP MATL.NWMT 2023-01-012023-06-30 C001789 CTC QF Over/Under Collections (Montana) - Docket 97.9.90 and Docket 2001.1.15; Annual Amortization 2023-01-012023-06-30 C001789 MAG Energy Solutions BPAT NWMT NF MONTANA OATT BPAT.NWMT MATL.NWMT 2023-01-012023-06-30 C001789 Basin Electric Power Cooperative PPW WAPA NF MONTANA OATT YTP CROSSOVER 2023-01-012023-06-30 iso4217:USD utr:MWh xbrli:pure utr:MW ns:year
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
/
Q2


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
/
Q2
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)

06/30/2023
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)

08/03/2023
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:

06/30/2023
Year/Period of Report

End of:
2023
/
Q2
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:

06/30/2023
Year/Period of Report

End of:
2023
/
Q2
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. None
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. None
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 LeFave was promoted to Vice President of Asset Management and Business Development.
14. NA


Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

06/30/2023
Year/Period of Report

End of:
2023
/
Q2
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
7,698,089,684
7,591,279,874
3
ConstructionWorkInProgress
Construction Work in Progress (107)
200
403,135,984
300,649,215
4
UtilityPlantAndConstructionWorkInProgress
TOTAL Utility Plant (Enter Total of lines 2 and 3)
8,101,225,668
7,891,929,089
5
AccumulatedProvisionForDepreciationAmortizationAndDepletionOfPlantUtility
(Less) Accum. Prov. for Depr. Amort. Depl. (108, 110, 111, 115)
200
2,867,174,608
2,786,711,964
6
UtilityPlantNet
Net Utility Plant (Enter Total of line 4 less 5)
5,234,051,060
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)
5,234,051,060
5,105,217,125
15
OtherElectricPlantAdjustments
Utility Plant Adjustments (116)
357,585,527
357,585,527
16
GasStoredUndergroundNoncurrent
Gas Stored Underground - Noncurrent (117)
36,209,271
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
30,763,905
25,343,937
23
NoncurrentPortionOfAllowances
Noncurrent Portion of Allowances
228
24
OtherInvestments
Other Investments (124)
21,752,022
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)
53,135,097
47,000,927
33
CurrentAndAccruedAssetsAbstract
CURRENT AND ACCRUED ASSETS
34
CashAndWorkingFunds
Cash and Working Funds (Non-major Only) (130)
35
Cash
Cash (131)
6,104,366
8,029,111
36
SpecialDeposits
Special Deposits (132-134)
15,098,817
12,761,965
37
WorkingFunds
Working Fund (135)
22,850
23,450
38
TemporaryCashInvestments
Temporary Cash Investments (136)
39
NotesReceivable
Notes Receivable (141)
40
CustomerAccountsReceivable
Customer Accounts Receivable (142)
77,664,444
106,890,491
41
OtherAccountsReceivable
Other Accounts Receivable (143)
9,333,986
26,793,907
42
AccumulatedProvisionForUncollectibleAccountsCredit
(Less) Accum. Prov. for Uncollectible Acct.-Credit (144)
2,942,206
2,451,237
43
NotesReceivableFromAssociatedCompanies
Notes Receivable from Associated Companies (145)
44
AccountsReceivableFromAssociatedCompanies
Accounts Receivable from Assoc. Companies (146)
1,344,258
3,143,188
45
FuelStock
Fuel Stock (151)
227
8,563,633
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
81,760,976
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
677,194
55
GasStoredCurrent
Gas Stored Underground - Current (164.1)
16,496,118
27,722,831
56
LiquefiedNaturalGasStoredAndHeldForProcessing
Liquefied Natural Gas Stored and Held for Processing (164.2-164.3)
57
Prepayments
Prepayments (165)
(a)
22,973,142
23,739,745
58
AdvancesForGas
Advances for Gas (166-167)
59
InterestAndDividendsReceivable
Interest and Dividends Receivable (171)
60
RentsReceivable
Rents Receivable (172)
132,998
213,473
61
AccruedUtilityRevenues
Accrued Utility Revenues (173)
64,499,284
117,418,484
62
MiscellaneousCurrentAndAccruedAssets
Miscellaneous Current and Accrued Assets (174)
945,763
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)
301,321,235
405,537,347
68
DeferredDebitsAbstract
DEFERRED DEBITS
69
UnamortizedDebtExpense
Unamortized Debt Expenses (181)
11,540,027
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
728,458,236
729,084,376
73
PreliminarySurveyAndInvestigationCharges
Prelim. Survey and Investigation Charges (Electric) (183)
215,264
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)
725,298
37,192
77
TemporaryFacilities
Temporary Facilities (185)
78
MiscellaneousDeferredDebits
Miscellaneous Deferred Debits (186)
233
9,208,248
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)
21,208,741
22,619,741
82
AccumulatedDeferredIncomeTaxes
Accumulated Deferred Income Taxes (190)
234
146,420,367
163,943,624
83
UnrecoveredPurchasedGasCosts
Unrecovered Purchased Gas Costs (191)
27,796,901
100,874,939
84
DeferredDebits
Total Deferred Debits (lines 69 through 83)
945,573,082
1,035,357,966
85
AssetsAndOtherDebits
TOTAL ASSETS (lines 14-16, 32, 67, and 84)
6,927,875,272
6,986,908,503


Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

06/30/2023
Year/Period of Report

End of:
2023
/
Q2
FOOTNOTE DATA

(a) Concept: Prepayments
South Dakota Operations Prepayments (165) are $13,491,138 and $11,517,440 for 2023 and 2022, respectively.

Montana Operations Prepayments (165) are $9,482,004 and $12,222,305 for 2023 and 2022, respectively.
(b) Concept: UnamortizedLossOnReacquiredDebt
Montana Operations Unamortized Loss on Reacquired Debt (189) is $19,373,062 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:

06/30/2023
Year/Period of Report

End of:
2023
/
Q2
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
635,179
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
2,015,366,976
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
775,314,090
769,493,168
12
UnappropriatedUndistributedSubsidiaryEarnings
Unappropriated Undistributed Subsidiary Earnings (216.1)
118
473,976
222,330
13
ReacquiredCapitalStock
(Less) Reacquired Capital Stock (217)
250
98,301,569
98,392,040
14
NoncorporateProprietorship
Noncorporate Proprietorship (Non-major only) (218)
15
AccumulatedOtherComprehensiveIncome
Accumulated Other Comprehensive Income (219)
122(a)(b)
5,816,568
5,705,664
16
ProprietaryCapital
Total Proprietary Capital (lines 2 through 15)
2,686,724,132
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
191,000,000
450,000,000
22
UnamortizedPremiumOnLongTermDebt
Unamortized Premium on Long-Term Debt (225)
23
UnamortizedDiscountOnLongTermDebtDebit
(Less) Unamortized Discount on Long-Term Debt-Debit (226)
19,615
33,056
24
LongTermDebt
Total Long-Term Debt (lines 18 through 23)
2,670,640,385
2,629,626,944
25
OtherNoncurrentLiabilitiesAbstract
OTHER NONCURRENT LIABILITIES
26
ObligationsUnderCapitalLeaseNoncurrent
Obligations Under Capital Leases - Noncurrent (227)
7,773,660
9,389,857
27
AccumulatedProvisionForPropertyInsurance
Accumulated Provision for Property Insurance (228.1)
28
AccumulatedProvisionForInjuriesAndDamages
Accumulated Provision for Injuries and Damages (228.2)
(a)
4,830,891
4,365,711
29
AccumulatedProvisionForPensionsAndBenefits
Accumulated Provision for Pensions and Benefits (228.3)
(b)
10,324,260
10,546,632
30
AccumulatedMiscellaneousOperatingProvisions
Accumulated Miscellaneous Operating Provisions (228.4)
62,269,098
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)
41,449,491
40,893,877
35
OtherNoncurrentLiabilities
Total Other Noncurrent Liabilities (lines 26 through 34)
126,647,400
137,785,038
36
CurrentAndAccruedLiabilitiesAbstract
CURRENT AND ACCRUED LIABILITIES
37
NotesPayable
Notes Payable (231)
92,402
38
AccountsPayable
Accounts Payable (232)
99,607,870
214,538,891
39
NotesPayableToAssociatedCompanies
Notes Payable to Associated Companies (233)
40
AccountsPayableToAssociatedCompanies
Accounts Payable to Associated Companies (234)
4,495,878
4,356,816
41
CustomerDeposits
Customer Deposits (235)
9,370,282
10,853,645
42
TaxesAccrued
Taxes Accrued (236)
262
104,742,896
92,522,773
43
InterestAccrued
Interest Accrued (237)
21,334,492
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)
1,315,369
2,441,695
48
MiscellaneousCurrentAndAccruedLiabilities
Miscellaneous Current and Accrued Liabilities (242)
(c)
66,094,779
72,402,424
49
ObligationsUnderCapitalLeasesCurrent
Obligations Under Capital Leases-Current (243)
3,747,063
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)
310,708,629
419,360,770
55
DeferredCreditsAbstract
DEFERRED CREDITS
56
CustomerAdvancesForConstruction
Customer Advances for Construction (252)
(d)
103,282,652
95,393,208
57
AccumulatedDeferredInvestmentTaxCredits
Accumulated Deferred Investment Tax Credits (255)
266
337,589
388,447
58
DeferredGainsFromDispositionOfUtilityPlant
Deferred Gains from Disposition of Utility Plant (256)
59
OtherDeferredCredits
Other Deferred Credits (253)
269
156,987,360
158,152,503
60
OtherRegulatoryLiabilities
Other Regulatory Liabilities (254)
278
173,368,334
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)
466,080,429
455,220,141
64
AccumulatedDeferredIncomeTaxesOther
Accum. Deferred Income Taxes-Other (283)
233,098,362
254,398,643
65
DeferredCredits
Total Deferred Credits (lines 56 through 64)
1,133,154,726
1,134,953,844
66
LiabilitiesAndOtherCredits
TOTAL LIABILITIES AND STOCKHOLDER EQUITY (lines 16, 24, 35, 54 and 65)
6,927,875,272
6,986,908,503


Name of Respondent:

NorthWestern Corporation
This report is:

(1)
An Original

(2)
A Resubmission
Date of Report:

06/30/2023
Year/Period of Report

End of:
2023
/
Q2
FOOTNOTE DATA

(a) Concept: AccumulatedProvisionForInjuriesAndDamages
South Dakota Operations Provision for Injuries and Damages (228.2) are $464,402 and $480,925 for 2023 and 2022, respectively.

Montana Operations Provision for Injuries and Damages (228.2) are $4,366,488 and $3,884,786 for 2023 and 2022, respectively.
(b) Concept: AccumulatedProvisionForPensionsAndBenefits
Montana Operations Accumulated Provision for Pensions and Benefits (228.3) are $6,706,079 and $7,048,754 for 2023 and 2022, respectively.
(c) Concept: MiscellaneousCurrentAndAccruedLiabilities
Montana Operations Miscellaneous Current and Accrued Liabilities (242) are $54,185,502 and $60,534,114 for 2023 and 2022, respectively.
(d) Concept: CustomerAdvancesForConstruction
Montana Operations Customer Advances for Construction (252) are $103,282,651 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:

06/30/2023
Year/Period of Report

End of:
2023
/
Q2
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
891,613,624
754,686,328
344,093,402
329,175,653
643,124,407
525,228,885
247,653,944
228,865,436
835,273
592,007
3
OperatingExpensesAbstract
Operating Expenses
4
OperationExpense
Operation Expenses (401)
320
502,929,658
397,406,465
182,924,276
168,187,875
331,951,648
244,233,979
170,291,746
152,723,243
686,264
449,243
5
MaintenanceExpense
Maintenance Expenses (402)
320
29,127,540
27,580,088
15,139,322
14,443,000
24,626,462
23,438,454
4,480,581
4,117,320
20,498
24,314
6
DepreciationExpense
Depreciation Expense (403)
336
90,347,183
83,183,327
44,737,744
41,184,580
74,857,613
69,325,398
15,469,119
13,837,577
20,451
20,352
7
DepreciationExpenseForAssetRetirementCosts
Depreciation Expense for Asset Retirement Costs (403.1)
336
8
AmortizationAndDepletionOfUtilityPlant
Amort. & Depl. of Utility Plant (404-405)
336
7,909,363
6,465,576
3,956,407
3,294,652
4,788,102
3,615,718
3,121,261
2,849,858
9
AmortizationOfElectricPlantAcquisitionAdjustments
Amort. of Utility Plant Acq. Adj. (406)
336
7,550,886
7,550,886
3,775,443
3,775,443
7,974,138
7,974,138
423,253
423,253
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)
52,816,415
7,559,705
22,513,988
544,489
29,931,275
1,854,374
22,885,140
5,705,331
13
RegulatoryCredits
(Less) Regulatory Credits (407.4)
35,576,982
7,423,749
16,910,329
5,293,058
21,390,785
6,100,577
14,186,196
1,323,172
14
TaxesOtherThanIncomeTaxesUtilityOperatingIncome
Taxes Other Than Income Taxes (408.1)
262
93,402,866
97,641,532
42,245,248
48,895,713
72,309,714
75,761,760
21,064,661
21,846,277
28,491
33,495
15
IncomeTaxesOperatingIncome
Income Taxes - Federal (409.1)
262
7,036,411
7,816,852
251,119
4,900,520
1,245,332
330,209
5,770,991
7,470,798
20,088
15,845
16
IncomeTaxesUtilityOperatingIncomeOther
Income Taxes - Other (409.1)
262
9,464,946
3,581,077
102,912
1,703,030
7,470,129
1,508,020
1,987,893
2,067,595
6,924
5,462
17
ProvisionsForDeferredIncomeTaxesUtilityOperatingIncome
Provision for Deferred Income Taxes (410.1)
234, 272
48,284,615
33,728,368
21,429,992
21,538,825
40,268,894
26,294,496
8,021,343
7,438,039
5,622
4,167
18
ProvisionForDeferredIncomeTaxesCreditOperatingIncome
(Less) Provision for Deferred Income Taxes-Cr. (411.1)
234, 272
57,851,456
44,985,501
20,892,123
13,263,560
41,883,325
30,971,980
15,968,132
14,013,521
19
InvestmentTaxCreditAdjustments
Investment Tax Credit Adj. - Net (411.4)
266
50,858
63,854
10,741
20,279
50,858
63,854
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)
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)
755,390,587
620,040,772
298,761,020
276,684,130
532,098,339
417,200,135
222,515,154
202,296,092
777,094
544,544
27
NetUtilityOperatingIncome
Net Util Oper Inc (Enter Tot line 2 less 25)
136,223,037
134,645,556
45,332,382
52,491,523
111,026,068
108,028,750
25,138,790
26,569,344
58,179
47,463
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)
290,844
276,740
137,533
173,533
32
CostsAndExpensesOfMerchandisingJobbingAndContractWork
(Less) Costs and Exp. of Merchandising, Job. & Contract Work (416)
115,735
79,776
80,999
41,003
33
RevenuesFromNonutilityOperations
Revenues From Nonutility Operations (417)
145,700
154,456
125,340
63,042
34
ExpensesOfNonutilityOperations
(Less) Expenses of Nonutility Operations (417.1)
299,213
292,674
169,156
91,717
35
NonoperatingRentalIncome
Nonoperating Rental Income (418)
36
EquityInEarningsOfSubsidiaryCompanies
Equity in Earnings of Subsidiary Companies (418.1)
119
251,646
294,627
141,323
132,183
37
InterestAndDividendIncome
Interest and Dividend Income (419)
229,905
1,105,540
48,893
362,877
38
AllowanceForOtherFundsUsedDuringConstruction
Allowance for Other Funds Used During Construction (419.1)
7,810,964
6,652,909
4,096,491
3,536,420
39
MiscellaneousNonoperatingIncome
Miscellaneous Nonoperating Income (421)
53,187
64,345
2,979
126,545
40
GainOnDispositionOfProperty
Gain on Disposition of Property (421.1)
41
OtherIncome
TOTAL Other Income (Enter Total of lines 31 thru 40)
7,757,632
7,586,913
4,013,800
3,744,424
42
OtherIncomeDeductionsAbstract
Other Income Deductions
43
LossOnDispositionOfProperty
Loss on Disposition of Property (421.2)
44
MiscellaneousAmortization
Miscellaneous Amortization (425)
45
Donations
Donations (426.1)
492,693
482,195
201,723
148,053
46
LifeInsurance
Life Insurance (426.2)
47
Penalties
Penalties (426.3)
116
2,519,800
2,519,800
48
ExpendituresForCertainCivicPoliticalAndRelatedActivities
Exp. for Certain Civic, Political & Related Activities (426.4)
263,290
191,567
68,781
79,247
49
OtherDeductions
Other Deductions (426.5)
67,038
127,193
32,915
93,245
50
OtherIncomeDeductions
TOTAL Other Income Deductions (Total of lines 43 thru 49)
689,061
3,320,755
237,589
2,653,855
51
TaxesApplicableToOtherIncomeAndDeductionsAbstract
Taxes Applic. to Other Income and Deductions
52
TaxesOtherThanIncomeTaxesOtherIncomeAndDeductions
Taxes Other Than Income Taxes (408.2)
262
1,092
1,398
360
699
53
IncomeTaxesFederal
Income Taxes-Federal (409.2)
262