2021 Informational Electric and Natural Gas Filings
2021 Info EL2 - NorthWestern Corporation dba NorthWestern Energy's Notice of Annual Update
Annual Update (Excel Format)
Date Filed: 03/01/21
2021 Info EL3 - Otter Tail Power Company's Notice to Temporarily Estimate Meter Readings - COVID-19 Update
Date Filed: 03/09/21
2021 Info EL4 - Otter Tail Power Company's FERC Filing regarding Application to Terminate Mandatory PURPA Purchase Obligation of Otter Tail Power Company
Date Filed: 04/22/21
2021 Info EL7 - Commission Staff's Letter regarding June 10, 2021 Commission Meeting, Items for Commission Discussion and Sample Periodic Progress Report for
Wind Energy Facilities
Date Filed: 06/04/21
2021 Info EL8 - Black Hills Energy’s Letter to the Wyoming Public Service Commission regarding the Joint Filing of the Integrated Resource Plan for Cheyenne Light, Fuel and Power Company dba Black Hills Energy and Black Hills Power, Inc. dba Black Hills Energy
Cheyenne Light, Fuel and Power Company and Black Hills Power, Inc.’s 2021 Integrated Resource Plan
Appendix A - Acronyms
Appendix B - WECC Contingency Reserve Specifications
Appendix C - Load Forecast Data
Appendix C - Load Forecast Data Confidential (not available to the public)
Appendix D - Busbar Cost Study
Appendix E - Neil Simpson Unit II Power Plant Studies
Appendix F - Variable Energy Resource Integration Report
Appendix G - Balancing Authority Feasibility Study
Appendix H - Confidential Price and Cost Forecasts (not available to the public)
Appendix I - Energy Market Participation Analysis
Appendix J - Load and Resource Balance 2021-2040
Appendix K - Analytical Methods and Modules
Appendix L - Overview of Forecasting Models
Appendix M - Data Center Impact Study
Appendix N - 2021 IRP Modeling Summary
Appendix O - Demand-Side Management Survey
Petition for Confidential Treatment of Appendices C and H
Date Filed: 07/01/21
2021 Info EL9 - Montana-Dakota Utilities Co.’s Letter regarding its 2021 Integrated Resource Plan filed with the North Dakota Public Service Commission
Date Filed: 07/01/21
2021 Info EL10 - Otter Tail Power Company's Notice to Temporarily Estimate Meter Readings - COVID-19 Update - June 2021
Date Filed: 06/21/21
2021 Info EL11 - Northern States Power Company dba Xcel Energy's 2020 Minnesota Annual Update of Remaining Lives and Depreciation Rates for Transmission, Distribution, and General Accounts
Date Filed: 08/05/21
- Request for Confidential Treatment
- Resource Plan
- Resource Plan Confidential (not available to the public)
- Appendices A-J
- Appendices A-J Confidential (not available to the public)
2021 Info EL13 - Otter Tail Power Company's Notice to Temporarily Estimate Meter Readings - COVID-19 Update
Date Filed: 09/27/21
2021 Info EL14 - Agreement to Transfer Service Territory between Clay Union Electric Corporation and City of Vermillion
Annexation Map
Date Filed: 09/13/21
2021 Info EL15 - Transfer of Service Territory Between the City of Brookings and Sioux Valley-Southwestern Electric Cooperative, Inc. - (City of Brookings Resolution 20-048, Exhibits A & B, Resolution No. 5-21)
Date Filed: 10/18/21
2021 Info EL16 - Transfer of Service Territory Between the City Of Brookings and Sioux Valley-Southwestern Electric Cooperative, Inc. - (City of Brookings Resolution 20-049, Exhibits A & B, Resolution No. 6-21)
Date Filed: 10/18/21
2021 Info EL17 - NorthWestern Corporation dba NorthWestern Energy's (South Dakota), Docket No. ER22-412-000 Informational Filing for Formula Rate Annual Update
Date Filed: 11/16/21