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EL25-039 - In the Matter of the Filing by Montana-Dakota Utilities Co., a Subsidiary of MDU Resources Group Inc., Update to Infrastructure Rider (IR) Rate 56 and Request for Waiver of Fuel and Purchase Power Adjustment Rate 58
Date Filed: 10/31/25 ♦ Intervention Date: 11/21/25
Date of Notice of Filing: 11/06/25 ♦ Pending
Agendas:
November 18, 2025, Agenda of Commission Meeting
Minutes:
Minutes of the November 18, 2025, Commission Meeting
- 10/31/25 - Montana-Dakota Utilities Co.'s Letter regarding Annual Update to Infrastructure Rider (IR) Rate 56 Request for Waiver of Fuel and Purchase Power Adjustment Rate 58
- Attachment A - Summary of Infrastructure Costs and Proposed IR Rate
- Attachment B - Projected 2026 Revenue Requirement Calculation
- Attachment C - Actual/Projected 2025 Revenue Requirement Calculation
- Attachment D - Carry Charge Calculation
- Attachment E - 2024 Integrated Resource Plan Addendum
- Attachment F - Report of Tariff Schedule Change
- Attachment G - Notice to Customers of Filing
- Tariff Page
- 12/22/25 - Staff's First Set of Data Requests to Montana-Dakota Utilities Co. Certificate of Service
- 03/26/26 - Montana-Dakota Utilities Co.'s Letter regarding Copy of Bill Insert
- 04/24/26 - Staff's Second Set of Data Requests to Montana-Dakota Utilities Co. Certificate of Service
- 04/24/26 - Staff's Third Set of Data Requests to Montana-Dakota Utilities Co. Certificate of Service
