Capacity and Energy Supply for Sheridan

Montana-Dakota Utilities Co. is seeking proposals for 50–100 MW of capacity, energy, replacement energy, and ancillary services to serve its Sheridan, Wyoming system, with a desired 10-year term beginning January 1, 2029.

Montana-Dakota Utilities Co.


General
Open
Dec 16, 2026 12:00 PM
Oct 30, 2026 12:00 PM
10 years
Request for Proposal (RFP)
Private
Ask AI about this solicitation
Contact
peter.thiessen@mdu.com
+17012227723
400 North 4th Street, Bismarck, ND, USA
Submission Instructions
Email
Description

Montana-Dakota Utilities Co. is seeking proposals for capacity, energy, replacement energy, and ancillary services to supplement and firm its 25% ownership share of the Wygen III generating station and serve its Sheridan system load. Proposals may offer a power purchase agreement, an asset sale, or an asset sale option. The desired supply is 60 MW, with 50–100 MW considered; the desired term is 10 years, with 3–20 years considered. The desired start date is January 1, 2029, with later starts through 2031 considered. Proposals must identify the supply resources and delivery arrangements, and include pricing and associated costs. Ancillary services include generation scheduling, load scheduling and balancing, transmission and pseudo-point agreement management, and required reserves. Proposals are evaluated on price and non-price factors, including reliability, deliverability, credit, environmental impacts, and commercial considerations.

Classification Codes
NAICS221118Other Electric Power Generation
PSC9105Electricity generation procured as a supply from a third-party generation supplier and energy attributes; where permitted by state and/or federal law or regulation, excludes ‘regulated utility services’.
Smart Codes
electric capacity supplywholesale energy supplyelectric ancillary services
Specifications
Supply & Service
Timeline
Nov 18, 2026-Notice of Intent to Bid Due
Dec 14, 2026-Confidentiality Agreement Due
Dec 16, 2026-Proposal Deadline
Jan 13, 2027-Short-List Notification
Feb 12, 2027-Selection Process Complete
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