20251219News Release.pdf

Idaho Public Utilities Commission Brad Littte,Governor
P.O. Boot 83720. Boise. ID 83720-0074 Edward Lodge, Resident
John R.Hamnwnd, Jr.,Commissioner
Dayn Hardie,Commissioner
Case No. PAC-E-25-12
Order No. 36868
Contact: Adam Rush
Office: [phone]
E-mail: [e-mail]
NEWS RELEASE: Commission acknowledges electric utility's long-range planning document.
BOISE (Dec. 18, 2025)—The Idaho Public Utilities Commission has acknowledged a long-
range planning document filed by Rocky Mountain Power that provides information on how the
utility will meet customers' future needs for electricity.
The utility,which serves customers in eastern Idaho, filed its 2025 Integrated Resource Plan
(IRP)with the Commission on March 31, 2025. The IRP is filed every other year and is used by
Rocky Mountain Power to guide the acquisition of resources. The utility said the plan analyzes
different resources such as wind, solar,plant upgrades, energy storage and energy efficiency
through software-based modeling to determine the best mix of resources. The plan also considers
costs and risks associated with the resources.
The utility plans to add additional wind resources, storage resources, solar resources and nuclear
resources to meet the demand for electricity. Rocky Mountain Power anticipates adding
approximately 17,000 additional customers to its service area by 2034.
The Commission's acknowledgement of the IRP reflects that it is a working document that
incorporates assumptions and projections at a specific point in time. The Commission
acknowledges the utility's ongoing planning process, not the conclusions or results reached
through the process.
Additional information is available at: puc.idaho.gov/case/Details/7553.