Idaho Power has implemented new rates, effective Jan. 1, 2026, as a result of a general rate review by the Idaho Public Utilities Commission (IPUC) that began in June 2025. Rates will increase an average of 7.48% overall for Idaho customers, with no change to customers’ monthly service fee. This increase was the result of the IPUC approving a settlement stipulation Idaho Power filed in October.
What is a general rate case?
A general rate case is a proceeding used by the IPUC to review the costs of operating and maintaining the utility system and how those costs are allocated among customers.
Why did Idaho Power file a general rate case?
This case was driven by rapid growth across our service area as well as reliability-related projects, which necessitates new energy production and storage resources, added grid investments and maintenance costs, wildfire resilience upgrades, and increased labor expenses. Idaho Power invested more than $1 billion in our system in 2025. Establishing new general rates will help us recover the costs of safely and reliably providing service to our growing service area.
What are the customer impacts?
Starting Jan. 1, an average Idaho residential customer using 900 kilowatt-hours will see a monthly bill increase of about $12.13. Impacts for all Idaho customers are shown in the table. Actual percentages will depend on a customer’s classification and the rate they pay.
General Rate Case Settlement
Percentage Change from Current Billed Revenue
| Residential | Small General Service | Large General Service1 | Large Power2 | Irrigation |
| 9.74% | 9.78% | 3.79% | 4.72% | 8.49% |
Did the residential monthly service charge change?
No. The monthly service charge remains $15 for residential customers and $25 for small general service customers. The service charge was adjusted for other customer classes.
What is Idaho Power doing to keep costs down?
Idaho Power has a strong track record of keeping its costs and prices low. The company has saved money and improved reliability by performing certain maintenance tasks with its own crews and refurbishing equipment in-house. Idaho Power also strives to help customers save energy and money through energy efficiency. In 2024, energy efficiency programs saved 143,537 megawatt-hours — enough to power 12,600 average-sized homes for a year.
What resources does Idaho Power have to help customers struggling to pay their energy bill?
We know rising costs can be a burden, and we have resources available to help customers struggling to pay their bill. Project Share is a year-round energy assistance program administered by The Salvation Army and funded by customer donations and Idaho Power shareholder funds. Idaho Power also offers energy assistance programs and convenient features like Budget Pay that can help customers manage their energy usage and bills.
Are large data centers causing rate increases for all customers?
No. Idaho requires large energy users to fund any infrastructure needed to interconnect their business, and Idaho Power follows a detailed process for onboarding large load customers to ensure their operations do not negatively impact other customers, or the grid. The residential customer sector accounts for the largest share of our year-over-year load growth from 2024 to 2025.
Why do large business customers have a lower percentage increase?
Rate increase percentages vary by customer type. While the IPUC makes the final ruling on how these costs are assigned, Idaho Power generally seeks to align rates for each customer class with the costs required to serve that class. In this rate review, forecasted revenues from large general service and large power customers were closer to the expected costs of serving those classes.
How does this impact Idaho Power’s prices and affordability?
Even with this increase, our prices remain 20 to 30% lower than the national average. We understand the impact rate increases have on our customers, and we remain committed to affordability. At the same time, we’re investing in the grid to make it more resilient and to reliably serve our customers during a period of rapid growth. We are working hard to balance both objectives. See how our rates compare nationally at idahopower.com/pricing.
How can I learn more?
To view the full case documents, visit the IPUC’s website and reference case No. IPC-E-25-16.If you have additional questions, call us at 1-800-632-6605.