11.78¢
per kWh, 2025
[ Idaho Power / ID · IPC-E-25-16 ]
Idaho Power: 9.7% approved for 540,032 Idaho homes
EFFECTIVE · ON BILLS JAN 2026
rate increase approved
12.93¢
per kWh with the increase
540,032
residential customers
+16.9%
since 2020
What your bill becomes
Bill today
After the increase
Difference / month · / year
Estimated at Idaho Power's average effective residential rate (11.78¢/kWh, EIA, all charges included). Your tariff, fees and taxes differ.
Rate case IPC-E-25-16
In effect Docket IPC-E-25-16 ↗
- May 2025Filed with the commission as docket IPC-E-25-16
- Dec 2025Commission approved 9.74% (asked: 17.35%)
- Jan 2026New rates on bills
Idaho Power asked the Idaho Public Utilities Commission on May 30, 2025 for $199.1 million in new annual revenue, a 13.09% overall increase that the company said meant a 17.35% rise in residential billed revenue (about $21.66 a month at 900 kWh). The company cited rapid customer growth, about $1 billion of 2025 infrastructure spending, battery storage, grid upgrades and wildfire-mitigation costs. A settlement filed October 24, 2025 cut the increase to about $110 million (7.48% overall, 9.74% for residential customers), and the commission approved it on December 30, 2025 in Order No. 36892. New rates took effect January 1, 2026, adding about $12.13 a month for a residential customer using 900 kWh, with the $15 monthly service charge unchanged.
Rate history 2015–2025
| Year | ¢/kWh | Change | Customers |
|---|---|---|---|
| 2015 | 10.30¢ | — | 418,906 |
| 2016 | 10.30¢ | +0.0% | 426,966 |
| 2017 | 10.33¢ | +0.3% | 435,376 |
| 2018 | 10.39¢ | +0.6% | 445,693 |
| 2019 | 10.04¢ | −3.4% | 457,755 |
| 2020 | 10.08¢ | +0.4% | 470,804 |
| 2021 | 10.39¢ | +3.1% | 485,475 |
| 2022 | 10.70¢ | +3.0% | 498,920 |
| 2023 | 11.65¢ | +8.9% | 510,236 |
| 2024 | 11.76¢ | +0.9% | 525,751 |
| 2025 | 11.78¢ | +0.2% | 540,032 |
How this compares
11.83¢
Idaho average, 2025
−0.4%
Idaho Power vs ID 2025 average
−31.6%
vs US 2025 average
#5
priciest in ID
Idaho Power files with the EIA as Idaho Power Co (utility ID 9191).
Serves 24 counties in Idaho: Ada, Adams, Bannock, Bingham, Blaine, Boise, Camas, Canyon, Cassia, Elmore, Gem, Gooding, Idaho, Jerome, Lemhi, Lincoln, Minidoka, Oneida, Owyhee, Payette, Power, Twin Falls, Valley, Washington. 164 ZIP codes.
Questions
Did Idaho Power get a rate increase?
Yes. The Idaho Public Utilities Commission approved 9.74% in docket IPC-E-25-16 in Dec 2025, with new rates on bills from Jan 2026. The company had asked for 17.35%.
What does Idaho Power charge per kWh?
Idaho Power's average effective residential rate was 11.78¢ per kWh in 2025 (EIA-861, revenue divided by sales, all charges included). Idaho's 2025 average was 11.83¢.
How much have Idaho Power rates gone up in five years?
+16.9% between 2020 and 2025, against +32.1% for Idaho as a whole over the latest five-year window.
How many customers does Idaho Power have in Idaho?
540,032 residential customers in 2025, across 24 counties including Ada, Adams, Bannock, according to the EIA-861 survey.
Where do these numbers come from?
Rates and customer counts are from the US Energy Information Administration's annual EIA-861 survey; rate-case facts are from the Idaho Public Utilities Commission docket linked on this page. Nothing here is a utility bill; use it to understand the direction and size of changes.
Sources
Last verified 2026-10-16
- Idaho Public Utilities Commission: news release on Order No. 36892 approving the settlement (Dec. 30, 2025) checked 2026-10-16
- Idaho Public Utilities Commission: Notice of Application, Order No. 36638 (Case IPC-E-25-16) checked 2026-10-16
- Idaho Public Utilities Commission: Final Order No. 36892 (Dec. 30, 2025) checked 2026-10-16
- Idaho Power: Idaho Power Files General Rate Case (May 30, 2025 release with class table) checked 2026-10-16
- KIVI Idaho News 6: Idaho Power lowers rate hike proposal, now seeks $110 million increase checked 2026-10-16
- Boardroom Alpha: IDACORP Form 8-K on the approved settlement (Dec. 31, 2025) checked 2026-10-16
- EIA-861 Sales to Ultimate Customers, 2015–2025 (released 2026-10-07)
- EIA-861M monthly state averages through Jul 2026
- NREL utility-by-ZIP lookup (2024)