13.53¢
per kWh, 2025
[ Rocky Mountain Power Idaho / ID ]
Rocky Mountain Power Idaho electricity rates in Idaho
NO RATE CASE ON FILE · DATA 2025
change in average rate, 2024→2025
+11.7%
vs 2024
75,599
residential customers
+30.1%
since 2020
What your bill becomes
Bill today
No change on file
Difference / month · / year
Estimated at Rocky Mountain Power Idaho's average effective residential rate (13.53¢/kWh, EIA, all charges included). Your tariff, fees and taxes differ.
Rate history 2015–2025
| Year | ¢/kWh | Change | Customers |
|---|---|---|---|
| 2015 | 10.72¢ | — | 60,959 |
| 2016 | 10.69¢ | −0.3% | 61,962 |
| 2017 | 10.65¢ | −0.4% | 63,139 |
| 2018 | 10.37¢ | −2.6% | 64,774 |
| 2019 | 10.20¢ | −1.6% | 66,558 |
| 2020 | 10.40¢ | +2.0% | 68,195 |
| 2021 | 10.39¢ | −0.1% | 70,018 |
| 2022 | 10.77¢ | +3.7% | 71,033 |
| 2023 | 11.02¢ | +2.3% | 72,621 |
| 2024 | 12.11¢ | +9.9% | 74,170 |
| 2025 | 13.53¢ | +11.7% | 75,599 |
How this compares
11.83¢
Idaho average, 2025
+14.4%
Rocky Mountain Power Idaho vs ID 2025 average
−21.5%
vs US 2025 average
#1
priciest in ID
Rocky Mountain Power Idaho files with the EIA as PacifiCorp (utility ID 14354).
Serves 14 counties in Idaho: Bannock, Bear Lake, Bingham, Bonneville, Butte, Caribou, Clark, Franklin, Fremont, Jefferson, Madison, Oneida, Power, Teton. 74 ZIP codes.
Questions
Is Rocky Mountain Power Idaho raising rates in 2026?
No rate case for Rocky Mountain Power Idaho is on file with the Idaho Public Utilities Commission in our tracker. Its average residential rate moved +11.7% from 2024 to 2025. We check the commission docket monthly.
What does Rocky Mountain Power Idaho charge per kWh?
Rocky Mountain Power Idaho's average effective residential rate was 13.53¢ per kWh in 2025 (EIA-861, revenue divided by sales, all charges included). Idaho's 2025 average was 11.83¢.
How much have Rocky Mountain Power Idaho rates gone up in five years?
+30.1% between 2020 and 2025, against +32.1% for Idaho as a whole over the latest five-year window.
How many customers does Rocky Mountain Power Idaho have in Idaho?
75,599 residential customers in 2025, across 14 counties including Bannock, Bear Lake, Bingham, 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
- 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)