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Rocky Mountain Power electric rates

Updated October 7, 2026 · Source: EIA Form 861 (2024)

Investor-owned utility serving 74,170 homes in Idaho.

Your rate

12.11¢per kWh, average residential rate 26% lower than the U.S. average (16.4¢)

$109average monthly bill$1,306 a year

899kWh used per month, average home

+16%rate change since 2020U.S. average: +28%

Estimate your bill

Electricity you use each month (kWh)

It's on your bill, usually near the top. Starting at 899 kWh, the average for Rocky Mountain Power homes.

kWh

$109 a month

$12 fixed charge + 10.8¢ × 899 kWh

This is an estimate. Uses the EIA average rate with a nominal $12 fixed charge; real tariffs have tiers, time-of-use pricing and riders. Your bill also includes taxes and fuel adjustments that change month to month.

Rate cases

No rate case on file for Rocky Mountain Power right now. We check regulator dockets weekly; last check October 7, 2026. Know of one?

Rate history

Rocky Mountain Power's average rate is up 16% since 2020, versus +28% for the U.S. average.

Average residential revenue per kWh, EIA-861. Includes delivery and, where the utility sells it, supply.

Rebates for heat pumps, batteries and EV chargers

We haven't found utility-level rebates for Rocky Mountain Power yet. Check Idaho programs or read what's left after the federal credits ended.

About Rocky Mountain Power

Legal name: PacifiCorp (Berkshire Hathaway Energy)
Ownership: Investor Owned
Homes served: 74,170 residential customers (2024)
Grid operator: PACE
Retail choice: No — one bundled rate
Data: EIA-861 2024, released October 7, 2026; rate cases checked October 7, 2026

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