Electricity in Butte, Montana
NorthWestern Energy is the main electric utility in Silver Bow County, where Butte is. The average NorthWestern Energy home paid $101.97 a month in 2025 (14.4¢ per kWh). The Montana average was $110.80.
- 35,469 people (2025 estimate)
- Silver Bow County
- EIA data, 2025
Electric utilities in Butte
| Utility | Homes in Montana | Average bill 2025 | 1,000 kWh now |
|---|---|---|---|
| NorthWestern EnergyInvestor-owned utility · bill calculator | 333,713 | $101.97707 kWh, 14.4¢ | $162.48 |
2 smaller utilities with fewer than 1,000 homes are also listed in the county. The average bill is the 2025 average of each utility's homes that bought their power from it (EIA-861); a dash means that its homes buy power from a retail supplier. The 1,000 kWh bill is from the official tariff, before taxes, for the utilities that have a calculator on this site. The Montana average was $110.80 a month for 853 kWh (13.0¢ per kWh).
Solar power in Butte
A home solar system on a south-facing roof in Butte makes about 1,305 kWh a year for each kW of panels (PVWatts, National Laboratory of the Rockies). A 6 kW system makes about 7,829 kWh a year. See what that saves on your utility's rates with the solar savings calculator.
Lower your electric bill in Butte
- Open your utility above for its average bill, outages and rates, or the bill calculator to check your own bill.
- Help paying your NorthWestern Energy bill: 5 programs, with who qualifies and how to apply.
- Help paying the electric bill in Montana: bill assistance, payment plans and discounts.
- Why is my electric bill so high? and the appliance cost calculator.
More about Montana: Montana electric rates and all Montana utilities, business electricity rates and natural gas bills. Other cities: Billings, Bozeman, Great Falls, Helena, Kalispell, Missoula.
Who provides electricity in Butte, MT?
NorthWestern Energy is the main electric utility in Silver Bow County, where Butte is.
What is the average electric bill in Butte, MT?
The average NorthWestern Energy home paid $101.97 a month in 2025 (14.4¢ per kWh). The Montana average was $110.80 a month for 853 kWh. Your bill depends on your kWh and your rate plan.
utilityratecalc.com is not part of any utility or city government. Sources: Census Bureau city population estimates, Vintage 2025 (the city and its counties); EIA-861 data, 2025 (utilities by county, homes and average bills).