US Energy Price Monitorby KadoaUpdated weeklyStar on GitHub

NewInsight: Investor-owned utilities charge 23% more for power

Montana

NorthWestern Energy electricity rates

What homes pay NorthWestern Energy for electricity, from EIA.

Investor-owned utility, 337,936 homes in Montana. EIA lists it as NorthWestern Energy LLC - (MT).

Headlines

Average price
15.9¢ a kWh
Up 13% on a year ago
Average bill
$108 a month
Up 8.2% on a year ago
Average use
680 kWh
A month. Montana 826 kWh
Price rank in Montana
1 of 6
1 is the most expensive

Over the 12 months to August 2026, NorthWestern Energy homes paid 15.9¢ a kWh, against 13.9¢ across Montana.

NorthWestern Energy vs Montana

NorthWestern EnergyMontana
Average price, 12 months to August 202615.9¢13.9¢
Price in August 202618.6¢15.6¢
Average monthly bill, 12 months$108$115
Bill in August 2026$116$122
Average monthly use680 kWh826 kWh
Price change, past year+13%+9.5%
Price change since 2019+32%+25%

Electricity price

Average residential price a kilowatt-hour, by month.

Up to and including August 2026

Source: EIA-861M monthly utility survey. Revenue over kilowatt-hours sold, including fixed charges.

Average monthly bill

What an average home pays a month.

Up to and including August 2026

Source: EIA-861M monthly utility survey.