NorthWestern Energy LLC: average rate and electric bill (2025)
NorthWestern Energy LLC (investor-owned utility, Montana) served 333,711 homes in 2025. The average customer used 707 kWh a month and paid $102, an average price of 14.4¢ per kWh including fixed charges, riders and taxes. That is 11% above the Montana average of 13.0¢.
What a bill costs at NorthWestern Energy LLC's average price
| Monthly usage | Estimated bill |
|---|---|
| 500 kWh | $72 |
| 1,000 kWh | $144 |
| 1,500 kWh | $216 |
The average price spreads fixed monthly charges over all kWh. At low usage your price per kWh is higher, at high usage lower. Your current tariff can differ from the 2025 average, especially after a rate case.
Calculate your bill · Heat pump vs furnace with this rate
Delivery-only customers
2 customers of NorthWestern Energy LLC bought their electricity supply from another provider and paid NorthWestern Energy LLC only for delivery: an average of 8.0¢/kWh. Their total price is that delivery charge plus their supplier's energy price.
Compare with other utilities in Montana
| Name | ¢/kWh | Avg. bill |
|---|---|---|
| Flathead Electric Coop Inc | 10.0 | $119 |
| Yellowstone Valley Elec Co-op | 14.2 | $127 |
| NorthWestern Energy LLC | 14.4 | $102 |
Source: U.S. Energy Information Administration, Form EIA-861 annual data 2025 (released October 2026), utility ID 12825. Average price = residential revenue ÷ residential kWh sold; average bill = revenue ÷ customers ÷ 12.