Montana · Investor Owned
Montana-Dakota Utilities Co
12.33¢ per kWh, bundled, EIA-861 2025. Average bill $95.31 at 773.3 kWh a month, across 19,626 customers on that row.
Montana averaged 12.99¢/kWh and $110.80 a month. The United States averaged 17.23¢/kWh and $150.68. State and national figures come from EIA's Average Bill file.
Revenue divided by sales, EIA-861 Sales to Ultimate Customers, 2025, released October 7, 2026. Texas wires utilities come from the Delivery Companies file. The price and bill use bundled service. Customer count: 19,626, the largest residential count across service types.
Estimate a bill
The figure below is this utility's 2025 EIA residential average.
2025 EIA average
$123.30
12.33¢/kWh × 1,000 kWh. Bundled residential average, EIA-861 2025. The customer charge is already folded into this average, so it stands beside a tariff total rather than being added to it.
Annual history
| Year | ¢/kWh | Avg. bill | Avg. kWh | Customers |
|---|---|---|---|---|
| 2015 | 8.71¢ | $68.43 | 785.8 | 20,257 |
| 2016 | 8.74¢ | $66.72 | 763.4 | 20,069 |
| 2017 | 9.42¢ | $74.58 | 791.8 | 19,962 |
| 2018 | 9.61¢ | $76.62 | 797.0 | 19,918 |
| 2019 | 10.76¢ | $83.36 | 774.7 | 19,839 |
| 2020 | 10.90¢ | $84.54 | 775.7 | 19,798 |
| 2021 | 10.90¢ | $85.44 | 783.7 | 19,760 |
| 2022 | 11.26¢ | $92.29 | 819.4 | 19,658 |
| 2023 | 11.84¢ | $92.49 | 781.3 | 19,629 |
| 2024 | 12.89¢ | $97.92 | 759.9 | 19,616 |
| 2025 | 12.33¢ | $95.31 | 773.3 | 19,626 |
EIA-861, 2015–2025, using the same service type as the 2025 figure. A blank year means that service was not in the file.
Counties
Custer, Daniels, Dawson, Fallon, McCone, Prairie, Richland, Roosevelt, Rosebud, Sheridan, Wibaux.
EIA-861 Service Territory, 2025. A listed county is the county EIA recorded. It does not mean every address in the county is served. Open this utility in the bill calculator · Rate history tool