Montana · Investor Owned
Black Hills Power, Inc.
6.99¢ per kWh, bundled, EIA-861 2025. Average bill $55.13 at 788.5 kWh a month, across 13 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: 13, the largest residential count across service types.
Estimate a bill
The figure below is this utility's 2025 EIA residential average.
2025 EIA average
$69.90
6.99¢/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 | 8.54¢ | $48.61 | 569.4 | 12 |
| 2016 | 7.89¢ | $41.67 | 527.8 | 12 |
| 2017 | 6.87¢ | $42.31 | 615.4 | 13 |
| 2018 | 6.67¢ | $44.87 | 673.1 | 13 |
| 2019 | 6.78¢ | $51.28 | 756.4 | 13 |
| 2020 | 6.73¢ | $48.61 | 722.2 | 12 |
| 2021 | 6.80¢ | $48.61 | 715.3 | 12 |
| 2022 | 6.75¢ | $70.51 | 1,044.9 | 13 |
| 2023 | 6.67¢ | $72.22 | 1,083.3 | 12 |
| 2024 | 6.96¢ | $60.42 | 868.1 | 12 |
| 2025 | 6.99¢ | $55.13 | 788.5 | 13 |
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
Carter, Powder River.
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