Wyoming · Investor Owned
Montana-Dakota Utilities Co
11.96¢ per kWh, bundled, EIA-861 2025. Average bill $101.04 at 844.8 kWh a month, across 14,993 customers on that row.
Wyoming averaged 13.37¢/kWh and $111.59 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: 14,993, the largest residential count across service types.
Estimate a bill
The figure below is this utility's 2025 EIA residential average.
2025 EIA average
$119.60
11.96¢/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 | 10.20¢ | $85.89 | 842.4 | 13,112 |
| 2016 | 10.24¢ | $87.28 | 852.7 | 13,202 |
| 2017 | 11.15¢ | $95.50 | 856.7 | 13,351 |
| 2018 | 11.28¢ | $97.79 | 866.9 | 13,474 |
| 2019 | 10.64¢ | $91.79 | 862.4 | 13,612 |
| 2020 | 10.58¢ | $93.48 | 883.5 | 13,704 |
| 2021 | 10.94¢ | $95.83 | 876.3 | 13,980 |
| 2022 | 11.03¢ | $100.11 | 907.7 | 14,173 |
| 2023 | 12.13¢ | $102.68 | 846.6 | 14,457 |
| 2024 | 11.77¢ | $99.91 | 848.7 | 14,706 |
| 2025 | 11.96¢ | $101.04 | 844.8 | 14,993 |
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
Johnson, Sheridan.
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