States › Montana › September 2025
Montana electricity prices, September 2025
Average price, sales and bills for the month against the same month a year earlier and the US. Preliminary
In September 2025, residential customers in Montana paid an average of 14.64¢ per kilowatthour, up 8.8% on the same month a year earlier (13.45¢). The US average for the month was 18.08¢; Montana was 19% below that. It ranked 40th highest among the 50 states and the District of Columbia.
Residential sales were 402,104 MWh, up 6.9% on a year earlier, and the average residential bill for the month was $103.59 on 708 kWh. Weather moves monthly sales far more than prices do, so bills swing with the season.
EIA marks this month as preliminary. Preliminary months come from the Form EIA-861M sample and are revised when the annual census is complete.
Average price is revenue divided by sales for the sector and year; it is not a tariff rate. Reliability figures are as reported by utilities to EIA on Form 861 and may use different calculation methods. Monthly figures come from the Form EIA-861M sample and are revised when EIA finalises the year.
Price by sector
| Sector | Sep 2025 | Sep 2024 | Change | US, Sep 2025 |
|---|---|---|---|---|
| Residential | 14.64¢ | 13.45¢ | +8.8% | 18.08¢ |
| Commercial | 12.94¢ | 12.16¢ | +6.4% | 13.99¢ |
| Industrial | 7.32¢ | 7.05¢ | +3.8% | 9.02¢ |
| All sectors | 11.74¢ | 10.89¢ | +7.8% | 14.21¢ |
Sales and customers
| Measure | Sep 2025 | Sep 2024 | Change |
|---|---|---|---|
| Residential sales | 402.1 GWh | 376.2 GWh | +6.9% |
| Sales, all sectors | 1.2 TWh | 1.2 TWh | +2.4% |
| Residential customers | 568,137 | 558,825 | +1.7% |
| Average residential bill | $103.59 | $90.56 | +14.4% |
| Average residential use, kWh | 708 | 673 | +5.2% |
| US residential price | 18.08¢ | 16.82¢ | +7.5% |
The two years to September 2025
Montana residentialUS residential
Questions and answers
What was the average electricity price in Montana in September 2025?
14.64¢ per kilowatthour for residential customers, 12.94¢ for commercial and 7.32¢ for industrial customers. EIA marks the month as preliminary.
How does that compare with a year earlier?
The residential average was 13.45¢ in September 2024, a change of +8.8%. Residential sales changed by +6.9% over the same period.
What was the average residential bill that month?
$103.59, on average use of 708 kWh. This is residential revenue divided by residential customers for the month.
Provenance
Source: U.S. Energy Information Administration, Form EIA-861M sales and revenue workbook (state by sector and month), status "Preliminary" for this month, series published through July 2026. Public domain. Price = revenue ÷ sales; bill = residential revenue ÷ residential customers. Utility-level annual figures are on the Montana page.