Natural Gas Price in Montana (2025)
Natural gas in Montana costs $0.87 per therm on average for homes ($8.99 per Mcf, 2025) – 41% below the US average and the 2nd cheapest of 51 states and DC. The average customer's bill works out to about $53 a month over the year.
Source: EIA annual residential price (2025) and residential use per customer (2024). Latest monthly figure: $1.20/therm in July 2026 (monthly prices swing with the season).
Gas bill in Montana by usage
| Monthly use | Montana | At US average |
|---|---|---|
| 30 therms (29 ccf) | $26.01 | $44.38 |
| 60 therms (58 ccf) | $52.02 | $88.76 |
| 100 therms (96 ccf) | $86.69 | $147.93 |
| 150 therms (145 ccf) | $130.04 | $221.89 |
Average price includes delivery and fixed charges spread over all gas sold. Roughly: 30 therms is a summer month with a gas water heater and stove; 100–150 therms is a cold-climate winter month with gas heat.
Price trend
Montana's average residential price rose from $8.22 per Mcf in 2024 to $8.99 in 2025 (+9.4%). Nationally it went from $14.50 to $15.34.
Gas vs electricity in Montana
One therm of gas holds the same energy as 29.3 kWh of electricity. At Montana's 14.99¢/kWh, that much electricity costs $4.39 versus $0.87 for the gas. Gas furnaces turn 80–97% of that into heat, while a heat pump delivers 2–3 times the electricity it uses. Run your own numbers with the heat pump vs furnace calculator, and see electricity cost in Montana.
How Montana compares
- Idaho: $0.74/therm, about $45/month
- North Dakota: $0.92/therm, about $58/month
- New Mexico: $0.95/therm, about $47/month
- US average: $1.48/therm, about $76/month.
Other Mountain states: Idaho ($0.74), New Mexico ($0.95), Utah ($0.98), Colorado ($1.08), Wyoming ($1.13), Nevada ($1.27), Arizona ($1.79).
Frequently asked questions
How much is natural gas per therm in Montana?
Montana residential customers paid an average of $0.87 per therm in 2025 ($8.99 per thousand cubic feet), including delivery charges. That is 41% below the US average of $1.48 and ranks 2nd cheapest of 51.
What is the average gas bill in Montana?
The average Montana gas customer used about 71.2 Mcf (738 therms) a year in 2024, which works out to about $53 a month at 2025 prices, averaged over the year. Winter bills are much higher than summer bills.
Has natural gas gone up in Montana?
The average price rose from $8.22 per Mcf in 2024 to $8.99 in 2025 (+9.4%).
Is gas or electric heat cheaper in Montana?
Per unit of energy, gas at $0.87/therm compares with $4.39 for the same energy from electricity at 14.99¢/kWh. A heat pump delivers 2–3 units of heat per unit of electricity, so it can still beat gas – compare with your numbers in the heat pump vs furnace calculator.
Sources: EIA natural gas prices; EIA residential deliveries; EIA number of consumers.