Cost to Run a Garage Heater in Montana
Montana's average residential electricity rate is 15¢/kWh as of July 2026 — the 15th cheapest in the country, 18% below the U.S. average. At typical usage (3 hours/day), a garage heater here costs $68.40 per month.
Per hour
$0.75
at 2,400–7,500 W
Per day
$2.25
3 hours/day
Per month
$68.40
456 kWh
Per year
$821
5,475 kWh
By usage level in Montana
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (1.5 hrs/day) | $1.13 | $34.20 | $411 |
| Typical (3 hrs/day) | $2.25 | $68.40 | $821 |
| Heavy (6 hrs/day) | $4.50 | $137 | $1,643 |
Montana vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a garage heater in Montana?
At Montana's current average residential rate of 15¢/kWh (July 2026), a garage heater with typical usage costs about $2.25 per day, $68.40 per month, or $821 per year.
Is running a garage heater in Montana more expensive than average?
No — it's cheaper. Montana's rate is about 18% below the U.S. average: $68.40 per month here versus $83.45 nationally.
What does electricity cost in Montana right now?
Montana residents pay an average of 15¢ per kWh as of July 2026 — the 15th cheapest rate of the 51 U.S. jurisdictions we track.