Cost to Run a Garage Heater in Montana
Montana's average residential electricity rate is 14.7¢/kWh as of May 2026 — the 13th cheapest in the country, 20% below the U.S. average. At typical usage (3 hours/day), a garage heater here costs $67.03 per month.
Per hour
$0.73
at 2,400–7,500 W
Per day
$2.21
3 hours/day
Per month
$67.03
456 kWh
Per year
$805
5,475 kWh
By usage level in Montana
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (1.5 hrs/day) | $1.10 | $33.52 | $402 |
| Typical (3 hrs/day) | $2.21 | $67.03 | $805 |
| Heavy (6 hrs/day) | $4.41 | $134 | $1,610 |
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 14.7¢/kWh (May 2026), a garage heater with typical usage costs about $2.21 per day, $67.03 per month, or $805 per year.
Is running a garage heater in Montana more expensive than average?
No — it's cheaper. Montana's rate is about 20% below the U.S. average: $67.03 per month here versus $83.90 nationally.
What does electricity cost in Montana right now?
Montana residents pay an average of 14.7¢ per kWh as of May 2026 — the 13th cheapest rate of the 51 U.S. jurisdictions we track.