Cost to Run a Oil-Filled Radiator 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 (8 hours/day), a oil-filled radiator heater here costs $54.72 per month.
Per hour
$0.22
at 700–1,500 W
Per day
$1.80
8 hours/day
Per month
$54.72
365 kWh
Per year
$657
4,380 kWh
By usage level in Montana
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (4 hrs/day) | $0.90 | $27.36 | $329 |
| Typical (8 hrs/day) | $1.80 | $54.72 | $657 |
| Heavy (16 hrs/day) | $3.60 | $109 | $1,314 |
Montana vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a oil-filled radiator heater in Montana?
At Montana's current average residential rate of 15¢/kWh (July 2026), a oil-filled radiator heater with typical usage costs about $1.80 per day, $54.72 per month, or $657 per year.
Is running a oil-filled radiator heater in Montana more expensive than average?
No — it's cheaper. Montana's rate is about 18% below the U.S. average: $54.72 per month here versus $66.76 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.