Cost to Run a Oil-Filled Radiator 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 (8 hours/day), a oil-filled radiator heater here costs $53.63 per month.
Per hour
$0.22
at 700–1,500 W
Per day
$1.76
8 hours/day
Per month
$53.63
365 kWh
Per year
$644
4,380 kWh
By usage level in Montana
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (4 hrs/day) | $0.88 | $26.81 | $322 |
| Typical (8 hrs/day) | $1.76 | $53.63 | $644 |
| Heavy (16 hrs/day) | $3.53 | $107 | $1,288 |
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 14.7¢/kWh (May 2026), a oil-filled radiator heater with typical usage costs about $1.76 per day, $53.63 per month, or $644 per year.
Is running a oil-filled radiator heater in Montana more expensive than average?
No — it's cheaper. Montana's rate is about 20% below the U.S. average: $53.63 per month here versus $67.12 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.