Cost to Run a Box Fan 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 box fan here costs $2.68 per month.
Per hour
1.1¢
at 50–100 W
Per day
8.8¢
8 hours/day
Per month
$2.68
18 kWh
Per year
$32.19
219 kWh
By usage level in Montana
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (4 hrs/day) | 4.4¢ | $1.34 | $16.10 |
| Typical (8 hrs/day) | 8.8¢ | $2.68 | $32.19 |
| Heavy (16 hrs/day) | $0.18 | $5.36 | $64.39 |
Montana vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a box fan in Montana?
At Montana's current average residential rate of 14.7¢/kWh (May 2026), a box fan with typical usage costs about 8.8¢ per day, $2.68 per month, or $32.19 per year.
Is running a box fan in Montana more expensive than average?
No — it's cheaper. Montana's rate is about 20% below the U.S. average: $2.68 per month here versus $3.36 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.