Cost to Run a Garage Heater in Idaho
Idaho's average residential electricity rate is 12.7¢/kWh as of April 2026 — the 2nd cheapest in the country, 32% below the U.S. average. At typical usage (3 hours/day), a garage heater here costs $57.91 per month.
Per hour
$0.64
at 2,400–7,500 W
Per day
$1.91
3 hours/day
Per month
$57.91
456 kWh
Per year
$695
5,475 kWh
By usage level in Idaho
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (1.5 hrs/day) | $0.95 | $28.96 | $348 |
| Typical (3 hrs/day) | $1.91 | $57.91 | $695 |
| Heavy (6 hrs/day) | $3.81 | $116 | $1,391 |
Idaho 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 Idaho?
At Idaho's current average residential rate of 12.7¢/kWh (April 2026), a garage heater with typical usage costs about $1.91 per day, $57.91 per month, or $695 per year.
Is running a garage heater in Idaho more expensive than average?
No — it's cheaper. Idaho's rate is about 32% below the U.S. average: $57.91 per month here versus $85.73 nationally.
What does electricity cost in Idaho right now?
Idaho residents pay an average of 12.7¢ per kWh as of April 2026 — the 2nd cheapest rate of the 51 U.S. jurisdictions we track.