Cost to Run a Garage Heater in Idaho
Idaho's average residential electricity rate is 12.4¢/kWh as of May 2026 — the 1st cheapest in the country, 33% below the U.S. average. At typical usage (3 hours/day), a garage heater here costs $56.54 per month.
Per hour
$0.62
at 2,400–7,500 W
Per day
$1.86
3 hours/day
Per month
$56.54
456 kWh
Per year
$679
5,475 kWh
By usage level in Idaho
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (1.5 hrs/day) | $0.93 | $28.27 | $339 |
| Typical (3 hrs/day) | $1.86 | $56.54 | $679 |
| Heavy (6 hrs/day) | $3.72 | $113 | $1,358 |
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 12.4¢/kWh (May 2026), a garage heater with typical usage costs about $1.86 per day, $56.54 per month, or $679 per year.
Is running a garage heater in Idaho more expensive than average?
No — it's cheaper. Idaho's rate is about 33% below the U.S. average: $56.54 per month here versus $83.90 nationally.
What does electricity cost in Idaho right now?
Idaho residents pay an average of 12.4¢ per kWh as of May 2026 — the 1st cheapest rate of the 51 U.S. jurisdictions we track.