Cost to Run a Garage Heater in Illinois
Illinois's average residential electricity rate is 23.9¢/kWh as of May 2026 — the 40th cheapest in the country, 30% above the U.S. average. At typical usage (3 hours/day), a garage heater here costs $109 per month.
Per hour
$1.19
at 2,400–7,500 W
Per day
$3.58
3 hours/day
Per month
$109
456 kWh
Per year
$1,309
5,475 kWh
By usage level in Illinois
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (1.5 hrs/day) | $1.79 | $54.49 | $654 |
| Typical (3 hrs/day) | $3.58 | $109 | $1,309 |
| Heavy (6 hrs/day) | $7.17 | $218 | $2,617 |
Illinois 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 Illinois?
At Illinois's current average residential rate of 23.9¢/kWh (May 2026), a garage heater with typical usage costs about $3.58 per day, $109 per month, or $1,309 per year.
Is running a garage heater in Illinois more expensive than average?
Yes. Illinois's electricity costs about 30% more than the U.S. average, so the same usage costs $109 per month here versus $83.90 nationally.
What does electricity cost in Illinois right now?
Illinois residents pay an average of 23.9¢ per kWh as of May 2026 — the 40th cheapest rate of the 51 U.S. jurisdictions we track.