Cost to Run a Portable Air Conditioner 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 (8 hours/day), a portable air conditioner here costs $58.12 per month.
Per hour
$0.24
at 700–1,500 W
Per day
$1.91
8 hours/day
Per month
$58.12
243 kWh
Per year
$698
2,920 kWh
By usage level in Illinois
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (4 hrs/day) | $0.96 | $29.06 | $349 |
| Typical (8 hrs/day) | $1.91 | $58.12 | $698 |
| Heavy (16 hrs/day) | $3.82 | $116 | $1,396 |
Illinois vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a portable air conditioner in Illinois?
At Illinois's current average residential rate of 23.9¢/kWh (May 2026), a portable air conditioner with typical usage costs about $1.91 per day, $58.12 per month, or $698 per year.
Is running a portable air conditioner in Illinois more expensive than average?
Yes. Illinois's electricity costs about 30% more than the U.S. average, so the same usage costs $58.12 per month here versus $44.75 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.