Cost to Run a Portable Air Conditioner in Illinois
Illinois's average residential electricity rate is 20.5¢/kWh as of April 2026 — the 36th cheapest in the country, 9% above the U.S. average. At typical usage (8 hours/day), a portable air conditioner here costs $49.86 per month.
Per hour
$0.20
at 700–1,500 W
Per day
$1.64
8 hours/day
Per month
$49.86
243 kWh
Per year
$599
2,920 kWh
By usage level in Illinois
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (4 hrs/day) | $0.82 | $24.93 | $299 |
| Typical (8 hrs/day) | $1.64 | $49.86 | $599 |
| Heavy (16 hrs/day) | $3.28 | $99.71 | $1,197 |
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 20.5¢/kWh (April 2026), a portable air conditioner with typical usage costs about $1.64 per day, $49.86 per month, or $599 per year.
Is running a portable air conditioner in Illinois more expensive than average?
Yes. Illinois's electricity costs about 9% more than the U.S. average, so the same usage costs $49.86 per month here versus $45.72 nationally.
What does electricity cost in Illinois right now?
Illinois residents pay an average of 20.5¢ per kWh as of April 2026 — the 36th cheapest rate of the 51 U.S. jurisdictions we track.