Cost to Run a Portable Air Conditioner in Illinois
Illinois's average residential electricity rate is 19.2¢/kWh as of July 2026 — the 35th cheapest in the country, 5% above the U.S. average. At typical usage (8 hours/day), a portable air conditioner here costs $46.69 per month.
Per hour
$0.19
at 700–1,500 W
Per day
$1.54
8 hours/day
Per month
$46.69
243 kWh
Per year
$561
2,920 kWh
By usage level in Illinois
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (4 hrs/day) | $0.77 | $23.35 | $280 |
| Typical (8 hrs/day) | $1.54 | $46.69 | $561 |
| Heavy (16 hrs/day) | $3.07 | $93.39 | $1,121 |
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 19.2¢/kWh (July 2026), a portable air conditioner with typical usage costs about $1.54 per day, $46.69 per month, or $561 per year.
Is running a portable air conditioner in Illinois more expensive than average?
Yes. Illinois's electricity costs about 5% more than the U.S. average, so the same usage costs $46.69 per month here versus $44.51 nationally.
What does electricity cost in Illinois right now?
Illinois residents pay an average of 19.2¢ per kWh as of July 2026 — the 35th cheapest rate of the 51 U.S. jurisdictions we track.