Cost to Run a Window Air Conditioner in Maine
Maine's average residential electricity rate is 32.4¢/kWh as of July 2026 — the 49th cheapest in the country, 77% above the U.S. average. At typical usage (8 hours/day), a window air conditioner here costs $70.92 per month.
Per hour
$0.29
at 500–1,500 W
Per day
$2.33
8 hours/day
Per month
$70.92
219 kWh
Per year
$851
2,628 kWh
By usage level in Maine
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (4 hrs/day) | $1.17 | $35.46 | $426 |
| Typical (8 hrs/day) | $2.33 | $70.92 | $851 |
| Heavy (16 hrs/day) | $4.67 | $142 | $1,703 |
Maine vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a window air conditioner in Maine?
At Maine's current average residential rate of 32.4¢/kWh (July 2026), a window air conditioner with typical usage costs about $2.33 per day, $70.92 per month, or $851 per year.
Is running a window air conditioner in Maine more expensive than average?
Yes. Maine's electricity costs about 77% more than the U.S. average, so the same usage costs $70.92 per month here versus $40.06 nationally.
What does electricity cost in Maine right now?
Maine residents pay an average of 32.4¢ per kWh as of July 2026 — the 49th cheapest rate of the 51 U.S. jurisdictions we track.