Cost to Run a Portable Air Conditioner in Maine
Maine's average residential electricity rate is 28.6¢/kWh as of May 2026 — the 46th cheapest in the country, 55% above the U.S. average. At typical usage (8 hours/day), a portable air conditioner here costs $69.56 per month.
Per hour
$0.29
at 700–1,500 W
Per day
$2.29
8 hours/day
Per month
$69.56
243 kWh
Per year
$835
2,920 kWh
By usage level in Maine
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (4 hrs/day) | $1.14 | $34.78 | $418 |
| Typical (8 hrs/day) | $2.29 | $69.56 | $835 |
| Heavy (16 hrs/day) | $4.58 | $139 | $1,670 |
Maine 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 Maine?
At Maine's current average residential rate of 28.6¢/kWh (May 2026), a portable air conditioner with typical usage costs about $2.29 per day, $69.56 per month, or $835 per year.
Is running a portable air conditioner in Maine more expensive than average?
Yes. Maine's electricity costs about 55% more than the U.S. average, so the same usage costs $69.56 per month here versus $44.75 nationally.
What does electricity cost in Maine right now?
Maine residents pay an average of 28.6¢ per kWh as of May 2026 — the 46th cheapest rate of the 51 U.S. jurisdictions we track.