Cost to Run a Evaporative (Swamp) Cooler 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 evaporative (swamp) cooler here costs $31.52 per month.
Per hour
$0.13
at 100–800 W
Per day
$1.04
8 hours/day
Per month
$31.52
97 kWh
Per year
$378
1,168 kWh
By usage level in Maine
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (4 hrs/day) | $0.52 | $15.76 | $189 |
| Typical (8 hrs/day) | $1.04 | $31.52 | $378 |
| Heavy (16 hrs/day) | $2.07 | $63.04 | $757 |
Maine vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a evaporative (swamp) cooler in Maine?
At Maine's current average residential rate of 32.4¢/kWh (July 2026), a evaporative (swamp) cooler with typical usage costs about $1.04 per day, $31.52 per month, or $378 per year.
Is running a evaporative (swamp) cooler in Maine more expensive than average?
Yes. Maine's electricity costs about 77% more than the U.S. average, so the same usage costs $31.52 per month here versus $17.80 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.