Cost to Run a Evaporative (Swamp) Cooler in Oregon
Oregon's average residential electricity rate is 15.8¢/kWh as of April 2026 — the 22nd cheapest in the country, 16% below the U.S. average. At typical usage (8 hours/day), a evaporative (swamp) cooler here costs $15.37 per month.
Per hour
6.3¢
at 100–800 W
Per day
$0.51
8 hours/day
Per month
$15.37
97 kWh
Per year
$185
1,168 kWh
By usage level in Oregon
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (4 hrs/day) | $0.25 | $7.69 | $92.27 |
| Typical (8 hrs/day) | $0.51 | $15.37 | $185 |
| Heavy (16 hrs/day) | $1.01 | $30.74 | $369 |
Oregon 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 Oregon?
At Oregon's current average residential rate of 15.8¢/kWh (April 2026), a evaporative (swamp) cooler with typical usage costs about $0.51 per day, $15.37 per month, or $185 per year.
Is running a evaporative (swamp) cooler in Oregon more expensive than average?
No — it's cheaper. Oregon's rate is about 16% below the U.S. average: $15.37 per month here versus $18.29 nationally.
What does electricity cost in Oregon right now?
Oregon residents pay an average of 15.8¢ per kWh as of April 2026 — the 22nd cheapest rate of the 51 U.S. jurisdictions we track.