Cost to Run a Aquarium in Washington
Washington's average residential electricity rate is 15¢/kWh as of May 2026 — the 16th cheapest in the country, 18% below the U.S. average. At typical usage (24 hours/day (always on)), a aquarium here costs $10.94 per month.
Per hour
1.5¢
at 50–300 W
Per day
$0.36
24 hours/day (always on)
Per month
$10.94
73 kWh
Per year
$131
876 kWh
By usage level in Washington
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (12 hrs/day) | $0.18 | $5.47 | $65.70 |
| Typical (24 hrs/day) | $0.36 | $10.94 | $131 |
| Heavy (24 hrs/day) | $0.72 | $21.89 | $263 |
Washington vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a aquarium in Washington?
At Washington's current average residential rate of 15¢/kWh (May 2026), a aquarium with typical usage costs about $0.36 per day, $10.94 per month, or $131 per year.
Is running a aquarium in Washington more expensive than average?
No — it's cheaper. Washington's rate is about 18% below the U.S. average: $10.94 per month here versus $13.42 nationally.
What does electricity cost in Washington right now?
Washington residents pay an average of 15¢ per kWh as of May 2026 — the 16th cheapest rate of the 51 U.S. jurisdictions we track.