Cost to Run a Aquarium in California
California's average residential electricity rate is 33.6¢/kWh as of July 2026 — the 50th cheapest in the country, 84% above the U.S. average. At typical usage (24 hours/day (always on)), a aquarium here costs $24.51 per month.
Per hour
3.4¢
at 50–300 W
Per day
$0.81
24 hours/day (always on)
Per month
$24.51
73 kWh
Per year
$294
876 kWh
By usage level in California
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (12 hrs/day) | $0.40 | $12.26 | $147 |
| Typical (24 hrs/day) | $0.81 | $24.51 | $294 |
| Heavy (24 hrs/day) | $1.61 | $49.03 | $589 |
California vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a aquarium in California?
At California's current average residential rate of 33.6¢/kWh (July 2026), a aquarium with typical usage costs about $0.81 per day, $24.51 per month, or $294 per year.
Is running a aquarium in California more expensive than average?
Yes. California's electricity costs about 84% more than the U.S. average, so the same usage costs $24.51 per month here versus $13.35 nationally.
What does electricity cost in California right now?
California residents pay an average of 33.6¢ per kWh as of July 2026 — the 50th cheapest rate of the 51 U.S. jurisdictions we track.