Cost to Run a Aquarium in Illinois
Illinois's average residential electricity rate is 23.9¢/kWh as of May 2026 — the 40th cheapest in the country, 30% above the U.S. average. At typical usage (24 hours/day (always on)), a aquarium here costs $17.44 per month.
Per hour
2.4¢
at 50–300 W
Per day
$0.57
24 hours/day (always on)
Per month
$17.44
73 kWh
Per year
$209
876 kWh
By usage level in Illinois
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (12 hrs/day) | $0.29 | $8.72 | $105 |
| Typical (24 hrs/day) | $0.57 | $17.44 | $209 |
| Heavy (24 hrs/day) | $1.15 | $34.87 | $419 |
Illinois vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a aquarium in Illinois?
At Illinois's current average residential rate of 23.9¢/kWh (May 2026), a aquarium with typical usage costs about $0.57 per day, $17.44 per month, or $209 per year.
Is running a aquarium in Illinois more expensive than average?
Yes. Illinois's electricity costs about 30% more than the U.S. average, so the same usage costs $17.44 per month here versus $13.42 nationally.
What does electricity cost in Illinois right now?
Illinois residents pay an average of 23.9¢ per kWh as of May 2026 — the 40th cheapest rate of the 51 U.S. jurisdictions we track.