Cost to Run a Reptile Heat Lamp / Terrarium in Illinois
Illinois's average residential electricity rate is 20.5¢/kWh as of April 2026 — the 36th cheapest in the country, 9% above the U.S. average. At typical usage (12 hours/day), a reptile heat lamp / terrarium here costs $7.48 per month.
Per hour
2.1¢
at 50–250 W
Per day
$0.25
12 hours/day
Per month
$7.48
36 kWh
Per year
$89.79
438 kWh
By usage level in Illinois
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (6 hrs/day) | $0.12 | $3.74 | $44.89 |
| Typical (12 hrs/day) | $0.25 | $7.48 | $89.79 |
| Heavy (24 hrs/day) | $0.49 | $14.96 | $180 |
Illinois vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a reptile heat lamp / terrarium in Illinois?
At Illinois's current average residential rate of 20.5¢/kWh (April 2026), a reptile heat lamp / terrarium with typical usage costs about $0.25 per day, $7.48 per month, or $89.79 per year.
Is running a reptile heat lamp / terrarium in Illinois more expensive than average?
Yes. Illinois's electricity costs about 9% more than the U.S. average, so the same usage costs $7.48 per month here versus $6.86 nationally.
What does electricity cost in Illinois right now?
Illinois residents pay an average of 20.5¢ per kWh as of April 2026 — the 36th cheapest rate of the 51 U.S. jurisdictions we track.