Cost to Run a Reptile Heat Lamp / Terrarium 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 (12 hours/day), a reptile heat lamp / terrarium here costs $8.72 per month.
Per hour
2.4¢
at 50–250 W
Per day
$0.29
12 hours/day
Per month
$8.72
36 kWh
Per year
$105
438 kWh
By usage level in Illinois
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (6 hrs/day) | $0.14 | $4.36 | $52.34 |
| Typical (12 hrs/day) | $0.29 | $8.72 | $105 |
| Heavy (24 hrs/day) | $0.57 | $17.44 | $209 |
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 23.9¢/kWh (May 2026), a reptile heat lamp / terrarium with typical usage costs about $0.29 per day, $8.72 per month, or $105 per year.
Is running a reptile heat lamp / terrarium in Illinois more expensive than average?
Yes. Illinois's electricity costs about 30% more than the U.S. average, so the same usage costs $8.72 per month here versus $6.71 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.