Cost to Run a LED Light Bulb 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 (5 hours/day), a led light bulb here costs $0.28 per month.
Per hour
0.2¢
at 5–15 W
Per day
0.9¢
5 hours/day
Per month
$0.28
1.4 kWh
Per year
$3.37
16 kWh
By usage level in Illinois
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (2.5 hrs/day) | 0.5¢ | $0.14 | $1.68 |
| Typical (5 hrs/day) | 0.9¢ | $0.28 | $3.37 |
| Heavy (10 hrs/day) | 1.8¢ | $0.56 | $6.73 |
Illinois vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a led light bulb in Illinois?
At Illinois's current average residential rate of 20.5¢/kWh (April 2026), a led light bulb with typical usage costs about 0.9¢ per day, $0.28 per month, or $3.37 per year.
Is running a led light bulb in Illinois more expensive than average?
Yes. Illinois's electricity costs about 9% more than the U.S. average, so the same usage costs $0.28 per month here versus $0.26 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.