Cost to Run a LED Light Bulb 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 (5 hours/day), a led light bulb here costs $0.33 per month.
Per hour
0.2¢
at 5–15 W
Per day
1.1¢
5 hours/day
Per month
$0.33
1.4 kWh
Per year
$3.93
16 kWh
By usage level in Illinois
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (2.5 hrs/day) | 0.5¢ | $0.16 | $1.96 |
| Typical (5 hrs/day) | 1.1¢ | $0.33 | $3.93 |
| Heavy (10 hrs/day) | 2.2¢ | $0.65 | $7.85 |
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 23.9¢/kWh (May 2026), a led light bulb with typical usage costs about 1.1¢ per day, $0.33 per month, or $3.93 per year.
Is running a led light bulb in Illinois more expensive than average?
Yes. Illinois's electricity costs about 30% more than the U.S. average, so the same usage costs $0.33 per month here versus $0.25 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.