Cost to Run a Incandescent Bulb in Delaware
Delaware's average residential electricity rate is 19.4¢/kWh as of May 2026 — the 33rd cheapest in the country, 5% above the U.S. average. At typical usage (5 hours/day), a incandescent bulb here costs $1.77 per month.
Per hour
1.2¢
at 40–100 W
Per day
5.8¢
5 hours/day
Per month
$1.77
9.1 kWh
Per year
$21.24
110 kWh
By usage level in Delaware
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (2.5 hrs/day) | 2.9¢ | $0.88 | $10.62 |
| Typical (5 hrs/day) | 5.8¢ | $1.77 | $21.24 |
| Heavy (10 hrs/day) | $0.12 | $3.54 | $42.49 |
Delaware vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a incandescent bulb in Delaware?
At Delaware's current average residential rate of 19.4¢/kWh (May 2026), a incandescent bulb with typical usage costs about 5.8¢ per day, $1.77 per month, or $21.24 per year.
Is running a incandescent bulb in Delaware more expensive than average?
Yes. Delaware's electricity costs about 5% more than the U.S. average, so the same usage costs $1.77 per month here versus $1.68 nationally.
What does electricity cost in Delaware right now?
Delaware residents pay an average of 19.4¢ per kWh as of May 2026 — the 33rd cheapest rate of the 51 U.S. jurisdictions we track.