Cost to Run a Incandescent Bulb in Delaware
Delaware's average residential electricity rate is 18.8¢/kWh as of April 2026 — the 33rd cheapest in the country, 0% above the U.S. average. At typical usage (5 hours/day), a incandescent bulb here costs $1.71 per month.
Per hour
1.1¢
at 40–100 W
Per day
5.6¢
5 hours/day
Per month
$1.71
9.1 kWh
Per year
$20.59
110 kWh
By usage level in Delaware
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (2.5 hrs/day) | 2.8¢ | $0.86 | $10.29 |
| Typical (5 hrs/day) | 5.6¢ | $1.71 | $20.59 |
| Heavy (10 hrs/day) | $0.11 | $3.43 | $41.17 |
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 18.8¢/kWh (April 2026), a incandescent bulb with typical usage costs about 5.6¢ per day, $1.71 per month, or $20.59 per year.
Is running a incandescent bulb in Delaware more expensive than average?
It's almost exactly the U.S. average: $1.71 per month here versus $1.71 nationally.
What does electricity cost in Delaware right now?
Delaware residents pay an average of 18.8¢ per kWh as of April 2026 — the 33rd cheapest rate of the 51 U.S. jurisdictions we track.