Cost to Run a Incandescent Bulb in Arizona
Arizona's average residential electricity rate is 15.5¢/kWh as of April 2026 — the 20th cheapest in the country, 18% below the U.S. average. At typical usage (5 hours/day), a incandescent bulb here costs $1.41 per month.
Per hour
0.9¢
at 40–100 W
Per day
4.7¢
5 hours/day
Per month
$1.41
9.1 kWh
Per year
$16.97
110 kWh
By usage level in Arizona
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (2.5 hrs/day) | 2.3¢ | $0.71 | $8.49 |
| Typical (5 hrs/day) | 4.7¢ | $1.41 | $16.97 |
| Heavy (10 hrs/day) | 9.3¢ | $2.83 | $33.95 |
Arizona 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 Arizona?
At Arizona's current average residential rate of 15.5¢/kWh (April 2026), a incandescent bulb with typical usage costs about 4.7¢ per day, $1.41 per month, or $16.97 per year.
Is running a incandescent bulb in Arizona more expensive than average?
No — it's cheaper. Arizona's rate is about 18% below the U.S. average: $1.41 per month here versus $1.71 nationally.
What does electricity cost in Arizona right now?
Arizona residents pay an average of 15.5¢ per kWh as of April 2026 — the 20th cheapest rate of the 51 U.S. jurisdictions we track.