Cost to Run a Phone Charger in Hawaii
Hawaii's average residential electricity rate is 48¢/kWh as of July 2026 — the 51st cheapest in the country, 162% above the U.S. average. At typical usage (3 hours/day), a phone charger here costs $0.26 per month.
Per hour
0.3¢
at 4–20 W
Per day
0.9¢
3 hours/day
Per month
$0.26
0.5 kWh
Per year
$3.15
6.6 kWh
By usage level in Hawaii
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (1.5 hrs/day) | 0.4¢ | $0.13 | $1.58 |
| Typical (3 hrs/day) | 0.9¢ | $0.26 | $3.15 |
| Heavy (6 hrs/day) | 1.7¢ | $0.53 | $6.31 |
Hawaii vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a phone charger in Hawaii?
At Hawaii's current average residential rate of 48¢/kWh (July 2026), a phone charger with typical usage costs about 0.9¢ per day, $0.26 per month, or $3.15 per year.
Is running a phone charger in Hawaii more expensive than average?
Yes. Hawaii's electricity costs about 162% more than the U.S. average, so the same usage costs $0.26 per month here versus $0.10 nationally.
What does electricity cost in Hawaii right now?
Hawaii residents pay an average of 48¢ per kWh as of July 2026 — the 51st cheapest rate of the 51 U.S. jurisdictions we track.