Cost to Run a Electric Water Heater 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 (2.9 hours/day), a electric water heater here costs $190 per month.
Per hour
$2.16
at 3,500–5,500 W
Per day
$6.26
2.9 hours/day
Per month
$190
397 kWh
Per year
$2,286
4,763 kWh
By usage level in Hawaii
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (1.45 hrs/day) | $3.13 | $95.21 | $1,143 |
| Typical (2.9 hrs/day) | $6.26 | $190 | $2,286 |
| Heavy (5.8 hrs/day) | $12.53 | $381 | $4,573 |
Hawaii vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a electric water heater in Hawaii?
At Hawaii's current average residential rate of 48¢/kWh (July 2026), a electric water heater with typical usage costs about $6.26 per day, $190 per month, or $2,286 per year.
Is running a electric water heater in Hawaii more expensive than average?
Yes. Hawaii's electricity costs about 162% more than the U.S. average, so the same usage costs $190 per month here versus $72.60 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.