Electricity cost in Hawaii
Short answer
Electricity in Hawaii averages about 42¢/kWh. At that rate, running central AC costs about $268/month — above the U.S. average of 16.8¢.
Avg rate
42¢/kWh
| Appliance | Cost / month in Hawaii |
|---|---|
| Central air conditioner | $268 |
| Electric water heater | $153 |
| Refrigerator | $15 |
| Space heater | $96 |
| Electric clothes dryer | $38 |
| EV charger (Level 2) | $276 |
Any appliance
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Frequently asked questions
What is the average electricity rate in Hawaii?
About 42¢/kWh for residential customers — versus the U.S. average of 16.8¢. Your exact rate depends on your utility and plan.
How much does an electric water heater cost to run in Hawaii?
About $153 per month at Hawaii's 42¢/kWh rate, assuming typical use. Heat-pump water heaters cost far less.
How much does a space heater cost to run in Hawaii?
Around $96 per month if run ~5 hours a day at 42¢/kWh. Space heaters are cheap to buy but expensive to run.