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Cost to run a space heater in Hawaii
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$0.71/hour
Space Heater at 1,500 W in Hawaii (47.18¢/kWh) · $129.08/month at 6 h/day
By hours of use
| Use | Per day | Per month | Per year |
|---|---|---|---|
| 1 h/day | $0.71 | $21.51 | $258.31 |
| 2 h/day | $1.42 | $43.03 | $516.62 |
| 4 h/day | $2.83 | $86.06 | $1,033.24 |
| 6 h/day | $4.25 | $129.08 | $1,549.86 |
| 8 h/day | $5.66 | $172.11 | $2,066.48 |
| 12 h/day | $8.49 | $258.17 | $3,099.73 |
| 24 h/day | $16.98 | $516.34 | $6,199.45 |
Most portable space heaters are capped at 1,500 W on high; low settings are often 750-900 W. With a thermostat they cycle, so real use is usually lower.
Same appliance, nearby states
| State | ¢/kWh | Per month |
|---|---|---|
| Hawaii | 47.18 | $129.08 |
| California | 29.75 | $81.40 |
| Massachusetts | 30.48 | $83.39 |
| Maine | 32.11 | $87.85 |
FAQ
How much does it cost to run a space heater in Hawaii?
At 1,500 W and 47.18¢/kWh: $0.71 per hour, $4.25 per day and $129.08 per month at 6 h/day.
How does Hawaii compare with other states?
The same use costs $34.80/month in Nevada (cheapest) and $129.08/month in Hawaii (most expensive); the US average is $49.69.
Price: EIA Electric Power Monthly, Table 5.6.A (residential, August 2026 preliminary; released October 23, 2026).
Space Heater cost calculator · Electricity cost in Hawaii
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