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Cost to run a space heater in California
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$0.45/hour
Space Heater at 1,500 W in California (29.75¢/kWh) · $81.40/month at 6 h/day
By hours of use
| Use | Per day | Per month | Per year |
|---|---|---|---|
| 1 h/day | $0.45 | $13.57 | $162.88 |
| 2 h/day | $0.89 | $27.13 | $325.76 |
| 4 h/day | $1.78 | $54.26 | $651.52 |
| 6 h/day | $2.68 | $81.40 | $977.29 |
| 8 h/day | $3.57 | $108.53 | $1,303.05 |
| 12 h/day | $5.36 | $162.79 | $1,954.58 |
| 24 h/day | $10.71 | $325.58 | $3,909.15 |
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 |
|---|---|---|
| California | 29.75 | $81.40 |
| Rhode Island | 28.18 | $77.10 |
| New York | 28.65 | $78.39 |
| Alaska | 29.41 | $80.47 |
| Massachusetts | 30.48 | $83.39 |
| Maine | 32.11 | $87.85 |
| Hawaii | 47.18 | $129.08 |
FAQ
How much does it cost to run a space heater in California?
At 1,500 W and 29.75¢/kWh: $0.45 per hour, $2.68 per day and $81.40 per month at 6 h/day.
How does California 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 California
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