Cost to Run a Electric Water Heater in California
California's average residential electricity rate is 35.3¢/kWh as of April 2026 — the 50th cheapest in the country, 88% above the U.S. average. At typical usage (2.9 hours/day), a electric water heater here costs $140 per month.
Per hour
$1.59
at 3,500–5,500 W
Per day
$4.61
2.9 hours/day
Per month
$140
397 kWh
Per year
$1,681
4,763 kWh
By usage level in California
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (1.45 hrs/day) | $2.30 | $70.02 | $841 |
| Typical (2.9 hrs/day) | $4.61 | $140 | $1,681 |
| Heavy (5.8 hrs/day) | $9.21 | $280 | $3,363 |
California 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 California?
At California's current average residential rate of 35.3¢/kWh (April 2026), a electric water heater with typical usage costs about $4.61 per day, $140 per month, or $1,681 per year.
Is running a electric water heater in California more expensive than average?
Yes. California's electricity costs about 88% more than the U.S. average, so the same usage costs $140 per month here versus $74.58 nationally.
What does electricity cost in California right now?
California residents pay an average of 35.3¢ per kWh as of April 2026 — the 50th cheapest rate of the 51 U.S. jurisdictions we track.