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Cost to run an electric water heater in Tennessee
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$0.54/hour
Electric Water Heater at 4,000 W in Tennessee (13.42¢/kWh) · $48.96/month at 3 h/day
By hours of use
| Use | Per day | Per month | Per year |
|---|---|---|---|
| 1 h/day | $0.54 | $16.32 | $195.93 |
| 2 h/day | $1.07 | $32.64 | $391.86 |
| 3 h/day | $1.61 | $48.96 | $587.80 |
| 4 h/day | $2.15 | $65.27 | $783.73 |
| 8 h/day | $4.29 | $130.55 | $1,567.46 |
| 12 h/day | $6.44 | $195.82 | $2,351.18 |
| 24 h/day | $12.88 | $391.65 | $4,702.37 |
Tank water heaters use 3,000-5,500 W elements; a family typically runs them 2-4 hours a day. Heat-pump models use about a third.
Same appliance, nearby states
FAQ
How much does it cost to run an electric water heater in Tennessee?
At 4,000 W and 13.42¢/kWh: $0.54 per hour, $1.61 per day and $48.96 per month at 3 h/day.
How does Tennessee compare with other states?
The same use costs $46.40/month in Nevada (cheapest) and $172.11/month in Hawaii (most expensive); the US average is $66.25.
Price: EIA Electric Power Monthly, Table 5.6.A (residential, August 2026 preliminary; released October 23, 2026).
Electric Water Heater cost calculator · Electricity cost in Tennessee
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