Cost to Run a Tankless Electric Water Heater in Washington, D.C.
Washington, D.C.'s average residential electricity rate is 25.4¢/kWh as of April 2026 — the 42nd cheapest in the country, 35% above the U.S. average. At typical usage (0.7 hours/day), a tankless electric water heater here costs $97.29 per month.
Per hour
$4.57
at 13,000–27,000 W
Per day
$3.20
0.7 hours/day
Per month
$97.29
383 kWh
Per year
$1,168
4,599 kWh
By usage level in Washington, D.C.
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (0.5 hrs/day) | $1.60 | $48.65 | $584 |
| Typical (0.7 hrs/day) | $3.20 | $97.29 | $1,168 |
| Heavy (1.4 hrs/day) | $6.40 | $195 | $2,336 |
Washington, D.C. vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a tankless electric water heater in Washington, D.C.?
At Washington, D.C.'s current average residential rate of 25.4¢/kWh (April 2026), a tankless electric water heater with typical usage costs about $3.20 per day, $97.29 per month, or $1,168 per year.
Is running a tankless electric water heater in Washington, D.C. more expensive than average?
Yes. Washington, D.C.'s electricity costs about 35% more than the U.S. average, so the same usage costs $97.29 per month here versus $72.01 nationally.
What does electricity cost in Washington, D.C. right now?
Washington, D.C. residents pay an average of 25.4¢ per kWh as of April 2026 — the 42nd cheapest rate of the 51 U.S. jurisdictions we track.