Cost to Run a Tankless Electric Water Heater in Pennsylvania
Pennsylvania's average residential electricity rate is 21.7¢/kWh as of July 2026 — the 38th cheapest in the country, 19% above the U.S. average. At typical usage (0.7 hours/day), a tankless electric water heater here costs $83.12 per month.
Per hour
$3.91
at 13,000–27,000 W
Per day
$2.73
0.7 hours/day
Per month
$83.12
383 kWh
Per year
$998
4,599 kWh
By usage level in Pennsylvania
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (0.5 hrs/day) | $1.37 | $41.56 | $499 |
| Typical (0.7 hrs/day) | $2.73 | $83.12 | $998 |
| Heavy (1.4 hrs/day) | $5.47 | $166 | $1,996 |
Pennsylvania 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 Pennsylvania?
At Pennsylvania's current average residential rate of 21.7¢/kWh (July 2026), a tankless electric water heater with typical usage costs about $2.73 per day, $83.12 per month, or $998 per year.
Is running a tankless electric water heater in Pennsylvania more expensive than average?
Yes. Pennsylvania's electricity costs about 19% more than the U.S. average, so the same usage costs $83.12 per month here versus $70.10 nationally.
What does electricity cost in Pennsylvania right now?
Pennsylvania residents pay an average of 21.7¢ per kWh as of July 2026 — the 38th cheapest rate of the 51 U.S. jurisdictions we track.