Cost to Run a Tankless Electric Water Heater in Pennsylvania
Pennsylvania's average residential electricity rate is 21.6¢/kWh as of May 2026 — the 36th cheapest in the country, 17% above the U.S. average. At typical usage (0.7 hours/day), a tankless electric water heater here costs $82.74 per month.
Per hour
$3.89
at 13,000–27,000 W
Per day
$2.72
0.7 hours/day
Per month
$82.74
383 kWh
Per year
$993
4,599 kWh
By usage level in Pennsylvania
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (0.5 hrs/day) | $1.36 | $41.37 | $497 |
| Typical (0.7 hrs/day) | $2.72 | $82.74 | $993 |
| Heavy (1.4 hrs/day) | $5.44 | $165 | $1,987 |
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 21.6¢/kWh (May 2026), a tankless electric water heater with typical usage costs about $2.72 per day, $82.74 per month, or $993 per year.
Is running a tankless electric water heater in Pennsylvania more expensive than average?
Yes. Pennsylvania's electricity costs about 17% more than the U.S. average, so the same usage costs $82.74 per month here versus $70.48 nationally.
What does electricity cost in Pennsylvania right now?
Pennsylvania residents pay an average of 21.6¢ per kWh as of May 2026 — the 36th cheapest rate of the 51 U.S. jurisdictions we track.