Cost to Run a Tankless Electric Water Heater in Pennsylvania
Pennsylvania's average residential electricity rate is 21.5¢/kWh as of April 2026 — the 38th cheapest in the country, 14% above the U.S. average. At typical usage (0.7 hours/day), a tankless electric water heater here costs $82.35 per month.
Per hour
$3.87
at 13,000–27,000 W
Per day
$2.71
0.7 hours/day
Per month
$82.35
383 kWh
Per year
$989
4,599 kWh
By usage level in Pennsylvania
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (0.5 hrs/day) | $1.35 | $41.18 | $494 |
| Typical (0.7 hrs/day) | $2.71 | $82.35 | $989 |
| Heavy (1.4 hrs/day) | $5.42 | $165 | $1,978 |
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 21.5¢/kWh (April 2026), a tankless electric water heater with typical usage costs about $2.71 per day, $82.35 per month, or $989 per year.
Is running a tankless electric water heater in Pennsylvania more expensive than average?
Yes. Pennsylvania's electricity costs about 14% more than the U.S. average, so the same usage costs $82.35 per month here versus $72.01 nationally.
What does electricity cost in Pennsylvania right now?
Pennsylvania residents pay an average of 21.5¢ per kWh as of April 2026 — the 38th cheapest rate of the 51 U.S. jurisdictions we track.