Cost to Run a Tankless Electric Water Heater in Wisconsin
Wisconsin's average residential electricity rate is 19.7¢/kWh as of May 2026 — the 35th cheapest in the country, 7% above the U.S. average. At typical usage (0.7 hours/day), a tankless electric water heater here costs $75.46 per month.
Per hour
$3.55
at 13,000–27,000 W
Per day
$2.48
0.7 hours/day
Per month
$75.46
383 kWh
Per year
$906
4,599 kWh
By usage level in Wisconsin
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (0.5 hrs/day) | $1.24 | $37.73 | $453 |
| Typical (0.7 hrs/day) | $2.48 | $75.46 | $906 |
| Heavy (1.4 hrs/day) | $4.96 | $151 | $1,812 |
Wisconsin 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 Wisconsin?
At Wisconsin's current average residential rate of 19.7¢/kWh (May 2026), a tankless electric water heater with typical usage costs about $2.48 per day, $75.46 per month, or $906 per year.
Is running a tankless electric water heater in Wisconsin more expensive than average?
Yes. Wisconsin's electricity costs about 7% more than the U.S. average, so the same usage costs $75.46 per month here versus $70.48 nationally.
What does electricity cost in Wisconsin right now?
Wisconsin residents pay an average of 19.7¢ per kWh as of May 2026 — the 35th cheapest rate of the 51 U.S. jurisdictions we track.