Cost to Run a Tankless Electric Water Heater in Connecticut
Connecticut's average residential electricity rate is 27.4¢/kWh as of May 2026 — the 44th cheapest in the country, 49% above the U.S. average. At typical usage (0.7 hours/day), a tankless electric water heater here costs $105 per month.
Per hour
$4.93
at 13,000–27,000 W
Per day
$3.45
0.7 hours/day
Per month
$105
383 kWh
Per year
$1,260
4,599 kWh
By usage level in Connecticut
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (0.5 hrs/day) | $1.73 | $52.48 | $630 |
| Typical (0.7 hrs/day) | $3.45 | $105 | $1,260 |
| Heavy (1.4 hrs/day) | $6.90 | $210 | $2,520 |
Connecticut 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 Connecticut?
At Connecticut's current average residential rate of 27.4¢/kWh (May 2026), a tankless electric water heater with typical usage costs about $3.45 per day, $105 per month, or $1,260 per year.
Is running a tankless electric water heater in Connecticut more expensive than average?
Yes. Connecticut's electricity costs about 49% more than the U.S. average, so the same usage costs $105 per month here versus $70.48 nationally.
What does electricity cost in Connecticut right now?
Connecticut residents pay an average of 27.4¢ per kWh as of May 2026 — the 44th cheapest rate of the 51 U.S. jurisdictions we track.