Cost to Run a Tankless Electric Water Heater in Texas
Texas's average residential electricity rate is 16.4¢/kWh as of May 2026 — the 27th cheapest in the country, 11% below the U.S. average. At typical usage (0.7 hours/day), a tankless electric water heater here costs $62.82 per month.
Per hour
$2.95
at 13,000–27,000 W
Per day
$2.07
0.7 hours/day
Per month
$62.82
383 kWh
Per year
$754
4,599 kWh
By usage level in Texas
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (0.5 hrs/day) | $1.03 | $31.41 | $377 |
| Typical (0.7 hrs/day) | $2.07 | $62.82 | $754 |
| Heavy (1.4 hrs/day) | $4.13 | $126 | $1,508 |
Texas 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 Texas?
At Texas's current average residential rate of 16.4¢/kWh (May 2026), a tankless electric water heater with typical usage costs about $2.07 per day, $62.82 per month, or $754 per year.
Is running a tankless electric water heater in Texas more expensive than average?
No — it's cheaper. Texas's rate is about 11% below the U.S. average: $62.82 per month here versus $70.48 nationally.
What does electricity cost in Texas right now?
Texas residents pay an average of 16.4¢ per kWh as of May 2026 — the 27th cheapest rate of the 51 U.S. jurisdictions we track.