Cost to Run a Tankless Electric Water Heater in Louisiana
Louisiana's average residential electricity rate is 12.7¢/kWh as of July 2026 — the 1st cheapest in the country, 31% below the U.S. average. At typical usage (0.7 hours/day), a tankless electric water heater here costs $48.65 per month.
Per hour
$2.29
at 13,000–27,000 W
Per day
$1.60
0.7 hours/day
Per month
$48.65
383 kWh
Per year
$584
4,599 kWh
By usage level in Louisiana
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (0.5 hrs/day) | $0.80 | $24.32 | $292 |
| Typical (0.7 hrs/day) | $1.60 | $48.65 | $584 |
| Heavy (1.4 hrs/day) | $3.20 | $97.29 | $1,168 |
Louisiana 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 Louisiana?
At Louisiana's current average residential rate of 12.7¢/kWh (July 2026), a tankless electric water heater with typical usage costs about $1.60 per day, $48.65 per month, or $584 per year.
Is running a tankless electric water heater in Louisiana more expensive than average?
No — it's cheaper. Louisiana's rate is about 31% below the U.S. average: $48.65 per month here versus $70.10 nationally.
What does electricity cost in Louisiana right now?
Louisiana residents pay an average of 12.7¢ per kWh as of July 2026 — the 1st cheapest rate of the 51 U.S. jurisdictions we track.