Cost to Run a Tankless Electric Water Heater in Maryland
Maryland's average residential electricity rate is 21.8¢/kWh as of May 2026 — the 37th cheapest in the country, 18% above the U.S. average. At typical usage (0.7 hours/day), a tankless electric water heater here costs $83.50 per month.
Per hour
$3.92
at 13,000–27,000 W
Per day
$2.75
0.7 hours/day
Per month
$83.50
383 kWh
Per year
$1,003
4,599 kWh
By usage level in Maryland
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (0.5 hrs/day) | $1.37 | $41.75 | $501 |
| Typical (0.7 hrs/day) | $2.75 | $83.50 | $1,003 |
| Heavy (1.4 hrs/day) | $5.49 | $167 | $2,005 |
Maryland 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 Maryland?
At Maryland's current average residential rate of 21.8¢/kWh (May 2026), a tankless electric water heater with typical usage costs about $2.75 per day, $83.50 per month, or $1,003 per year.
Is running a tankless electric water heater in Maryland more expensive than average?
Yes. Maryland's electricity costs about 18% more than the U.S. average, so the same usage costs $83.50 per month here versus $70.48 nationally.
What does electricity cost in Maryland right now?
Maryland residents pay an average of 21.8¢ per kWh as of May 2026 — the 37th cheapest rate of the 51 U.S. jurisdictions we track.