Cost to Run a Grow Light in Maryland
Maryland's average residential electricity rate is 21.4¢/kWh as of July 2026 — the 37th cheapest in the country, 17% above the U.S. average. At typical usage (14 hours/day), a grow light here costs $27.32 per month.
Per hour
6.4¢
at 100–650 W
Per day
$0.90
14 hours/day
Per month
$27.32
128 kWh
Per year
$328
1,533 kWh
By usage level in Maryland
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (7 hrs/day) | $0.45 | $13.66 | $164 |
| Typical (14 hrs/day) | $0.90 | $27.32 | $328 |
| Heavy (24 hrs/day) | $1.80 | $54.65 | $656 |
Maryland vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a grow light in Maryland?
At Maryland's current average residential rate of 21.4¢/kWh (July 2026), a grow light with typical usage costs about $0.90 per day, $27.32 per month, or $328 per year.
Is running a grow light in Maryland more expensive than average?
Yes. Maryland's electricity costs about 17% more than the U.S. average, so the same usage costs $27.32 per month here versus $23.37 nationally.
What does electricity cost in Maryland right now?
Maryland residents pay an average of 21.4¢ per kWh as of July 2026 — the 37th cheapest rate of the 51 U.S. jurisdictions we track.