Cost to Run a Grow Light 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 (14 hours/day), a grow light here costs $27.83 per month.
Per hour
6.5¢
at 100–650 W
Per day
$0.92
14 hours/day
Per month
$27.83
128 kWh
Per year
$334
1,533 kWh
By usage level in Maryland
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (7 hrs/day) | $0.46 | $13.92 | $167 |
| Typical (14 hrs/day) | $0.92 | $27.83 | $334 |
| Heavy (24 hrs/day) | $1.83 | $55.67 | $668 |
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 21.8¢/kWh (May 2026), a grow light with typical usage costs about $0.92 per day, $27.83 per month, or $334 per year.
Is running a grow light in Maryland more expensive than average?
Yes. Maryland's electricity costs about 18% more than the U.S. average, so the same usage costs $27.83 per month here versus $23.49 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.