Cost to Run a Grow Light in New Hampshire
New Hampshire's average residential electricity rate is 27.3¢/kWh as of May 2026 — the 43rd cheapest in the country, 48% above the U.S. average. At typical usage (14 hours/day), a grow light here costs $34.86 per month.
Per hour
8.2¢
at 100–650 W
Per day
$1.15
14 hours/day
Per month
$34.86
128 kWh
Per year
$419
1,533 kWh
By usage level in New Hampshire
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (7 hrs/day) | $0.57 | $17.43 | $209 |
| Typical (14 hrs/day) | $1.15 | $34.86 | $419 |
| Heavy (24 hrs/day) | $2.29 | $69.71 | $837 |
New Hampshire 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 New Hampshire?
At New Hampshire's current average residential rate of 27.3¢/kWh (May 2026), a grow light with typical usage costs about $1.15 per day, $34.86 per month, or $419 per year.
Is running a grow light in New Hampshire more expensive than average?
Yes. New Hampshire's electricity costs about 48% more than the U.S. average, so the same usage costs $34.86 per month here versus $23.49 nationally.
What does electricity cost in New Hampshire right now?
New Hampshire residents pay an average of 27.3¢ per kWh as of May 2026 — the 43rd cheapest rate of the 51 U.S. jurisdictions we track.