Cost to Run a Grow Light in South Dakota
South Dakota's average residential electricity rate is 15.4¢/kWh as of July 2026 — the 19th cheapest in the country, 16% below the U.S. average. At typical usage (14 hours/day), a grow light here costs $19.66 per month.
Per hour
4.6¢
at 100–650 W
Per day
$0.65
14 hours/day
Per month
$19.66
128 kWh
Per year
$236
1,533 kWh
By usage level in South Dakota
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (7 hrs/day) | $0.32 | $9.83 | $118 |
| Typical (14 hrs/day) | $0.65 | $19.66 | $236 |
| Heavy (24 hrs/day) | $1.29 | $39.33 | $472 |
South Dakota 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 South Dakota?
At South Dakota's current average residential rate of 15.4¢/kWh (July 2026), a grow light with typical usage costs about $0.65 per day, $19.66 per month, or $236 per year.
Is running a grow light in South Dakota more expensive than average?
No — it's cheaper. South Dakota's rate is about 16% below the U.S. average: $19.66 per month here versus $23.37 nationally.
What does electricity cost in South Dakota right now?
South Dakota residents pay an average of 15.4¢ per kWh as of July 2026 — the 19th cheapest rate of the 51 U.S. jurisdictions we track.