Cost to Run a Window Air Conditioner 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 (8 hours/day), a window air conditioner here costs $33.71 per month.
Per hour
$0.14
at 500–1,500 W
Per day
$1.11
8 hours/day
Per month
$33.71
219 kWh
Per year
$405
2,628 kWh
By usage level in South Dakota
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (4 hrs/day) | $0.55 | $16.85 | $202 |
| Typical (8 hrs/day) | $1.11 | $33.71 | $405 |
| Heavy (16 hrs/day) | $2.22 | $67.42 | $809 |
South Dakota vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a window air conditioner in South Dakota?
At South Dakota's current average residential rate of 15.4¢/kWh (July 2026), a window air conditioner with typical usage costs about $1.11 per day, $33.71 per month, or $405 per year.
Is running a window air conditioner in South Dakota more expensive than average?
No — it's cheaper. South Dakota's rate is about 16% below the U.S. average: $33.71 per month here versus $40.06 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.