Cost to Run a Window Air Conditioner in South Dakota
South Dakota's average residential electricity rate is 14.5¢/kWh as of April 2026 — the 13th cheapest in the country, 23% below the U.S. average. At typical usage (8 hours/day), a window air conditioner here costs $31.74 per month.
Per hour
$0.13
at 500–1,500 W
Per day
$1.04
8 hours/day
Per month
$31.74
219 kWh
Per year
$381
2,628 kWh
By usage level in South Dakota
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (4 hrs/day) | $0.52 | $15.87 | $191 |
| Typical (8 hrs/day) | $1.04 | $31.74 | $381 |
| Heavy (16 hrs/day) | $2.09 | $63.48 | $762 |
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 14.5¢/kWh (April 2026), a window air conditioner with typical usage costs about $1.04 per day, $31.74 per month, or $381 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 23% below the U.S. average: $31.74 per month here versus $41.15 nationally.
What does electricity cost in South Dakota right now?
South Dakota residents pay an average of 14.5¢ per kWh as of April 2026 — the 13th cheapest rate of the 51 U.S. jurisdictions we track.