How much does a smart speaker cost per month in South Dakota?

About 33.2¢ a month, assuming 3 W, 24 hours a day, 365 days a year at 15.15¢/kWh.

How many kilowatt-hours does a smart speaker use?

Roughly 26 kWh a year under these assumptions, or 0.00 kWh for every hour it runs.

Is that expensive compared with other states?

South Dakota has the 17th cheapest average residential rate in the country, so this appliance costs less here than the U.S. average of $4.77 a year.

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Cost to run a smart speaker in South Dakota (August 2026 rates)

At 15.15¢ per kilowatt-hour — South Dakota's average residential price in August 2026 — running a smart speaker costs $3.98 a year. That is 17% less than the national average of $4.77. South Dakota's residential rate is up 9.0% from August 2025, which moves this appliance from $3.65 to $3.98 a year.

Per hour: under 0.1¢
Per day of use: 1.1¢
Per month: 33.2¢
Per year: $3.98

Assumption: 3 W, 24 hours a day, 365 days a year — 26 kWh a year. Idle listening. Playing music at volume draws several times more, but only while it plays. Use the calculator to swap in the numbers from your own model.

How South Dakota compares

South Dakota pays 15.15¢/kWh, the 17th cheapest residential electricity of the 51 U.S. jurisdictions EIA reports. For this appliance that works out to 79.1¢ less a year than the typical U.S. household pays for the same use. Running the same smart speaker costs $3.34 a year in Nevada and $12.40 in Hawaii, so where you live changes this bill by $9.06 a year.

State	Rate	Per month	Per year
Florida	14.99¢	32.8¢	$3.94
Arizona	15.05¢	33.0¢	$3.96
South Dakota	15.15¢	33.2¢	$3.98
Kansas	15.47¢	33.9¢	$4.07
Montana	15.57¢	34.1¢	$4.09

States ranked by average residential price, cheapest first. See all 51 states for a smart speaker.

What else costs about the same in South Dakota

Toaster$5.31 a year in SD Vacuum cleaner$5.45 a year in SD Clothes iron$2.50 a year in SD

Cutting the number down

The interesting number is the idle draw, because that is the one that runs 8,760 hours a year.

Questions

How much does a smart speaker cost per month in South Dakota?: About 33.2¢ a month, assuming 3 W, 24 hours a day, 365 days a year at 15.15¢/kWh.
How many kilowatt-hours does a smart speaker use?: Roughly 26 kWh a year under these assumptions, or 0.00 kWh for every hour it runs.
Is that expensive compared with other states?: South Dakota has the 17th cheapest average residential rate in the country, so this appliance costs less here than the U.S. average of $4.77 a year.