How much does a hot tub cost per month in Idaho?

About $28.60 a month, assuming 2,500 kWh a year at 13.73¢/kWh.

How many kilowatt-hours does a hot tub use?

Roughly 2,500 kWh a year under these assumptions.

Is that expensive compared with other states?

Idaho has the 6th cheapest average residential rate in the country, so this appliance costs less here than the U.S. average of $458 a year.

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Cost to run a hot tub in Idaho (July 2026 rates)

At 13.73¢ per kilowatt-hour — Idaho's average residential price in July 2026 — running a hot tub costs $343 a year. That is 25% less than the national average of $458. Idaho's residential rate is up 11.8% from July 2025, which moves this appliance from $307 to $343 a year.

Per day: 94.0¢
Per month: $28.60
Per year: $343

Assumption: 2,500 kWh a year. A well-insulated 400-gallon tub held at 100 F year-round in a moderate climate. A poorly insulated tub in a cold climate can double this. Use the calculator to swap in the numbers from your own model.

How Idaho compares

Idaho pays 13.73¢/kWh, the 6th cheapest residential electricity of the 51 U.S. jurisdictions EIA reports. For this appliance that works out to $114 less a year than the typical U.S. household pays for the same use. Running the same hot tub costs $318 a year in Louisiana and $1,200 in Hawaii, so where you live changes this bill by $882 a year.

State	Rate	Per month	Per year
North Dakota	13.41¢	$27.94	$335
Tennessee	13.71¢	$28.56	$343
Idaho	13.73¢	$28.60	$343
Nebraska	13.78¢	$28.71	$344
Kentucky	13.81¢	$28.77	$345

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

What else costs about the same in Idaho

Central air conditioner$323 a year in ID Heat pump$297 a year in ID Pool pump$237 a year in ID

Cutting the number down

A good cover is the whole ballgame. Most of the energy replaces heat lost from the surface, not heat delivered to people.
Holding temperature usually beats cooling down and reheating, because reheating a large mass of water is expensive.
A waterlogged cover has lost its insulation value and quietly doubles the standing loss.

Questions

How much does a hot tub cost per month in Idaho?: About $28.60 a month, assuming 2,500 kWh a year at 13.73¢/kWh.
How many kilowatt-hours does a hot tub use?: Roughly 2,500 kWh a year under these assumptions.
Is that expensive compared with other states?: Idaho has the 6th cheapest average residential rate in the country, so this appliance costs less here than the U.S. average of $458 a year.