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

About $51.06 a month, assuming 2,500 kWh a year at 24.51¢/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?

Connecticut has the 11th most expensive average residential rate in the country, so this appliance costs more here than the U.S. average of $454 a year.

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Cost to run a hot tub in Connecticut (August 2026 rates)

At 24.51¢ per kilowatt-hour — Connecticut's average residential price in August 2026 — running a hot tub costs $613 a year. That is 35% more than the national average of $454. Connecticut's residential rate is down 18.8% from August 2025, which moves this appliance from $754 to $613 a year.

Per day: $1.68
Per month: $51.06
Per year: $613

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 Connecticut compares

Connecticut pays 24.51¢/kWh, the 11th most expensive residential electricity of the 51 U.S. jurisdictions EIA reports. For this appliance that works out to $159 more a year than the typical U.S. household pays for the same use. Running the same hot tub costs $318 a year in Nevada and $1,180 in Hawaii, so where you live changes this bill by $862 a year.

State	Rate	Per month	Per year
Michigan	22.99¢	$47.90	$575
Vermont	23.84¢	$49.67	$596
Connecticut	24.51¢	$51.06	$613
New Jersey	24.61¢	$51.27	$615
District of Columbia	25.98¢	$54.13	$650

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

What else costs about the same in Connecticut

Central air conditioner$576 a year in CT Heat pump$529 a year in CT Pool pump$424 a year in CT

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 Connecticut?: About $51.06 a month, assuming 2,500 kWh a year at 24.51¢/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?: Connecticut has the 11th most expensive average residential rate in the country, so this appliance costs more here than the U.S. average of $454 a year.