What does a mini fridge cost to run?

Run the numbers on your own use

Change any of these and the figures update. The defaults are the typical case described above; your rate is the input that moves the answer most.

Why this is lower than the number you will see elsewhere

Almost every published answer to this question multiplies the rating on the label by the hours the appliance is switched on. For a mini fridge that gives 657 kWh a year, or $120.

Higher than a full-size fridge: less insulation, a smaller thermal mass to coast on, and often a warmer room.

The arithmetic, step by step

Nothing here is hidden, so you can check it or change it. Working in the order the formula runs:

1. 75 W — what it draws while it is actually drawing. This is the rating on the plate.
2. × 40% — the share of its in-service time it is really pulling that. Higher than a full-size fridge: less insulation, a smaller thermal mass to coast on, and often a warmer room.
   That gives 30 W averaged across the hours it is on.
3. × 24 hours a day × 365 days — A compact fridge in a bedroom, office or dorm.
   30 × 24 × 365 ÷ 1,000 = 263 kWh a year.
4. × 18.34¢ — the US average residential rate for June 2026.
   263 kWh × 18.34¢ = $48 a year.

Change any assumption in the calculator above and every figure on this page moves with it. The two that matter most are your rate, which varies 4× across the country, and the hours — the duty cycle is a property of the appliance, but the hours are a property of you.

How sensitive is that number?

A single figure invites more confidence than it deserves. Here is the same appliance under assumptions either side of the default, so you can see how much of the answer is the appliance and how much is the guess about how you use it.

Everything else held at the default. The spread here is the honest error bar on the headline figure.

What it costs per hour, day and month

At 18.34¢ per kWh, the US residential average for June 2026.

The thing worth knowing

Per cubic foot of storage a mini fridge is markedly worse than a full-size one, because insulation thickness does not shrink with the cabinet and the door is opened just as often. Two mini fridges frequently cost more to run than one full-size unit that holds four times as much. Thermoelectric models with no compressor are worse again — they draw steadily rather than cycling, and cannot hold temperature in a warm room.

Against refrigerator

Consolidate into the main refrigerator if there is space. If the mini fridge exists to save walking to the kitchen, that convenience currently costs about the price of a coffee a week. In numbers: a mini fridge costs $48 a year on these assumptions, and refrigerator doing a comparable job costs $77 — a difference of $29 a year, or $289 over ten years at today’s rate.

Both at 18.34¢/kWh, each on its own standard usage assumption. Ten years is roughly the service life of either.

What it costs in your state

The appliance is the same everywhere; the rate is not. Running this mini fridge costs $139 a year in Hawaii and $34 in Nevada — a difference of 4×.

Cost of running one mini fridge for a year, by state. Residential average price, EIA June 2026.

Other kitchen costs

• Standalone ice maker

  $253 a year

  An undercounter unit kept switched on year round.

• Wine cellar cooling unit

  $239 a year

  A through-wall unit holding a small purpose-built cellar at 55°F.

• Garage refrigerator

  $130 a year

  An older second fridge in an unconditioned garage.

• Refrigerator

  $77 a year

  A modern 20 cu ft top-freezer, kitchen at normal room temperature.

• Kegerator

  $64 a year

  A single-tap unit kept at serving temperature year round.

• Chest freezer

  $63 a year

  A 15 cu ft chest freezer in a garage.

Questions

Source: U.S. Energy Information Administration, Electric Power Monthly, Table 5.6.A, June 2026. U.S. Government work, public domain.

How every figure on this page is computed · Where the data comes from