A mini fridge typically draws about 80 watts while running (roughly 50-120 W) and uses about 0.75 kWh a day. Its compressor surges to a few hundred watts for a moment at startup.
- Running watts
- 80 WTypical; 50–120 W across models
- Starting watts
- 400 WSmall compressor; brief surge lasting under a second, roughly 3-5…
- Per day
- 0.75 kWh24 h of use, cycling
- Current
- 0.7 AAt 120 V while running
Figures checked against DOE, ENERGY STAR and manufacturer data on . Your model's label is the final word.
Watts by model and setting
Most mini fridge models draw between 50 and 120 W while running; a typical one draws about 80 W. ENERGY STAR certified 3.1 cu ft compact models are rated about 270 kWh/yr (0.74 kWh/day); 80 W x 24 h x 0.4 is about 0.77 kWh/day. Older or non-certified units can use 1 kWh/day or more.
- Size: 1.7 cu ft cubes use less than 3-4 cu ft models with a freezer compartment
- ENERGY STAR models use at least 10% less than the federal minimum
- Thermoelectric (no compressor) coolers draw a steady 40-70 W and cool poorly in warm rooms
- Ambient temperature and ventilation around the coils
Running a mini fridge on a generator or power station
- Generator: at least 80 running watts and 480 starting watts (running plus the 400 W start surge, the cautious way to size it). Check both numbers on the spec sheet. A generator rated 1,000 W or more covers it with room to spare.
- Power station: continuous output of at least 80 W and a surge rating that covers about 400 W. Pure sine wave output is the safe choice for motors and electronics.
| Power station capacity | Estimated runtime |
|---|---|
| 500 Wh | 13.3 h |
| 1,000 Wh | 26.6 h |
| 2,000 Wh | 53.1 h |
| 3,000 Wh | 79.7 h |
Based on 32 W average draw (running watts × duty cycle) and 85% usable capacity.
- Small enough for most portable power stations of 500 Wh or more; check the surge rating covers the compressor start
- Use pure sine wave output for compressor motors
- A 1 kWh power station can typically keep a compact fridge running for more than a day
- Run a gas generator outdoors only, at least 20 feet from doors, windows and vents; carbon monoxide from generators kills. Connect appliances with heavy-duty extension cords or a professionally installed transfer switch, never by backfeeding.
Add it to the generator calculator
Questions people ask
Can a mini fridge run on a portable power station?
Yes. A typical compact fridge uses under 1 kWh a day, so a 1,000 Wh power station can run one for roughly a day or more, provided its surge rating handles the start.
Does a mini fridge use a lot of electricity?
Not much: about 270 kWh a year for an ENERGY STAR 3.1 cu ft model, though per cubic foot it is less efficient than a full-size fridge.