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A full-size refrigerator draws roughly 100 to 250 watts while its compressor runs, but the compressor cycles on and off, so the average draw is far lower. For planning a backup, a 60W average (about 1,440Wh per day) is a sensible starting point for a modern fridge, and 90W (about 2,160Wh per day) is safer for an older fridge or a hot kitchen.

How the numbers work: wattages are typical ranges from manufacturer spec sheets and efficiency labels, so check the label on your own appliance. Runtimes are calculated, not lab-tested: usable energy = rated Wh × 0.85, divided by average watts.

⚡ Quick Answer

• Average draw: about 45-70W for many modern full-size refrigerators. Many EnergyGuide labels list roughly 400 to 600 kWh per year, which is 46 to 68W averaged over 8,760 hours. Check the yellow label on your own fridge.
• While running: 100-250W, depending on size and age.
• Startup surge: a compressor can briefly draw several times its running watts. A planning figure of 1,000-1,500W is common, but the real number is your fridge’s LRA (locked rotor amps) on its data plate, multiplied by 120 volts. Our guide to what LRA is shows where to find it.

📊 How Long Will a Battery Run a Refrigerator?

Calculated runtimes at the two planning averages. These assume the fridge is the only load and the door stays closed.

Average draw	EcoFlow DELTA 3 Plus	Jackery Explorer 1000 V2	Bluetti Elite 200 V2	EcoFlow DELTA Pro	Bluetti EB3A
Efficient / typical fridge, 60W average	14.5 h	15.2 h	29.4 h	2.1 days	3.8 h
Older fridge or hot kitchen, 90W average	9.7 h	10.1 h	19.6 h	34.0 h	2.5 h

What this means: a 1,000Wh-class unit covers roughly 10 to 15 hours of fridge time. Add solar panels and the fridge’s daily 1,440Wh to 2,160Wh becomes realistic to refill each sunny day. Our solar sizing math covers how many panel watts that takes.

🔌 Surge Is What Trips Most Backups

A battery can have plenty of watt-hours and still fail to start a fridge, because the compressor demands a short spike at startup. Compare your fridge’s surge need (LRA x 120V) against the unit’s surge rating, not just its continuous output.

• EcoFlow DELTA 3 Plus: 3,600W surge.
• Jackery Explorer 1000 V2: 3,000W surge.
• Bluetti Elite 200 V2: 2,600W continuous. Bluetti does not publish a motor surge figure we can verify, so confirm before relying on it for a large or older fridge.

See surge watts vs running watts for the full explanation.

🥶 Keep the Food Safe Longer

• Keep the doors closed. The USDA says a refrigerator keeps food safe for about 4 hours without power if the door stays shut. A full freezer holds about 48 hours (24 hours if half full).
• Use an appliance thermometer. Perishable food should stay at 40°F or below.
• Cycle the fridge only if you track temperature. Running the fridge for a while and letting it rest can save battery, but only if a thermometer shows it never goes above 40°F.
• Our food-safety timeline lists what to keep and what to throw away.

✅ Bottom Line

For a typical fridge, plan around 60-90W average and a 1,000-1,500W surge. A 1,000Wh class unit gives a half-day of fridge power, a 2,000Wh class unit gives roughly a full day, and solar panels extend that for as long as the sun shines.

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🔗 Related Guides

• Will a 1000W solar generator run a refrigerator?
• How long does food last in the fridge without power?
• What is LRA on a freezer?
• Surge watts vs running watts

❓ Frequently Asked Questions

How many watts does a refrigerator use per hour?

A modern full-size refrigerator averages roughly 45-70W once you account for the compressor cycling, which is about 1.1 to 1.6 kWh per day. While the compressor is actually running it draws roughly 100-250W.

Can a 1000W portable power station run a refrigerator?

Often yes, if its surge rating covers the fridge’s startup spike (LRA multiplied by 120V). Check the LRA on your fridge’s data plate. A 1,000Wh class unit runs a typical fridge for roughly 10 to 15 hours.

How long will a fridge stay cold with the power off?

The USDA says a closed refrigerator keeps food safe for about 4 hours, a full freezer for about 48 hours and a half-full freezer for about 24 hours.

Should I unplug the fridge when power returns?

Many guides suggest waiting a few minutes after power is restored before reconnecting large appliances, to avoid a surge when the grid stabilizes.

How do I find my refrigerator’s wattage?

Look at the data plate inside the fridge for amps and multiply by 120 volts, check the EnergyGuide label for annual kWh (divide by 365 for daily kWh), or measure it with a plug-in energy monitor.