What Size Generator to Run a Refrigerator?

Refrigerator Power: Less Than You Think

Most people are surprised to learn that a refrigerator uses very little power while running — typically 150-200W for a modern Energy Star model. The issue is the starting surge, which can be 3-5x the running wattage as the compressor kicks on.

Even with this surge, a refrigerator is one of the easiest appliances to power with a generator. A 1,500W generator can run a refrigerator AND lights AND a furnace fan. In fact, the fridge is rarely the limiting factor — it's usually the AC, sump pump, or well pump that determines generator size.

When sizing a generator that includes a refrigerator, add 800-1,200W to account for the starting surge, but don't worry about the running load (150-200W is negligible).

Top picks for this size

Power Your Fridge During an Outage

• Standard refrigerator (18-22 cu ft): 150W running, 600W starting — any generator over 1,000W works
• Side-by-side with ice maker (22-26 cu ft): 200W running, 800W starting
• Large French door (26-30 cu ft): 250W running, 1,200W starting
• Chest freezer: 100W running, 500W starting — very easy to power
• Multiple refrigerators/freezers: Add running watts, use the highest single starting surge

Frequently asked questions