What Size Power Station Do You Need to Run a Refrigerator?
The most common power-station question, answered with real numbers. How to estimate your fridge’s draw, why surge watts matter, and how many hours each capacity tier actually buys you.
"Will this run my fridge?" is the question every first-time power-station buyer asks, and the honest answer is: it depends on two numbers, and most product pages bury both. Here's the math in plain terms.
Two numbers decide it
- Running watts — a typical modern full-size refrigerator draws 80-150W while the compressor runs, but it only runs part of the time. Over a full day it averages roughly 1-2 kWh.
- Surge (starting) watts — when the compressor kicks on, it briefly spikes to 600-1,200W for a fraction of a second. Your power station's surge rating must clear that spike or it'll trip, even if the running draw is tiny.
This is why a 300Wh unit with only 600W output is a bad fridge backup: it may not survive the startup surge, and even if it does, it'll be empty in a few hours.
How long each tier runs a fridge
Assuming an efficient fridge averaging ~1.5 kWh/day (about 60W continuous average):
- ~500Wh — roughly 6-8 hours. An overnight bridge, not a multi-day solution.
- ~1,000Wh (like the EcoFlow Delta 2) — roughly 14-18 hours. A full day if you're careful.
- ~2,000Wh (like the Jackery Explorer 2000 Plus or Bluetti AC200L) — 1.5-2+ days on the fridge alone, more if you only run it in cycles.
- 3,000Wh+ expandable (like the Anker SOLIX F3800) — multiple days, and effectively indefinite if you add a solar panel to recharge during daylight.
The trick that doubles your runtime
You don't need to power the fridge continuously. A full fridge stays cold for hours with the door closed. Running the compressor for ~20 minutes every couple of hours keeps food safe and can double or triple how long a given battery lasts. Pair that with a solar generator bundle and a 2,000Wh unit can ride out a multi-day outage.
Don't forget the other loads
If you also need phones, fans, lights, a router, and a CPAP, add roughly 300-600Wh per day on top of the fridge. That math is exactly why the 1,000-2,000Wh tier is the most-recommended for hurricane backup.
Browse all power stations by capacity, or set a price alert on the size you need so you buy it on sale, not in a panic.