How to Keep Your Refrigerator and Freezer Running During a Power Outage

Last updated: 2026-07-13

A refrigerator draws far less power than most homeowners assume — typically 100 to 400 watts running, with a brief surge at startup. That means a mid-size portable power station, not a whole-home generator, is usually enough to keep a fridge and freezer cold through a multi-day outage. The real risk isn't finding enough capacity; it's guessing at the wattage, ignoring the compressor's surge draw, or waiting until the power is already out to figure out the math.

This guide covers exactly what a refrigerator and freezer draw, how to size a power station correctly, how long you actually have before food spoils, and when it makes more sense to look at a permanent battery backup instead of a portable one.

Why This Is a Different Problem Than People Expect

Most people picture keeping a refrigerator running as a large, continuous power draw — something on the scale of running a window AC unit all day. In practice, a refrigerator's compressor doesn't run constantly. It cycles on and off, typically running about 30-40% of the time to maintain temperature, which means the average power draw over a day is much lower than the running wattage on the appliance's label.

The complication is the startup surge. When a compressor kicks on, it briefly draws 2-3 times its running wattage for a fraction of a second. A power station that can comfortably handle a refrigerator's continuous 150W draw can still trip or fail to start the compressor if it can't deliver that surge. Sizing for a refrigerator or freezer means sizing for the surge, not just the running average.

How Much Power a Refrigerator and Freezer Actually Draw

Check the yellow EnergyGuide label on your specific appliance for exact numbers, but these are reliable planning figures for standard residential units:

|---|---|---|---|

| Standard refrigerator (top freezer) | 100–200W | 400–600W | ~1.5 kWh/day |

| Side-by-side refrigerator/freezer | 150–400W | 600–1,200W | ~2–2.5 kWh/day |

| Standalone chest freezer | 100–250W | 400–800W | ~1–1.5 kWh/day |

| Standalone upright freezer | 150–300W | 500–900W | ~1.3–1.8 kWh/day |

| Mini fridge/beverage cooler | 50–100W | 200–350W | ~0.5 kWh/day |

Two things stand out here. First, even a large side-by-side refrigerator rarely needs more than 400W of continuous capacity — well within range of a mid-size portable power station. Second, the surge column is where sizing mistakes happen. A power station rated for exactly 400W of continuous output may not handle a 1,200W surge from a side-by-side's compressor kicking on, even though it looks adequately sized on paper.

Sizing a Power Station for a Single Refrigerator

For a standard refrigerator drawing 150W continuously with a compressor cycling on and off, a battery in the 1,000–1,500Wh range comfortably covers 24+ hours of runtime, accounting for the roughly 10-15% efficiency loss inherent in converting battery DC power to the AC power a refrigerator plugs into.

Jackery Explorer 1000 — 1,002Wh capacity, 1,000W AC output, 2,000W surge

This size hits the sweet spot for a single standard refrigerator. It delivers roughly 20-24 hours of runtime accounting for compressor cycling, and its 2,000W surge rating covers the startup spike of nearly any residential fridge without issue. It's also light enough (about 22 lbs) to move between the kitchen and a car for charging if the outage runs long.

If your refrigerator is a larger side-by-side model or you also want to run a chest freezer off the same unit, that math changes quickly — cycling loads add up, and running two compressors on overlapping schedules means occasional moments where both units draw power at once.

Sizing for a Refrigerator Plus a Freezer

Running a refrigerator and a separate freezer off one power station means planning for the worst-case moment when both compressors happen to cycle on simultaneously, not just the average combined draw.

EcoFlow DELTA 2 Max — 2,048Wh capacity, 2,400W AC output, expandable

For a refrigerator (150W) and a chest freezer (150W) running together, this covers roughly 36-48 hours of combined runtime, and the 2,400W continuous rating with strong surge handling means both compressors can start at the same moment without the unit faltering. It's also expandable with additional battery modules, which matters if the outage stretches past a couple of days rather than just an overnight event — a real consideration during a multi-day storm-related outage rather than a brief afternoon blip.

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What This Costs vs. What's at Stake

A Jackery Explorer 1000 runs roughly $699-$899 depending on current promotions; an EcoFlow DELTA 2 Max runs $1,499-$1,699. A full refrigerator and a full chest freezer of food, meanwhile, can easily represent $400-$800 in groceries — and that's before counting the cost and hassle of restocking during a stressful storm recovery. A power station sized correctly for your kitchen pays for itself the first time it's actually needed, and keeps doing double duty as backup for camping, tailgating, or general power outages the rest of the year.

Start Here

The takeaway: a standard refrigerator only needs about 150-400W of continuous power and a power station with enough surge capacity to handle the compressor's startup spike — a Jackery Explorer 1000 comfortably covers a single refrigerator, while an EcoFlow DELTA 2 Max covers a refrigerator and freezer running together for multiple days. Check your appliance's actual wattage on its EnergyGuide label, size for the surge and not just the running watts, and if outages in your area are a recurring multi-day problem, price out a permanent solar-plus-battery system through EnergySage rather than relying on a portable unit alone.

Check current pricing on the Jackery Explorer 1000, the EcoFlow DELTA 2 Max, or get a free solar-plus-battery quote through EnergySage before the next storm watch, not during it.

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