What to Do With Your Food During a Power Outage
How long food lasts in the fridge and freezer without power, what to throw out and how to get ready with a thermometer and ice before the next outage.
The power goes out, it's six in the evening, and everything in the refrigerator starts a clock. The question is always the same: can I eat it or do I throw it out? The answer depends on two numbers worth memorizing.
The times that matter
According to the FDA and the USDA, with the doors kept closed:
- The refrigerator keeps food safe for about 4 hours.
- A full freezer holds for about 48 hours; if it's half full, about 24.
Every time you open a door, cold escapes. So the best move during an outage is also the most boring: don't open it. And write down what time the power went out, because at the four-hour mark you'll need to know.
What to throw out after 4 hours without cold
Perishable food that has been above 40 °F (4 °C) for more than four hours: meat, poultry, fish, eggs, leftovers and dairy such as milk or yogurt. This is a case where "when in doubt, throw it out" is the rule. And a warning the USDA repeats every time: never taste food to decide whether it's safe. The bacteria that make people sick don't always change the smell or the taste.
What keeps with more margin is food that doesn't need the cold: whole fruit, hard vegetables, peanut butter, bread, canned goods.
What to prepare before the next outage
- Appliance thermometers, one in the refrigerator and one in the freezer. The safe readings are 40 °F (4 °C) or below up top and 0 °F (−18 °C) or below in the freezer. When the power returns, that's what tells you what survived.
- Frozen water bottles or bags in the freezer. A fuller freezer holds longer, and later the ice cools a cooler.
- A cooler ready to go. If the outage will run past four hours, move the most delicate food in with ice.
- Group the food in the freezer: packages packed together stay cold longer.
When the power comes back
Check the thermometer. If the freezer food still has ice crystals, or reads 40 °F or lower, it can be refrozen, though quality may suffer. Otherwise, judge item by item. Take the chance to clean and dry the refrigerator before refilling it.
One detail almost nobody remembers: if you take a medication that needs refrigeration, ask your doctor or pharmacist what to do. Ready.gov says that if the power is out for more than a day, the usual advice is to discard it unless the label says otherwise.
And meanwhile, eat
Use what's closest to spoiling first. It's the same idea as the FIFO method, in an urgent version. And it's a good reason to keep food that needs no refrigeration or much cooking in the pantry. If you cook with fire or a generator, read the carbon monoxide warning in this power outage guide first.
To know what gets eaten first
With your pantry loaded in Despendo, the app shows what expires soonest, and the AI recipes can suggest a dish from what you have. When the lights go out, having the list on your phone (and the phone charged) helps more than you'd think.
Sources and further reading
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By subscribing you accept our privacy policy.Despendo is an independent app. This guide is general information: adapt it to your family, climate and medical needs, and always follow local authorities' instructions.
