Knowledge Base

Food Safety During a Power Outage

Overview

Power outages can affect the safety of refrigerated and frozen foods. Knowing how long food stays safe and when to throw it away can help prevent foodborne illness. Use the guidance below to protect yourself and your family during and after a power outage.

Refrigerated Food: When to Save It and When to Throw It Out

According to the USDA, a refrigerator will keep food safe for up to four hours during a power outage if the door stays closed.

• Follow these steps:

  • Keep the refrigerator door closed as much as possible.
  • If the power is out for more than 4 hours, discard perishable foods.
  • Perishable foods include:
  • Meat
  • Poultry
  • Fish
  • Eggs
  • Leftovers
  • Never taste food to determine if it is safe.
  • Check each food item carefully before deciding to keep it.
  • When in doubt, throw it out.
   

Download the Refrigerate Food During Power Outage Safety Chart.

Frozen Food: When to Save It and When to Throw It Out

A freezer can keep food safe for a limited time if the door remains closed

• A full freezer will keep food safe for about 48 hours

• A half-full freezer will keep food safe for about 24 hours

• Frozen food may be safely refrozen if:

  • It still contains ice crystals, or
  • It is at 40F (4°C) or below

• Food quality may be reduced after refreezing, but it may still be safe.

• Never taste food to determine safety.

•  Use a frozen food safety chart as a general guide when deciding what to keep or discard.

Download the Frozen Food During Power Outage Safety Chart.