How-to

How to Prepare for a Power Outage

Updated Oct 28, 2026 2 min read By the WieHow – Home, Energy & Money Guides editorial team
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Quick answer

Keep flashlights, batteries, a power bank, water and non-perishable food for several days. Know how to keep food safe: a closed refrigerator stays cold for about 4 hours and a full freezer for about 48 hours. Never run a generator, grill or camp stove indoors or in a garage because of carbon monoxide.

On this page
  1. Step by step
  2. Food safety during an outage
  3. Backup power options

Power outages are becoming more common with severe weather and heat waves. Preparing takes an afternoon and a modest budget.

Step by step

  1. Build a basic kit

    Flashlights or headlamps, extra batteries, a battery or hand-crank radio, a first aid kit and power banks.

  2. Store water

    Keep at least one gallon per person per day for several days, plus water for pets.

  3. Stock non-perishable food

    Canned goods, crackers, nut butter and other foods that need no cooking. Include a manual can opener.

  4. Plan for medical needs

    If anyone depends on powered medical equipment, have a backup power plan and tell your utility; many offer priority programs.

  5. Protect electronics

    Unplug sensitive devices during the outage to avoid damage from surges when power returns.

  6. Know your home

    Learn how to manually open your garage door and where your main breaker and water shutoff are.

  7. Stay informed

    Sign up for your utility's outage alerts and keep phones charged when severe weather is forecast.

Food safety during an outage

Stays safe (doors closed)
RefrigeratorAbout 4 hours
Full freezerAbout 48 hours
Half-full freezerAbout 24 hours

Discard perishable foods that have been above 40 °F for more than two hours. When in doubt, throw it out.

Carbon monoxide kills: Generators must run outdoors, at least 20 feet from windows and doors. Install battery-powered CO alarms on every level of your home.

Backup power options

  • Power banks and portable power stations for phones, lights and routers.
  • Portable generators for refrigerators and essentials — outdoors only, with proper transfer equipment for home circuits.
  • Home batteries with solar for automatic, silent backup.

Frequently asked questions

Should I report an outage even if neighbors are also out?

Yes. Utilities use reports to locate problems; don't assume someone else has reported it.

Is it safe to use candles?

Battery lights are safer. If you use candles, never leave them unattended and keep them away from anything flammable.

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