Power Outage Preparedness: What to Do Before, During, and After the Lights Go Out

Power outages happen for all kinds of reasons: extreme heat, thunderstorms, hurricanes, winter storms, wildfires, equipment failures, accidents, or an overwhelmed electrical grid.

Sometimes the electricity returns within minutes. Other outages can last hours—or days.

And once the lights go out, the problem isn't simply that you can't watch television or charge your phoneA prolonged outage can affect your home's temperature, refrigeration, medical equipment, communication, cooking, security, water systems, pets, and your ability to receive important emergency information.

That's why every household should have a basic power-outage plan. The goal isn't to prepare for every imaginable scenario. It's to make your family more comfortable, capable, and safe when something ordinary suddenly stops working.

BEFORE: Prepare While the Power Is On

Start with lighting. Every household should have flashlights or battery-powered lanterns that family members can find easily in the dark. Keep extra batteries available and periodically check that your equipment still works.

Next, think about power. Keep rechargeable power banks charged and consider what devices are truly essential during an extended outage. Phones may become your primary source of communication and emergency information, so preserving battery life matters.

If someone in your household relies on electrically powered medical equipment, develop a specific backup-power and evacuation plan rather than relying solely on your general emergency supplies.

Your outage supplies should also include drinking water, shelf-stable foods that require little or no cooking, necessary medications, basic first aid supplies, sanitation items, pet supplies, and a battery-powered or hand-crank radio.

Protect Your Refrigerator and Freezer

Food safety becomes increasingly important as an outage continues. Keep refrigerator and freezer doors closed as much as possible. Every time they're opened, cold air escapes.

As a general rule, an unopened refrigerator can keep food cold for about four hours. A full freezer can generally maintain its temperature for about 48 hours, or approximately 24 hours if it is half full, provided the door stays closed.

A refrigerator/freezer thermometer can remove some of the guesswork when you're deciding whether food remained at a safe temperature. And remember the old rule: when in doubt, throw it out. Never taste questionable food to determine whether it's safe.

DURING: When the Lights Go Out

First, determine whether the outage is limited to your home or affecting the surrounding area. Check your electrical panel if it's safe to do so, then look for information from your utility company or local emergency officials.

Unplug sensitive electronics and appliances that could be damaged when electricity is restored. You can leave one light switched on so you'll know when power returns.

Use flashlights and battery-powered lanterns whenever possible instead of candles. Open flames introduce an unnecessary fire hazard, particularly when people are already navigating a dark home.

Then conserve your resources. Reduce unnecessary phone use, switch devices to low-power mode, and avoid repeatedly opening refrigerators and freezers.

Extreme Temperatures Change the Situation

A power outage during mild weather can be uncomfortable. A power outage during extreme heat or cold can become dangerous.

If your home is becoming dangerously hot, don't assume you simply need to tough it out. Identify cooling centers, public facilities, friends, relatives, hotels, or other safe locations with electricity before an emergency occurs. The same principle applies during extreme cold.

Pay particular attention to infants, older adults, people with certain medical conditions or disabilities, and anyone who may have difficulty regulating their body temperature.

Check on neighbors, friends, and relatives who may need additional help.

Generator Safety Can Save a Life

Portable generators can be extremely useful during extended outages, but they also create a potentially deadly carbon-monoxide hazard.

Never operate a portable generator inside a house, garage, basement, shed, or other enclosed or partially enclosed space.

Generators need to be operated outdoors and well away from doors, windows, and vents, following the manufacturer's safety instructions.

The same warning applies to charcoal grills, camp stoves, and other fuel-burning devices. Never use them indoors to cook or produce heat.

Every home should also have functioning carbon-monoxide alarms.

Don't Forget Your Animals

Your pets experience the outage too. Keep extra food and drinking water available for every animal in your household. Have medications, carriers, leashes, identification, and veterinary information ready if you suddenly need to leave.

Temperature is especially important. During extreme heat, provide plenty of cool water and move animals somewhere with safe temperatures if your home becomes too hot. During cold-weather outages, provide appropriate shelter and warmth.

If you have livestock or other outdoor animals, your plan may need to include backup water systems, ventilation, fencing, feeding, and alternative shelter.

Protect Your Home and Property

Power outages can create secondary problems around your home. If your property uses a sump pump, consider whether backup power is appropriate. In freezing conditions, think about protecting plumbing from frozen pipes. Battery-powered security lighting can also provide additional visibility around your property.

If you use a generator or portable power station, learn how to operate it before an emergency. An outage is not the ideal time to open the instruction manual for the first time.

AFTER: When the Electricity Comes Back

When power returns, give yourself a moment before returning everything to normal.

-Check your property for electrical problems, leaks, unusual smells, or other damage. Restore appliances gradually rather than switching everything on simultaneously.

-Check refrigerated and frozen food carefully and discard anything that is no longer safe.

-Then recharge your preparedness equipment. Recharge power banks, flashlights, radios, portable power stations, and other rechargeable devices. Replace used batteries, water, food, pet supplies, fuel, or other emergency items.

Finally, ask one very useful question:

What did we wish we had?

Maybe you needed another flashlight. Maybe your phone battery disappeared faster than expected. Maybe the kids struggled without a night-light. Maybe the dog became overheated. Maybe you realized your elderly neighbor needed assistance.

Those observations are valuable. Write them down and improve your plan.

Your Power-Outage Starter Checklist

You don't need to buy everything at once. Start with a few basics and build from there: flashlights and lanterns, spare batteries, charged power banks, drinking water, shelf-stable food, medications, first aid supplies, pet food and water, a radio, basic hygiene supplies, a refrigerator/freezer thermometer, emergency contact information, and a safe backup plan for heating or cooling.

Preparedness isn't about expecting disaster every time the weather changes. It's about creating options. When the lights go out, a prepared household already knows where the flashlights are, how they'll communicate, what they'll eat, how they'll protect their pets, and when it's time to leave for somewhere safer. That knowledge creates something incredibly valuable during an emergency: peace of mind.