Power Outage Preparedness Checklist for Families

September 8, 2026

A family power outage plan comes down to four things: enough supplies to stay put for at least 72 hours, safe water and food, a way to see and communicate when the grid is down, and a clear plan for the people in your home who depend on power or need extra care. Federal guidance from Ready.gov sets the 72-hour baseline and one gallon of water per person per day. FoodSafety.gov covers how long the refrigerator and freezer hold. Everything else on this checklist is about turning those numbers into a routine your family can run without thinking.

Build the plan around 72 hours

Ready.gov recommends that households keep supplies for at least 72 hours. That window covers the most common outages, where storms, grid faults, heat waves and ice leave crews a few days of work before service returns. Treat three days as the floor and extend it if your area sees longer events.

The core kit for a family:

Water: one gallon per person per day for drinking and basic hygiene, so a family of four needs 12 gallons for three days.
Food that needs no cooking or refrigeration, plus a manual can opener.
Flashlights or headlamps and spare batteries for every family member.
A battery or hand-crank radio for local emergency broadcasts.
A first aid kit, personal hygiene items and a supply of daily medications.
Cash in small bills, since card readers and ATMs need power.
Copies of important documents in a waterproof bag.
Pet food and supplies if you have animals.

Store the kit in one place everyone knows, and check it twice a year. The free Prepared American System guide walks through power outages, supply shortages and a family communication plan in a format you can print and keep with the kit. It is part of the free eBooks and guides collection.

Water and food: what stays safe and for how long

Water first. Fill clean containers before a forecasted storm, and remember that a gallon per person per day is a minimum. Hot weather, infants, nursing mothers and anyone who is ill will need more.

For food, FoodSafety.gov gives two numbers worth memorizing. A refrigerator keeps food safe for about 4 hours without power if the door stays closed. A full freezer holds for about 48 hours, and a half-full freezer for about 24 hours, again with the door closed. Every time the door opens, cold air leaves and those windows shrink.

A simple household routine:

Tape a note to the refrigerator with the time the power went out.
Eat from the pantry first, then the refrigerator, then the freezer.
Keep a thermometer in the refrigerator and freezer so you judge by temperature rather than by guessing.
When in doubt, throw it out. Perishable food that has sat too long above safe temperatures is not worth the risk.

Coolers with ice or frozen water bottles buy extra time for medications and essentials once the refrigerator window has passed.

Lighting, phones and small-device power

Flashlights and headlamps are safer than candles, especially with children in the house. Give each family member a light and keep one at each bedside and near the main exits. Battery lanterns are the best choice for shared rooms.

Charge phones, power banks and rechargeable lights whenever severe weather is in the forecast. A car can charge a phone in a pinch, but only with the vehicle parked outdoors in the open. Keep a printed list of emergency numbers and family contacts in case phones die or the network is overloaded.

Communication plan and meeting points

Outages often arrive with the rest of a storm, and family members may be at work, at school or on the road when it starts. A written family communication plan is a standard piece of preparedness guidance for exactly that reason. Decide these items now and keep a copy in every wallet and backpack:

An out-of-area contact everyone checks in with, since long-distance texts often go through when local calls do not.
A meeting point right outside the home for a sudden emergency, such as a neighbor's driveway or a mailbox.
A meeting point outside the neighborhood in case you cannot get home, such as a library, a church or a relative's house.
Who picks up which child, and a backup adult for each.
Where the supply kit, the shutoff valves and the breaker panel are.

Text rather than call during an event. Texts use less network capacity and often arrive when calls fail.

Medications and medical devices that need power

This is the section most families skip, and it is the one that matters most. If anyone in the home uses a device that needs electricity, such as an oxygen concentrator, a CPAP machine, a powered wheelchair or a refrigerated medication, the plan has to account for it before the lights go out.

Talk to the prescribing clinician or device supplier about backup power options and how long the device can run on a battery.
Ask your utility whether it keeps a registry for customers who depend on powered medical equipment. Some do, and registration can affect outreach during an outage.
Keep a written list of medications, dosages and pharmacy numbers in the kit, and refill prescriptions before they run low rather than at the last dose.
For medications that need refrigeration, have a cooler and ice plan ready and know the manufacturer's guidance on temperature.
Decide in advance where you would relocate if the outage lasts longer than the device's backup, and how you would get there.

Generators, carbon monoxide, heating and cooling

A portable generator is useful and dangerous in equal measure. The rule has no exceptions: never run a generator indoors, in a garage, in a basement or in any enclosed or partially enclosed space, even with the door open. Generator exhaust contains carbon monoxide, which is colorless and odorless. Run the generator outside, well away from windows, doors and vents, and install battery-powered carbon monoxide alarms on every level of the home.

Plug appliances directly into the generator with heavy-duty outdoor extension cords, or have a licensed electrician install a transfer switch. Never connect a generator to a wall outlet. Backfeeding can send power into the lines and endanger utility workers.

Heating and cooling follow the same logic. Do not use a gas stove or oven to heat the house, and never bring a charcoal grill, camp stove or fuel-burning heater indoors. In cold weather, close off unused rooms, layer clothing and gather in one room. In hot weather, close blinds during the day, stay hydrated and know where the nearest cooling center is. Check on elderly neighbors in both cases.

Firearms during an emergency: secured and accounted for

Emergencies change the rhythm of a household. Relatives and neighbors may shelter with you, children are home from school, and adults are distracted by the work of keeping everyone comfortable. That is exactly when a firearm needs to be more controlled, not less.

Locked storage is the baseline. A safe or lock box with the key or code controlled by an adult keeps a firearm out of reach of children and guests, and that does not change because the power is out. Know where every firearm in the house is and confirm it during the event. If you use a quick-access mount for an adult who is ready to respond, keep it in an adult-only space, such as a locked bedroom or office, and never as a substitute for locked storage when children are present. The Magnetic Mount PRO installs at a bedside, desk or doorway and holds most flat top handguns, which makes it simple to keep a handgun in a fixed, known location inside an adult-controlled room.

For a fuller look at storage with children at different ages, read Fatherhood, Responsibility and Readiness. And in the dark, the four rules of firearm safety still apply: treat every gun as loaded, never point at anything you are not willing to destroy, keep your finger off the trigger until your sights are on target, and be sure of your target and what is beyond it.

Quick answer

How many days of supplies should a family keep for a power outage? At least 72 hours, according to Ready.gov. Extend that if your area has a history of longer outages.

How much water per person? One gallon per person per day for drinking and basic hygiene, with more for hot weather, infants and anyone who is ill.

How long is food safe in the refrigerator and freezer? About 4 hours in an unopened refrigerator, about 48 hours in a full freezer and about 24 hours in a half-full freezer, per FoodSafety.gov.

Where can I run a generator? Only outdoors, away from windows, doors and vents. Never indoors or in a garage, even with the door open.

What about firearms during an outage? Locked storage is the baseline. Know where every firearm is, and keep any quick-access mount in an adult-only space.

The preparedness figures above summarize public guidance from Ready.gov and FoodSafety.gov; follow instructions from local authorities and your utility during an actual event. Firearm storage and carry laws vary by state, county and municipality. Nothing in this article is legal advice. Verify current local regulations before carrying or storing a firearm, and always follow the four rules of firearm safety.

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