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Winter Power Outage Checklist

By Russ DeRouen, Vertura Group · Updated October 16, 2026

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Most outage advice is either a vague "have a kit" or a frightening shopping list. This checklist is organized by the problems you will actually face, in the order you will face them. Tick what you already have; buy only what fills a real gap.

Ice-coated trees after an ice storm — Photo: Tom Shortell, source, CC BY 2.5. Illustrative scene, not a product we tested.

The 60-second version: working CO alarm with battery backup · one warm room plan · lights that are not candles · a way to charge phones · 3 days of water and food that needs no cooking · a plan for any medical device that needs power · a fridge thermometer.

Before the storm (do this in October)

Safety first

Carbon monoxide alarm near every sleeping area, battery-operated or with battery backup (CDC recommendation). Test it now.
Smoke alarms tested.
Know where your main breaker and water shutoff are.
A fire extinguisher you know how to use.

Heat

Choose your "warm room": small, interior if possible, few windows, and you can close the door.
Extra blankets, sleeping bags, hats, and wool socks for everyone.
Towels or a draft stopper for the warm room's door.
If you have a fireplace or wood stove: chimney inspected, dry wood stocked.

Food and water

Water: Ready.gov recommends one gallon per person per day for several days. Include pets.
Food that needs no cooking or refrigeration: canned goods (plus a manual can opener), nut butter, crackers, cereal.
Appliance thermometers in the fridge and freezer (USDA says keep 40°F or below and 0°F or below).
Freeze jugs of water now to fill freezer gaps; a full freezer holds cold longer.
A cooler and frozen gel packs.

Fridge and freezer thermometers → Amazon

Light and power

One hands-free light per adult (headlamp) and one room lantern. See our lighting comparison.
Spare batteries in the sizes your lights use, stored together.
Power banks charged, plus the cables to use them.
Decide whether you need a portable power station. Use the calculator to size one honestly.

Medical and family needs

Anyone on a CPAP, oxygen concentrator, or powered medical device: ask the device maker about battery options and runtime, and register with your utility's medical priority program if it has one.
Medications that need refrigeration: a plan (cooler plus ice) and a list.
Paper copies of key phone numbers.
Pet food, litter, and a warm spot for pets.

Communication

A battery or hand-crank NOAA weather radio.
Your utility's outage reporting number and app saved.
Car kept at least half full of fuel (also a safe place to charge phones, outdoors only, never in a garage).

During the outage

Confirm it is an outage. Check your breakers, then your utility's outage map. Report it.
Unplug sensitive electronics (TV, computer, router) to protect them from the surge when power returns. Leave one lamp switched on so you know when it is back.
Close fridge and freezer doors and leave them closed. USDA: about 4 hours for the fridge, about 48 hours for a full freezer.
Move everyone into the warm room and close the door. Layer up before you get cold.
Never use a generator, grill, camp stove, or gas oven for heat indoors. CDC says generators must be more than 20 feet from windows, doors, and vents. See staying warm safely.
Conserve phone battery: low-power mode, brightness down, one person checks news at set times.
Check on neighbors, especially older adults living alone.

After the power comes back

Wait a few minutes before plugging electronics back in, one at a time.
Check fridge and freezer thermometers. USDA: discard perishables (meat, dairy, eggs, leftovers) that were above 40°F for more than 2 hours. Food with ice crystals or at 40°F or below can be refrozen. When in doubt, throw it out.
Restock what you used, recharge everything, and note what you wished you had.

Who should skip buying extra gear

Apartment dwellers with short, rare outages usually need only lights, power banks, blankets, and water. A big power station is overkill.
Anyone tempted by a fuel generator without a safe outdoor spot (no yard, shared walls, balcony only): skip it. CO risk outweighs convenience.
Homes with a working wood stove and a standby generator already cover heat and power; focus on CO alarms, food safety, and lighting.

FAQ

How long will food stay safe in the fridge when the power goes out?

USDA says an unopened refrigerator keeps food safe for about 4 hours. A full freezer holds its temperature for about 48 hours, or about 24 hours if half full, as long as the door stays closed.

Should I buy a generator or a portable power station?

A power station is quiet and safe indoors but stores limited energy. A fuel generator makes much more power but must run outdoors, at least 20 feet from doors and windows per CDC. Many households only need a power station for phones, lights, a CPAP, and a fridge in short bursts.

What is the first thing to do when the power goes out in winter?

Check whether the outage is just your home (breaker) or the area, report it to your utility, unplug sensitive electronics, keep fridge and freezer doors closed, and move everyone into one room to conserve heat.

Related guides

Sources

About the author: Russ DeRouen runs Vertura Group. Guides on this site are researched from manufacturer specifications and public safety sources, which are linked on each page. We do not claim hands-on lab testing unless a page says so. How we research.