Spare·Theory
PRINT & USEEMERGENCY PREPAREDNESS

Power Outage Preparation Checklist

A blackout is a test of what you already own. Work through this list on a calm day so that when the power drops you are bored, not busy.

11 min readUpdated October 2026Research-based

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Light you can reach

The first thing to fail and the last to be ready. Keep light where your hands can find it in the dark.

  • COREA headlamp per personFrees both hands and beats a handheld torch Amazon
  • CORERechargeable LED lanternLights a whole room for cooking and moving Amazon
  • Backup torch with spare batteries Amazon
  • Glow sticks or candle-free light for cupboards Amazon

Power for your devices

Size the battery to what must keep running, not to the biggest number on the box.

  • COREA power bank sized to your essential loadMatch watt-hours to the router, phone and lamp you must keep alive Amazon
  • Wall and car chargers for the power bank Amazon
  • COREFresh batteries for torches and the radio Amazon
  • A fold-up solar panel to top up slowlyOnly pays off if the outage may last days Amazon

Keeping food and medicine cold

A closed fridge is the plan. These lines buy you hours and honesty about what to keep.

  • Fridge and freezer thermometersTells you when food is actually unsafe Amazon
  • Ice packs or a bag of ice in the freezer Amazon
  • A cool box for when the fridge must be emptied Amazon
  • A small supply of shelf-stable foodSo you open the fridge less Amazon

Warmth and shelter

The quiet risk in any long outage, in winter or summer.

  • COREWool or thermal blanket per person Amazon
  • Warm layers, hat and socks by the bed Amazon
  • A safe indoor heat source you would actually useOnly with working carbon-monoxide alarms Amazon
  • CORECarbon-monoxide alarm with fresh batteries Amazon

Water, food and no-cook meals

Pumps and kettles stop when power does. Plan for a kitchen that runs cold.

  • COREStored drinking water, four litres per person per dayThree-day floor; taps may fail with the power Amazon
  • COREManual can openerThe most-forgotten item in any no-cook kit Amazon
  • No-cook food that needs no fridge or hob Amazon

Staying informed

Knowing how long the outage will last changes every other decision.

  • Wind-up or hand-crank radioOfficial updates when masts and Wi-Fi are down Amazon
  • A printed list of the utility fault line and contacts Amazon
  • Power bank kept charged as a phone lifeline Amazon

A power outage is usually shorter than people fear, and longer than they plan for. The first few hours feel like a break. By the second day, a cold house and a dead phone make it a problem you solve with what you already own. This list holds the few things that turn an outage into something dull and survivable. That is the whole goal.

It is built to be used, not read. Tick each line as you gather it, so the list shrinks to the real gaps in your home. Every physical item links to current options on Amazon.com, so you can weigh the choices and prices yourself. We do not set those prices. Those are affiliate links, so we may earn a commission at no extra cost to you.

Order matters here more than volume. In the first hour you need light and a way to charge a phone. Over the next day you need to keep food safe, stay warm, and hear what is going on. A freezer full of thawing food or a dark house is where a small plan pays off.

Everything below is general guidance drawn from published safety advice. It is not a professional inspection and not medical advice. Read the safety note under the list. Then treat the highest-risk lines first: safe warmth, water you can drink, and any medicine you cannot miss.

At a glance

  • The first thing to fail in an outage is light, and the second is the phone you reach for in the dark.
  • Backup power only earns its cost if its capacity matches the few devices you truly must keep running.
  • A closed fridge holds a safe temperature for about four hours; the plan is to open it less, not to cool it more.
  • Heat and cold are the silent risks. A warm room and dry layers matter more than another gadget.

The full list

The same list the builder above ticks. Use it for printing or when JavaScript is off.

Light you can reach

The first thing to fail and the last to be ready. Keep light where your hands can find it in the dark.

  • COREA headlamp per personFrees both hands and beats a handheld torch Amazon
  • CORERechargeable LED lanternLights a whole room for cooking and moving Amazon
  • Backup torch with spare batteries Amazon
  • Glow sticks or candle-free light for cupboards Amazon

Power for your devices

Size the battery to what must keep running, not to the biggest number on the box.

  • COREA power bank sized to your essential loadMatch watt-hours to the router, phone and lamp you must keep alive Amazon
  • Wall and car chargers for the power bank Amazon
  • COREFresh batteries for torches and the radio Amazon
  • A fold-up solar panel to top up slowlyOnly pays off if the outage may last days Amazon

Keeping food and medicine cold

A closed fridge is the plan. These lines buy you hours and honesty about what to keep.

  • Fridge and freezer thermometersTells you when food is actually unsafe Amazon
  • Ice packs or a bag of ice in the freezer Amazon
  • A cool box for when the fridge must be emptied Amazon
  • A small supply of shelf-stable foodSo you open the fridge less Amazon

Warmth and shelter

The quiet risk in any long outage, in winter or summer.

  • COREWool or thermal blanket per person Amazon
  • Warm layers, hat and socks by the bed Amazon
  • A safe indoor heat source you would actually useOnly with working carbon-monoxide alarms Amazon
  • CORECarbon-monoxide alarm with fresh batteries Amazon

Water, food and no-cook meals

Pumps and kettles stop when power does. Plan for a kitchen that runs cold.

  • COREStored drinking water, four litres per person per dayThree-day floor; taps may fail with the power Amazon
  • COREManual can openerThe most-forgotten item in any no-cook kit Amazon
  • No-cook food that needs no fridge or hob Amazon

Staying informed

Knowing how long the outage will last changes every other decision.

  • Wind-up or hand-crank radioOfficial updates when masts and Wi-Fi are down Amazon
  • A printed list of the utility fault line and contacts Amazon
  • Power bank kept charged as a phone lifeline Amazon

How to use this checklist

Work through the builder one group at a time, not straight down the page. Tick anything you already own. Most homes hold three of the light items and one of the power items already. Seeing that progress makes the job feel small. When only a few gaps remain, open each item's link and choose what fits your home.

Then print or save the finished list. Keep one copy with your papers and one in an easily reached bag. A list on a dead phone is no use in the moment it matters. Revisit it before each storm season, and after any change at home. A new baby, a pet or a new medical device each shift what you need.

One caution a shopping list hides: an unpractised kit is a half kit. Once you own the pieces, spend ten minutes finding them in the dark. Charge the power bank. Open the first-aid tin with cold hands. Knowing where things are by feel is what turns a drawer of purchases into a plan you can run.

Tick first, buy second. Most outage kits are closer to done than they feel.

Light and power you can reach

In an outage, light is the first need and power the second. Reach for your phone in the dark and its battery is already low. So keep dedicated light: a lantern for the room and a headlamp per person. A headlamp frees both hands for packing and repairs. Keep one light where you can grab it without opening a drawer.

Backup power is where marketing oversells the hardest. A unit big enough to run a kettle is huge and costly, and few homes need one. What most people must keep alive is short: a router, a phone, a lamp, and any medical device. Those draw small, steady power. Our power-station runtime calculator adds the watts and the hours for you. The best portable power stations guide maps each size to a real household need. For many homes a plain power bank plus a fold-up panel is enough.

Buy the smallest battery that covers your real list. A big unit tempts you to run things you did not need to run. Then check the charge once a month. A dead power bank in a drawer is the commonest outage disappointment, and a thirty-second check prevents it.

Dedicated light in the dark, then the smallest battery that covers your real must-run list.

Keep the fridge cold, then decide

A closed, cool fridge keeps food safe for around four hours. A full freezer holds closer to a day if it stays shut. So the first rule of an outage is to open the doors less, not more. A thermometer inside tells you the truth, because a fridge that feels cool can still be too warm for safety.

Group your food by how you feel about losing it. The top shelf and the door hold things that are fine to warm. The back and bottom hold meat and dairy you would rather keep cold. Move the risky items into a cool box with ice packs early, and eat the forgiving items first. Our field test on how long a fridge really runs shows why a full freezer beats an empty one, and the blog on powering a refrigerator during a blackout covers when a small battery is worth it.

Do not taste food to judge it. After an outage, check the thermometer and the ice. If the fridge stayed under the safe temperature, the food is likely fine. If it warmed and you are unsure, the honest answer is to throw it out. A sick stomach is a poor trade for a carton of milk.

The four-hour habit: Keep the doors shut for the first hours. Every opening lets warm air in and shortens the safe window you are trying to stretch.

Staying warm when the heat stops

Electric heat failing is the loudest risk that people plan for quietly. The body loses heat fast in a still, cold house, and overnight is worst. Wool or thermal blankets, a warm layer and a hat hold your own heat far better than trying to run a failing heater. Staying dry is half the battle, so keep a spare set of clothes within reach.

If you bring any combustion indoors, do it with care and never sleep near it. Barbecues, camp stoves and garage generators produce carbon monoxide, which is silent and deadly. A working carbon-monoxide alarm is not optional if you burn anything inside. Open a window for ventilation, and move everyone outside if the alarm sounds.

The reverse risk is summer heat with the air conditioning down. Close the blinds on the sun-facing side, gather on the lowest cool floor, and drink water even when you are not thirsty. Fans help, but only until the room air is hotter than your skin. Knowing which season threatens you shapes what you buy first.

Hold body heat with layers and dry blankets; never burn fuel indoors without an alarm.

Water, food and a kitchen that runs cold

Water pumps and electric kettles stop when power does. So store drinking water ahead, at roughly four litres per person per day, and keep some for basic washing. A manual can opener earns its place the moment you realise every tin now needs it. Plan meals that need neither a hob nor a fridge, so eating stays calm.

Rotation beats volume. Keep the no-cook food you already enjoy, and use it in normal life so you replace what you take. A hoard no one eats quietly expires. Shelf-stable milk, nut butter, dried fruit and tinned meals cover a few days without cooking. A comfort item or two helps more than its cost suggests when a household is cooped up and tired.

Medicine is the personal part of this group. Some drugs need refrigeration; check the label and ask a pharmacist about the ones that matter. Keep a small buffer of anything you must not miss. Photograph the labels so a pharmacy can reproduce them if the paper is lost in a rush.

Knowing what is going on

The length of an outage changes every decision. Ten minutes is a nuisance; two days is a plan. Mobile masts and home internet often fail during a serious outage, so a phone alone is a thin source. A hand-crank or wind-up radio carries official warnings when the screens go dark, and it needs no batteries to be worth having.

Pair the radio with a written list kept with your kit: the utility fault line, your neighbours, and where you would meet. A printed card outlasts a search you cannot make offline. The best emergency radios guide walks through the bands and features that matter for weather and official alerts, so you pick a radio that can actually hear the message you need.

Finally, agree on a signal. If the family is not together when power drops, a set meeting point and one out-of-area contact remove the panic of not knowing. Write it down and put a copy in each bag. The most disruptive part of an outage is not the dark. It is the not-knowing.

A crank radio plus a printed contact plan answers the one question that drives every other choice: how long.

Buy now, buy soon, or skip

PriorityWhat it meansTypical items
Buy nowYou will want it within the first hourHeadlamps, a lantern, a charged power bank, stored water, warm blankets
Buy soonMatters over a day or two without powerFridge thermometer, ice packs, no-cook food, a crank radio, spare batteries
Only if it appliesDepends on your home or healthRefrigerated medicine, a larger battery for a CPAP, indoor-heater safety, a fold-up solar panel

This ranks what earns a place in an outage kit, not specific products or prices — the Amazon.com links show current options for you to compare.

Key terms

Watt-hour (Wh)
A measure of stored energy — how long a battery lasts, not how much it can run at once.
Essential load
The short list of devices you must keep running, which sets the size of backup power you need.
Danger zone
The food-safety temperature band that microbes grow in, roughly 5 to 60 degrees Celsius.
Carbon monoxide
A silent, odourless gas from burning fuel indoors; alarms are essential with any heater or generator.
No-cook food
Food that needs no heating or refrigeration, so it works when the power does not.

Tips and common mistakes

Field-tested tips

  • Tape a headlamp inside the fridge door so the first person up in a night outage has light.
  • Charge the power bank the same night you check the smoke-alarm batteries — pair the two habits.
  • Group fridge food by loss-tolerance before you need to, so the decision is already made in the dark.
  • Keep one warm blanket and a bottle of water in each bedroom, not all in one hall cupboard.

Common mistakes

  • Relying on the phone torch as the only light, then finding it dead.
  • Buying a large power station for a load a small unit would carry easily.
  • Opening the fridge repeatedly to check, and shortening its safe window.
  • Running a generator or barbecue indoors to stay warm or cook.

Frequently asked questions

How long will my fridge stay cold with the power off?

A cool, unopened fridge keeps food safe for about four hours, and a full freezer can hold close to a day if it stays shut. The real variable is how often the door opens, since each opening lets warm air in. A thermometer inside is the honest check, because a fridge that still feels cool can be warm enough to spoil food. If you expect a long outage, move risky items to a cool box with ice packs early.

What size power station do I need for a blackout?

Size it by what you must keep alive and for how long, not by the highest wattage on the box. Most homes need only a router, a phone, a lamp and any medical device, which draw small, steady power. Add their watts, multiply by the hours, and pick the closest unit. Our runtime calculator does the arithmetic, and a mid-sized battery is often ample where a huge one is overspent.

Is it safe to heat or cook indoors during an outage?

Only with appliances built and ventilated for indoor use, and never with fuel-burning devices meant for outside. Barbecues, camp stoves and garage generators produce carbon monoxide, which is silent and can be deadly within minutes in a closed room. A working carbon-monoxide alarm is essential if you burn anything at all. When in doubt, keep warm with layers and blankets instead of improvising heat indoors.

Should I unplug appliances when the power goes out?

Unplug anything sensitive, such as a computer or television, and leave one lamp switched on so you notice when power returns. The risk is not the outage itself but the surge when supply comes back. Leave the fridge plugged in, of course, so it stays cold as long as possible. Replug devices one at a time after power is stable rather than all at once.

How much water should I store for outages?

Plan around four litres per person per day for drinking and basic washing, and hold at least a three-day supply as a floor. Taps can fail in an outage because the pumps that move water often need mains power, so stored water is the backup. Keep the supply sealed, cool and dark, and rotate your own containers every six months so it stays fresh when you need it.

What is the single most-often-forgotten outage item?

A manual can opener, closely followed by fresh batteries for the torch and radio. Both are cheap and easy to overlook because they only matter in the one situation you are not living through. Add them to the list now and test that you can find them in the dark. The pattern across outages is that the big items get bought and the small enablers get missed.

About this checklist

Prepared by
Spare Theory editorial · research-based
Last checked
2026-10-10

How we choose what earns a spotWe sequence items by when each one starts to matter during an outage, lead with the few categories that carry a hard rule (light, power sized to load, the four-hour fridge window), and mark as essential only what published safety guidance treats as non-negotiable. We list what to secure rather than specific products or prices, and defer safety and food-handling specifics to published government and food-safety guidance.

Reference basisReady.gov — blackout and power-outage guidanceUS Department of Agriculture — food safety in a power outageConsumer Product Safety Commission — carbon-monoxide alarms