Key takeaways
- Prepare for a power outage with a practical checklist covering water, food, light, heat, charging and safety, plus the gear worth having on hand first.
Preparing for a power outage comes down to six things: safe water, shelf-stable food, light, a way to stay warm or cool, charged communication, and a written plan everyone in the household understands. Most of it is inexpensive and can be set up in a single weekend. The checklist below is organized by priority, followed by the gear that tends to matter most and a worked example showing how much you may need to store for a three-day event.
Start with a plan, not a shopping cart
Gear helps only if you know how you will use it. Spend ten minutes writing down who lives in the home, whether anyone depends on powered medical equipment, what the local weather risks are, and where you would go if you had to leave. If someone relies on electricity for essential equipment, speak with the equipment provider and your utility about priority registration and backup options.
Keep a printed list of key phone numbers, because a dead phone makes a contact list useless. Agree on a meeting spot and an out-of-area contact so family members can check in even if local networks are congested.
Water and food
Emergency agencies commonly recommend at least one gallon of water per person per day for a minimum of three days. Pets need water too. Buy sealed commercial bottles or fill clean, food-grade containers, label them with a date and store them away from sunlight and chemicals.
For food, choose items that need no refrigeration and little or no cooking: canned goods, peanut butter, crackers, granola bars, dried fruit and shelf-stable milk. Pack a manual can opener. Rotate the supply a couple of times a year so nothing expires unnoticed.
- Keep refrigerator and freezer doors closed as much as possible.
- Group frozen items together, since a full freezer holds cold longer than a half-empty one.
- Freeze water bottles or ice packs in advance to help keep a cooler cold.
- Use a refrigerator thermometer, and discard perishables that warm above safe temperatures.
Light, power and communication
Battery-powered lighting is the safest option. Headlamps keep hands free, and lanterns light a whole room. Store spare batteries of the right size in a labeled bag outside the devices, and check them occasionally.
A hand-crank or battery-powered weather radio gives you official alerts when mobile networks are down. Keep several fully charged power banks and short charging cables in the same kit. As a rough rule of thumb, a modern phone battery is often in the range of 10 to 20 watt-hours, so a modest power bank can typically recharge it a few times, though real results depend on the phone and the bank’s capacity and efficiency.
Heating, cooling and shelter
In cold weather, close off unused rooms, hang blankets over drafty windows, and dress in layers. Never use a gas oven, charcoal grill or camp stove to heat living space. In hot weather, close blinds during the day, stay hydrated and move to the lowest, shadiest part of the house. Know where public cooling or warming centers are located in case conditions become unsafe.
Anyone who feels unwell from heat or cold should seek help from local emergency services rather than waiting for power to return.
The gear that earns its place
| Item | What it does | What to check before buying |
|---|---|---|
| Headlamps and lanterns | Safe, hands-free light | Battery type, runtime in the manual |
| Power banks | Recharge phones and radios | Capacity in watt-hours, port types |
| Weather radio | Official alerts without the internet | Power source options, alert channels |
| Carbon monoxide alarm | Warns of dangerous exhaust gas | Battery backup, expiration date |
| Cooler and ice packs | Extends food safety window | Insulation quality, size for your household |
| Portable generator or power station | Runs essentials | Rated output, fuel or battery capacity, safe placement |
A worked example: a three-day kit for four people
Assume four people, no pets, and a three-day target. Water at one gallon per person per day comes to 12 gallons. Food at roughly three simple meals per person per day gives 36 meals, which could be covered by about a dozen cans plus crackers, nut butter and bars. Lighting needs one headlamp per adult and one lantern per room you expect to use, so perhaps six lights in total.
For charging, if each of four phones needs two full recharges over three days and each recharge takes roughly 15 watt-hours, the total is about 120 watt-hours, and you would want a power bank or two with comfortable margin. These figures are assumptions for planning, not measurements, so scale them to your own devices.
Medications, documents and cash
Keep at least a few days of regular prescription medications in an easy-to-grab place, along with a written list of dosages and your pharmacy and doctor contacts. Ask a pharmacist about any medicine that needs refrigeration, since the safe time out of the fridge differs by product and the label or pharmacist is the right source. Store copies of identification, insurance cards and important account numbers in a waterproof pouch.
Card readers and ATMs often stop working when the grid is down, so a small amount of cash in modest bills can be useful. Fill your vehicle’s fuel tank before a forecast storm too, because gas pumps also depend on electricity.
Children, older adults and pets
Households with infants need extra formula or food, diapers and comfort items. Older adults may be more sensitive to heat and cold, so check on them early and often, including neighbors who live alone. Pets need food, water, a leash or carrier, and a recent photo in case you get separated. Small comforts such as books, cards and a battery-powered game reduce stress for kids during a long evening without screens.
If you use a generator or fuel-burning equipment
Run a portable generator outdoors only, far from doors, windows and vents, and never in a garage or basement. Let it cool before refueling, store fuel in approved containers, and do not plug a generator into a wall outlet to power the house unless a licensed electrician has installed a proper transfer switch. Carbon monoxide poisoning is a leading danger during outages, so place battery-powered alarms on each level of the home.
What to do when power returns
Switch appliances back on gradually to avoid a surge. Check food temperatures before eating anything that spent time in a warm refrigerator, and when in doubt, throw it out. Restock the kit right away, replace used batteries, and write down what you wished you had so the next plan is better.
Related guides
- Portable Power Stations For Cpap During Power Outages
- How Long Does A Portable Generator Run On A Tank Of Fuel
- Dual Fuel Generators For Hurricane Home Backup
Frequently asked questions
How much water should a household store for a power outage?
Common emergency guidance from agencies such as FEMA and the Red Cross suggests about one gallon per person per day, for at least three days, covering drinking and basic hygiene. Increase the amount for hot weather, pets, infants or anyone with special needs. Store sealed containers in a cool, dark place and check expiration dates on commercially bottled water.
How long does food stay safe in the fridge during an outage?
USDA guidance says a refrigerator keeps food cold for about four hours if the door stays closed, and a full freezer holds its temperature for roughly 48 hours, or about 24 hours if half full. Keep doors shut, use a thermometer, and discard perishable items that have been above 40 degrees Fahrenheit for more than two hours.
Are candles a good light source in a blackout?
They are generally discouraged. Open flames cause house fires during outages, especially when left unattended or placed near curtains and pets. Battery-powered flashlights, lanterns and headlamps are safer choices. If you do use any flame-based light, place it on a stable, non-flammable surface, keep it away from anything combustible, and never leave it burning when you leave the room.
Can a camp stove or grill be used indoors for heat or cooking?
No. Charcoal grills, camp stoves, gas ranges used for heating and similar devices can produce carbon monoxide, which is dangerous in enclosed spaces. Use them outdoors only, well away from windows, doors and vents. Keep a battery-powered carbon monoxide alarm in the home, and call emergency services if anyone feels dizzy, nauseated or has a headache while using fuel-burning equipment.
What should you do first when the lights go out?
Check whether the outage is limited to your home by looking at neighbors and your breaker panel. Then grab a flashlight, keep refrigerator and freezer doors closed, unplug sensitive electronics to avoid a surge when power returns, and report the outage to your utility. Leave one light switch on so you notice when service is restored.
