How to Prepare Your Home for a Power Outage: Backup Lighting, Food Safety, Devices, and Generator Risks

Quick answer: A practical power-outage plan should do five things before the lights go out: keep essential lighting available, preserve communication, protect food and temperature-sensitive supplies, identify anyone who depends on powered medical equipment, and prevent carbon-monoxide or electrical hazards from improvised backup power. Build the plan around the outage lengths that are realistic where you live. For a short interruption, flashlights, charged phones, power banks, refrigerator discipline, and a written contact list may be enough. For longer outages, add coolers and ice, alternative charging, a safe plan for heat or cold, backup power sized to essential loads, and a clear decision point for leaving the home if conditions become unsafe.

Battery-powered lanterns and flashlights are safer primary lighting choices than open flames during an outage. Image: cogdogblog / Alan Levine, Wikimedia Commons, CC BY 2.0.

Power outages are unusual because the same event can be a minor inconvenience for one household and a serious emergency for another. A two-hour outage on a mild afternoon may mean nothing more than a dark kitchen and a dead Wi-Fi router. A 12-hour outage during extreme heat can threaten people who cannot cool their home. A winter outage can disable furnaces that require electricity for controls and blowers. A multi-day outage can create food-safety problems, interfere with medications and medical devices, exhaust phone batteries, interrupt water systems, and tempt people to use generators, grills, or gas appliances in dangerous ways.

The most useful preparation is therefore not a giant shopping list. It is a household operating plan. You need to know what must keep working, how long your backup options last, which decisions depend on temperature or time, and when staying home stops being the safer choice. This guide builds that plan from first principles.

1. Start With the People, Not the Equipment

Before buying batteries or a power station, identify who in the household becomes vulnerable when electricity disappears.

Ask:

• Does anyone use a powered medical device?
• Does anyone take medication that requires refrigeration?
• Does anyone have difficulty regulating body temperature?
• Are there infants, older adults, or people with mobility limitations?
• Does anyone rely on an elevator, powered lift, adjustable bed, oxygen concentrator, infusion pump, CPAP, ventilator, or similar device?
• Do pets depend on pumps, heaters, filters, or climate control?
• Does the home depend on an electric well pump for water?
• Is the only cooking method electric?

This is the most important planning step because the consequences of an outage depend on these answers. FDA guidance for home medical devices specifically recommends planning for power loss, knowing whether a device can run on batteries or a generator, keeping instructions available, and contacting the device manufacturer or supplier when backup requirements are unclear.

Action: Create a one-page “power priority” list with names, devices, medications, and backup needs. Keep a printed copy because a phone note is less useful when the phone battery is nearly dead.

2. Build Your Plan Around Outage Duration

Not every outage requires the same response. Use time bands to avoid overreacting early and underreacting late.

0–2 hours: stabilize

Confirm that the outage is not limited to your home, turn off or unplug sensitive equipment if appropriate, switch to flashlights or lanterns, preserve phone battery, and keep refrigerator and freezer doors closed.

2–4 hours: monitor

Check official restoration estimates, indoor temperature, household medical needs, and phone battery. Avoid opening cold-storage appliances. Decide whether you need to obtain ice before local stores become crowded.

4–12 hours: transition

Food safety becomes more important because the refrigerator’s safe cold period is limited. Cooling or heating needs may become serious depending on weather. Backup charging and medical-device plans may need to activate.

12–48 hours: sustain

The household is now operating in emergency mode. Frozen-food temperature, fuel and generator safety, sanitation, communications, medication storage, and environmental conditions need active management.

Beyond 48 hours: reassess the location

If the home cannot safely maintain temperature, medical equipment, water, sanitation, or communication, moving temporarily to a safer location may be the correct decision. “Staying home” is not automatically success.

3. Know the Difference Between a Utility Outage and a House Electrical Problem

When power disappears, first determine whether the problem affects the neighborhood or only your home.

Look outside safely. Are streetlights dark? Are neighboring homes dark? Check your utility’s outage map or alert system if mobile service still works. If neighbors have power, the problem may involve your service, main breaker, meter, or internal wiring.

Do not repeatedly reset a breaker that immediately trips again. A breaker that will not stay on can indicate a fault that needs an electrician. If you smell burning, see smoke, hear arcing, or see damaged service equipment, move away and contact emergency services or the utility as appropriate.

If flooding is involved, the rules change. CDC guidance warns against operating electrical equipment while standing in water and recommends qualified help when electrical circuits or equipment have been wet.

4. Register for Utility Alerts Before You Need Them

Many utilities offer outage notifications by text, app, email, or automated call. Register in advance and verify that the account contains the correct mobile number.

Useful notifications may include:

• outage confirmation;
• estimated restoration time;
• crew assignment;
• planned outage warnings;
• public-safety shutoff notices;
• restoration confirmation.

If your area has emergency alert systems, enable those too. Ready.gov encourages households to maintain emergency communication plans and backup charging because cellular and internet systems can become congested or partially unavailable during disasters.

5. Keep a Printed Contact Sheet

A power outage is a bad time to discover that all important phone numbers exist only inside one locked smartphone.

Print:

• electric utility outage number;
• local emergency management office;
• medical-device supplier;
• pharmacy;
• doctor or home-care provider;
• family contacts;
• landlord or building manager;
• electrician;
• generator or HVAC service contact if relevant;
• insurance contact.

Keep the sheet with the emergency kit and give a copy to any caregiver who may be present during an outage.

6. Make Battery Lighting the Default

Use battery-powered flashlights and lanterns as your normal outage lighting. CPSC and CDC both recommend flashlights over candles because candles create an additional fire hazard at exactly the time visibility is poor and emergency services may already be busy.

Place lights where they can be found in darkness:

• beside beds;
• near the main entrance;
• in the kitchen;
• near the electrical panel;
• in the emergency kit;
• near stairs.

A headlamp is especially useful because it leaves both hands free for carrying supplies, checking a breaker panel, helping another person, or managing a medical device.

Test: Turn off the lights one evening and see whether every household member can reach a flashlight without using a phone screen.

7. Store Batteries as a System, Not a Drawer of Unknown Cells

Loose batteries spread across a junk drawer are not a dependable emergency supply.

Store spare batteries in their original packaging or a purpose-built organizer. Separate new from used. Label rechargeable cells if several sets rotate through devices. Check the stock twice a year for leakage, corrosion, or expired disposables.

For rechargeable lanterns and flashlights, add them to a recurring charging routine. A rechargeable emergency light at 8% charge is not really emergency lighting.

8. Use Open Flames Only as a Last Resort

If you use candles despite safer alternatives being unavailable, place them in stable holders on noncombustible surfaces, far from curtains, paper, children, pets, and walking paths. Never leave them unattended.

But do not build your preparedness plan around candles. Battery lanterns are easier to move, do not consume oxygen, and cannot ignite nearby fabric.

9. Create a Phone-Battery Conservation Mode

Your phone is a flashlight, map, radio substitute, utility portal, banking device, and contact directory. During a long outage, treat its battery as emergency inventory.

When the outage begins:

• lower screen brightness;
• use battery saver mode;
• disable unnecessary background apps;
• turn off Bluetooth if not needed;
• use Wi-Fi only if the network is powered;
• avoid streaming video;
• use text instead of long calls when networks are congested;
• download key information while service is available.

If you have multiple phones, do not run all of them down at once. Assign one as the primary communication device and keep another charged as a reserve.

10. Size Power Banks by Real Use, Not Marketing Numbers

A power bank is one of the simplest backup-power tools for communication, but capacity labels do not translate perfectly into phone charges because conversion losses and device voltage matter.

Instead of assuming a specific number of charges, test your own setup. Charge your normal phone from a fully charged power bank and record how much capacity remains. Repeat with the cables you actually plan to use.

Keep at least one cable for every essential device in the emergency kit. A full battery bank without the right cable is stored energy you cannot access.

Power banks are useful for communications, but they should be tested with the exact phones and cables your household depends on. Image: Mk2010 / Malcolm Koo, Wikimedia Commons, CC BY-SA 4.0.

11. Keep Power Banks Charged Without Aging Them Thoughtlessly

Follow the manufacturer’s storage instructions. Lithium-ion products do not all have identical recommendations for long-term storage percentage or temperature.

A simple household system is to check emergency power banks every one to three months. Recharge if needed, inspect for swelling or damage, and verify that cables still work.

If a battery pack is swollen, cracked, unusually hot, leaking, or damaged after impact, stop using it and follow the manufacturer’s or local battery-disposal guidance.

12. Consider a Portable Power Station Only After You Define Loads

Portable battery power stations can run devices that ordinary USB power banks cannot, but capacity is finite.

Before buying one, list essential loads:

• phones;
• router/modem;
• medical device;
• small fan;
• LED lighting;
• laptop;
• refrigerator, if the unit can support its starting and running requirements.

Record each device’s power requirements from its label or documentation. Add the watts used by simultaneous loads and estimate how long you need them to run. A system sized for phone charging is completely different from one intended to power a refrigerator or medical equipment.

Do not assume a battery power station is compatible with a life-sustaining medical device. Confirm with the device manufacturer or supplier.

13. Treat the Refrigerator as a Thermal Battery

The moment power fails, the refrigerator becomes an insulated cold box whose useful life depends heavily on how often you open it.

FDA states that an unopened refrigerator will keep food cold for about four hours. A full freezer can hold temperature for about 48 hours, while a half-full freezer may hold for about 24 hours, assuming the door stays closed.

So the first refrigerator rule is simple: do not browse.

Before opening, decide exactly what you need. Remove several items in one opening rather than opening the door every 15 minutes.

14. Install Appliance Thermometers Before the Outage

Put one appliance thermometer in the refrigerator and one in the freezer. FDA recommends keeping the refrigerator at or below 40°F (4°C) and the freezer at 0°F (-18°C) during normal operation.

Thermometers matter because after a prolonged outage you need evidence about temperature, not guesses based on whether food “still feels cool.”

Place thermometers where they can be read quickly without unloading shelves.

15. Freeze Water Containers Ahead of Forecasted Outages

If severe weather or a planned shutoff is expected, freeze containers of water or gel packs in advance. FDA recommends frozen water and gel packs because they help maintain safe temperatures and can be moved into coolers if necessary.

Leave expansion space in containers so freezing water does not split them.

Group frozen food together. A full, tightly packed freezer generally warms more slowly than a sparse one because frozen items help keep each other cold.

16. Move Food to Coolers at the Right Time

If the outage is likely to exceed the refrigerator’s roughly four-hour cold window, prepare coolers with ice or frozen gel packs.

Do not automatically empty the refrigerator during the first hour. Opening the door and transferring food to a warm cooler can reduce safety rather than improve it.

Use the cooler when you have enough ice and a plan to hold perishables at 40°F (4°C) or below.

17. Know What to Discard After a Long Outage

FDA advises discarding refrigerated perishable foods such as meat, poultry, seafood, milk, eggs, and leftovers if they have been above 40°F for too long. The agency’s power-outage guidance specifically emphasizes the four-hour refrigerator window when the door remains closed and temperature-based decisions after restoration.

Do not rely on smell or appearance. Dangerous bacterial growth does not always make food smell spoiled.

When in doubt about a high-risk perishable and you cannot verify safe temperature history, discarding it is safer than trying to “cook away” uncertainty.

18. Evaluate Frozen Food Package by Package

When power returns, frozen food may still be safe even if it has softened.

FDA says food that still contains ice crystals or is at 40°F or below can be safely refrozen or cooked. Quality may decline after thawing and refreezing, but safety is the first question.

Use a food thermometer for questionable packages when appropriate. Do not use the outside temperature of the freezer as proof that every food stayed safe.

19. Keep a Manual Can Opener

Emergency food that requires an electric opener is poorly chosen emergency food.

Keep a manual opener with shelf-stable food. Choose items your household actually eats and can prepare without electricity or with your planned safe cooking method.

Rotate stock into normal meals so the emergency supply does not become a museum of expired cans.

20. Avoid Indoor Combustion for Cooking

Never bring charcoal grills, gasoline appliances, propane camping stoves, or similar outdoor combustion devices into the home, garage, basement, tent, or other enclosed or partially enclosed space.

CDC warns that carbon monoxide from fuel-burning devices can accumulate indoors and cause sudden illness or death.

If your emergency food plan requires hot meals, create a safe outdoor cooking plan appropriate to the equipment and local conditions, or stock enough ready-to-eat food that cooking is optional.

21. Do Not Heat the Home With a Gas Oven

CDC explicitly warns against using a gas range or oven as a space heater during a power outage.

It creates carbon-monoxide and fire risks and can cause dangerous indoor air conditions.

If the home becomes too cold, use safe heating equipment designed for the purpose and operated according to its instructions, or move to a heated location.

22. Plan for Heat as Seriously as Cold

Outages during hot weather can disable air conditioning and fans. Indoor temperatures can rise quickly, especially in upper-floor apartments, poorly shaded homes, and humid climates.

Plan cooling options:

• battery-powered fans;
• shade curtains or blinds;
• a cooler lower level if safe;
• hydration;
• light clothing;
• public cooling centers;
• relatives or friends with power;
• a vehicle with air conditioning used outdoors, never idling in an enclosed garage.

People at higher risk from heat should have a low threshold for leaving a hot home rather than waiting until symptoms appear.

23. Create a Temperature Exit Rule

Households make poor decisions when they wait until everyone is exhausted.

Choose conditions that trigger relocation. For example:

• the home becomes too hot or cold for a vulnerable household member;
• a medical device backup reaches a defined remaining runtime;
• medication can no longer be stored safely;
• water supply fails;
• the outage is expected to last beyond the household’s fuel or battery plan;
• authorities issue an evacuation or safety instruction.

The exact temperature threshold may need medical advice for vulnerable individuals. The important point is to decide before the emergency becomes desperate.

24. Identify Medical Devices That Cannot Simply “Wait”

FDA urges people who depend on medical devices to plan ahead for electrical interruptions. This includes understanding battery duration, backup devices, alarms, settings, charging methods, and emergency contacts.

Create a device sheet for each critical device:

• device name and model;
• normal power source;
• battery type;
• expected battery runtime;
• backup battery location;
• approved charging or generator method;
• supplier phone number;
• manufacturer support number;
• what to do if the device stops;
• where to go if backup power fails.

Do not estimate a life-sustaining device’s runtime from memory.

25. Notify Relevant Services When Medical Power Is Critical

FDA advises people who use power-dependent medical devices to notify the electric company and local emergency or fire services as appropriate.

Some regions have voluntary registries or priority-notification programs for customers with medical needs. These programs do not guarantee uninterrupted power, but they may improve communication and planning.

Register before an outage. During a large disaster, administrative systems may be overwhelmed.

26. Have a Written Medication-Refrigeration Plan

Not all refrigerated medications have the same storage limits.

Ask the pharmacist or manufacturer:

• required storage temperature;
• how long the medication may remain at room temperature;
• whether freezing damages it;
• whether direct contact with ice is acceptable;
• how to transport it in a cooler;
• how to tell if it must be replaced.

Do not place medication directly against dry ice or freezer packs unless instructions allow it. Freezing can damage some products just as heat can.

27. Recheck Medical-Device Settings After Power Returns

FDA warns that some medical devices may reset to default settings after power interruption or fluctuating power.

When electricity returns:

• inspect the device and cord for moisture or damage;
• verify settings;
• check alarms;
• run self-tests if instructed;
• confirm normal operation before assuming the problem is over.

If the device behaves unexpectedly, contact the manufacturer, supplier, or health-care provider.

28. Understand Why Portable Generators Are a Special Hazard

Portable generators produce carbon monoxide, a colorless, odorless gas that can kill without warning. CPSC’s 2026 safety guidance states that gasoline-powered generators can produce enormous amounts of CO and should never be operated inside a home, garage, basement, crawlspace, shed, porch, or carport.

Opening a garage door is not enough.

CDC and CPSC recommend operating portable generators outside, at least 20 feet from the home, with exhaust directed away from windows, doors, vents, and neighboring occupied buildings.

Portable generators must be operated outdoors and far from windows, doors, and vents; never use one in a garage, basement, shed, porch, or carport. Image: TaurusEmerald, Wikimedia Commons, CC BY-SA 4.0.

29. Install Carbon-Monoxide Alarms Before Generator Season

CPSC recommends battery-operated CO alarms or alarms with battery backup on every level of the home and outside sleeping areas. Interconnected alarms provide additional warning because one detector can alert the whole home.

Test alarms according to the manufacturer’s schedule and replace units at the end of their rated service life.

A CO alarm is not permission to operate a generator too close to the home. It is a backup layer.

30. Learn the Symptoms of Carbon-Monoxide Poisoning

CDC lists common symptoms including headache, dizziness, weakness, nausea, vomiting, chest pain, and confusion. High exposures can cause loss of consciousness and death.

If a CO alarm sounds or multiple people develop unexplained headache, dizziness, nausea, or confusion during generator or fuel-burning equipment use, move to fresh air immediately and contact emergency services.

Do not stay inside trying to locate the source first.

31. Never Backfeed a House Through a Wall Outlet

Do not connect a portable generator to household wiring by plugging it into a wall receptacle with an improvised male-to-male cord.

Backfeeding can energize utility lines that crews expect to be dead and can create severe fire and electrocution hazards.

If you want a generator to power selected household circuits, use a properly installed transfer switch, interlock system, or other code-compliant equipment designed for that purpose and installed by a qualified professional where required.

32. Size a Generator to Loads and Starting Current

Generators have running-watt and surge or starting limits. Motors in refrigerators, pumps, furnaces, and some tools can draw much more power briefly when starting.

Make a load sheet with:

• running watts;
• starting watts;
• whether the device will run continuously;
• priority level;
• plug type;
• extension-cord requirement.

Do not size backup generation solely by adding nameplate running watts. Follow the generator manufacturer’s sizing method or use professional help for whole-home or critical-circuit systems.

33. Use Outdoor-Rated Cords Correctly

If appliances are connected directly to a portable generator, use heavy-duty outdoor-rated extension cords sized for the load and distance.

Inspect cords for cuts, crushed insulation, damaged ends, or overheating. Do not run cords through standing water. Do not create trip hazards across dark walkways.

CDC advises keeping the generator more than 20 feet away, so cord length is part of safe placement rather than an afterthought.

34. Protect Generators From Weather Without Enclosing Them

Generators and electricity do not mix with rain. At the same time, putting a running generator in a shed or garage to keep it dry creates deadly CO risk.

Follow the manufacturer’s exact weather instructions. CPSC notes that some products may permit a specifically rated noncombustible generator tent while others may require waiting until precipitation passes.

Do not improvise an enclosure that traps exhaust.

35. Refuel Only After Shutdown and Cooling

CPSC warns not to refuel a generator while it is running. Shut it down and allow it to cool before adding fuel.

Spilled gasoline on a hot engine can ignite.

Store fuel in approved containers and in locations permitted by local fire rules and the fuel/container manufacturer. Fuel storage is not a “more is always better” problem because fire risk, degradation, and legal limits matter.

36. Run the Generator Before the Emergency

A generator that has not started in two years is not dependable backup power.

Follow the manufacturer’s maintenance schedule for test runs, oil, filters, battery, fuel system, and storage.

During a non-emergency test:

• start it outdoors in the safe operating location;
• connect representative loads;
• verify extension cords;
• measure practical fuel use;
• confirm everyone knows shutdown procedures.

Never wait for a storm to learn how the choke, fuel valve, breaker, or CO shutdown system works.

37. Treat Solar and Battery Systems as Energy Budgets

Solar panels do not automatically provide power when the grid fails. Many grid-tied systems shut down during outages unless they include compatible islanding and storage equipment.

If you have rooftop solar, ask the installer exactly what remains powered when the grid is down.

For portable solar panels and battery stations, sunlight, panel orientation, weather, temperature, and load affect recharge time. Test your system in normal conditions and record realistic results.

38. Decide Which Internet Equipment Is Worth Backing Up

A modem and router may continue providing internet during an outage if the provider’s network remains operational, but that is not guaranteed.

Measure their combined power draw and decide whether keeping internet online is worth using battery capacity. For remote workers or households with poor cellular service, the answer may be yes.

For others, preserving phone power may matter more than preserving Wi-Fi.

39. Download Offline Information Before Severe Weather

When an outage is forecast, download:

• offline maps;
• insurance documents;
• medical-device manuals;
• medication instructions;
• emergency contacts;
• utility account information;
• local shelter locations;
• important reservation or travel documents.

A cloud document you cannot open without internet is not fully available during an emergency.

40. Keep a Battery or Hand-Crank Radio if Local Alerts Matter

Cellular networks usually work through many outages but can become overloaded, lose backup power, or fail in damaged areas.

A battery or hand-crank radio provides another channel for official information. Store it with the emergency kit and test it periodically.

Know which local radio stations carry emergency information.

41. Plan Water Separately From Electricity

City water may continue during an outage, but homes with electric well pumps can lose running water immediately. High-rise buildings may also depend on pumps.

Know whether electricity is required for your normal water supply.

If it is, maintain emergency drinking water and a sanitation plan. Do not wait until the power fails to discover that no faucet works.

42. Fill Water Containers Before a Forecasted Outage When Appropriate

If local authorities warn of a severe storm and your water system may fail, fill clean containers in advance and follow official local guidance.

Do not fill random chemical containers or containers that previously held fuel or hazardous substances.

Store drinking water separately from water intended only for flushing or cleaning.

43. Understand Electric Garage Doors During an Outage

Automatic garage-door openers normally have a manual release mechanism. Learn how yours works before the power fails.

Read the opener manual. The door can be heavy, especially if a spring system is damaged. Do not disconnect the opener and try to lift a door that feels abnormally heavy or unbalanced.

Keep vehicles positioned so they can be removed manually if necessary.

44. Know Which Doors and Locks Depend on Electricity

Smart locks, access-control systems, electric gates, apartment entry systems, elevators, and intercoms may behave differently without power.

Test backup keys, battery compartments, and manual release procedures.

Never store the physical backup key only inside the space that the electronic lock controls.

45. Plan for Sump Pumps and Basement Flooding

If a sump pump protects the basement, the pump itself is an essential load.

Options include battery-backup sump pumps, generator power, water-powered backup pumps where appropriate and permitted, and high-water alarms.

Test the primary and backup systems according to manufacturer instructions. A backup battery that has exceeded its service life can create false confidence.

46. Consider Refrigeration Priority in Generator Planning

Refrigerators do not necessarily need continuous generator power if they can maintain safe temperature between runs, but operating patterns depend on appliance performance, ambient temperature, and food temperature.

Do not use a generic internet schedule such as “one hour every four hours” without monitoring actual temperature.

Use appliance thermometers. Temperature is the control variable.

47. Make a “Do Not Plug In” List

During an outage, people may connect unnecessary high-load appliances simply because a generator or power station has an outlet.

Put a label on backup equipment listing nonessential high-load devices to avoid unless capacity was specifically planned for them, such as:

• electric water heaters;
• electric dryers;
• electric ranges;
• large resistance heaters;
• hair dryers;
• space heaters on small battery systems;
• large power tools.

This prevents accidental overload and preserves runtime for essential loads.

48. Unplug or Protect Sensitive Electronics as Appropriate

Power restoration can involve voltage irregularities. If the outage is associated with storms, damaged infrastructure, or repeated flickering, unplugging sensitive electronics can be sensible until service stabilizes.

Use quality surge protection where appropriate, but understand that no plug-in protector can make unsafe wiring or severe utility faults harmless.

After restoration, reconnect loads gradually rather than switching everything on simultaneously.

49. Do Not Touch Downed Lines

A downed utility line may still be energized, and electricity can travel through wet ground, fences, vehicles, branches, and other conductive objects.

Stay well away and contact the utility or emergency services. Do not attempt to move a line with a broom, branch, rope, or tool.

Assume every downed line is live.

50. Avoid Standing Water Around Electrical Equipment

If floodwater reaches electrical outlets, panels, appliances, or wiring, do not enter the water to reach the breaker.

CDC advises qualified assistance when electrical circuits or equipment have gotten wet and the main power cannot be safely accessed.

Equipment exposed to floodwater may require inspection or replacement before re-energizing.

51. Create a Nighttime Safety Layout

Darkness turns ordinary clutter into trip hazards.

Before storm season:

• clear hallways;
• keep stairs free of storage;
• place a light at top and bottom of stairs;
• use nightlights with battery backup if desired;
• keep pet items out of paths;
• store shoes beside beds if broken glass or storm debris is possible.

FDA notes that poor lighting can increase home injury risk, especially for people who already have mobility limitations.

52. Give Children Simple Outage Rules

Children do not need a technical lecture. Give them repeatable rules:

• do not touch candles, generators, cords, or the electrical panel;
• do not open the refrigerator for snacks without asking;
• use the assigned flashlight;
• stay away from downed wires;
• tell an adult if a CO alarm or smoke alarm sounds;
• know the family meeting place.

Practice these rules once when there is no emergency.

53. Include Pets in the Plan

Pets may be affected by heat, cold, aquarium pump failures, electrically heated habitats, automatic feeders, and water systems.

Store food, water, medication, carriers, leashes, and records. If a reptile, fish, bird, or other animal depends on specific temperature or aeration, develop a species-appropriate backup plan before an outage.

Do not use unsafe combustion heaters indoors for pets.

54. Keep Some Cash Available

Card terminals, ATMs, payment systems, and local internet connections may fail during a widespread outage.

A modest amount of cash in small denominations can help with local purchases if stores are operating manually.

Store it securely and include it in your emergency inventory.

55. Fill the Vehicle Before a Forecasted Major Event

Fuel stations may lose power or experience long lines during regional outages.

If a severe storm or planned shutoff is forecast, keeping the vehicle reasonably fueled increases evacuation and charging options.

Never run the vehicle in an attached garage, even with the garage door open. CDC warns that vehicle exhaust can cause CO buildup.

56. Use the Vehicle for Charging Safely

A vehicle can charge phones and small devices, but the engine must be outdoors in a safe open location.

Do not idle a gasoline vehicle in a garage, carport, or near open windows.

Monitor fuel level and avoid draining the starter battery by leaving accessories on with the engine off longer than the vehicle can support.

57. Build an Outage Kit in One Reachable Location

Your kit should not be scattered across five rooms.

Include:

• flashlights and headlamps;
• spare batteries;
• power banks and cables;
• battery radio;
• manual can opener;
• printed contacts;
• basic first aid;
• appliance thermometers;
• medical-device backup notes;
• nonperishable food;
• water;
• cash;
• copies of key instructions.

Store the kit where it remains accessible if the garage door will not open or one part of the home is damaged.

58. Conduct a Two-Hour Practice Outage

The best way to find weaknesses is to test the plan.

On a safe day with mild weather, switch off selected nonessential circuits or simply agree not to use grid-powered conveniences for two hours. Do not disable safety systems or essential medical equipment.

Test:

• how quickly lights are found;
• phone charging;
• router backup;
• manual garage access;
• meal preparation;
• communication;
• medical-device backup procedures;
• whether important supplies are reachable.

Write down every failure. The drill is successful when it reveals problems.

59. Test the Plan in Darkness

A daytime drill does not reveal nighttime problems.

Do a separate 15-minute lights-out exercise after sunset. Walk from bedroom to bathroom, stairs, entrance, and emergency kit using only planned backup lighting.

If anyone uses a mobility aid, include it.

60. Track Backup Runtime With a Simple Table

Create a sheet like this:

Device	Normal Load	Backup	Tested Runtime	Priority
Primary phone	Daily communication	20,000 mAh power bank	Test at home	Critical
Router	Internet	UPS	Test at home	Medium
Medical device	Health support	Manufacturer-approved backup	Per instructions	Critical
LED lantern	Lighting	AA batteries	Test annually	High

This table converts vague confidence into measurable capability.

61. Create a Power-Restoration Sequence

When electricity returns, do not immediately assume everything is normal.

Use this sequence:

1. Confirm utility restoration appears stable.
2. Check for burning smell, sparks, water intrusion, or damaged service equipment.
3. Verify refrigerator and freezer temperatures.
4. Check medical-device settings and alarms.
5. Reconnect sensitive electronics gradually.
6. Recharge emergency batteries immediately.
7. Refuel or maintain backup equipment only after safe shutdown.
8. Record food losses if insurance or assistance documentation may apply.
9. Reset clocks, alarms, and smart-home schedules.

62. Do Not Rush to Refill the Refrigerator With Warm Food

After a long outage, first verify that the refrigerator is cooling properly.

Use the appliance thermometer. If you moved food to coolers, keep it safely cold until the refrigerator returns to 40°F (4°C) or below.

Adding large amounts of warm food immediately can slow recovery.

63. Recharge in Priority Order After Restoration

Power can fail again during storm recovery.

Recharge:

1. medical-device backups;
2. phones;
3. power banks;
4. lanterns and flashlights;
5. radio;
6. laptops;
7. optional devices.

Do not wait until morning if the grid is unstable and you have been given a restoration window.

64. Restock Ice, Batteries, and Fuel After the Event

Emergency supplies are often consumed during the outage and then forgotten.

Within 48 hours of stable restoration, create a restock list:

• batteries used;
• food consumed;
• water consumed;
• fuel used;
• medication supplies;
• damaged cables;
• expired items discovered;
• generator maintenance due.

An emergency kit is not complete again until consumables are replaced.

65. Review What Failed While the Memory Is Fresh

Hold a 10-minute household review:

• What ran out first?
• What could not be found?
• Which device used more power than expected?
• Which food was lost?
• Did official alerts reach everyone?
• Was the home too hot or cold?
• Did the generator or battery system work as expected?
• What should be stored somewhere else?

Update the plan rather than merely congratulating yourself that the outage is over.

66. Worked Example: Four-Hour Evening Outage

A household of two adults loses power at 7 p.m. in mild weather. No medical devices require electricity.

Minute 1–10: They confirm the neighborhood is dark, report the outage through the utility app, and switch to LED lanterns.

First hour: Phones move to battery saver. The refrigerator stays closed. Dinner is made from shelf-stable food rather than opening the freezer repeatedly.

Second hour: Utility estimates restoration by 11 p.m. They do not start the generator because no critical load justifies it.

Fourth hour: Power returns. The refrigerator has remained closed, so the household follows FDA guidance and continues normal refrigeration. Power banks and lanterns are recharged.

The lesson is that preparation can reduce equipment use. Owning a generator does not mean it should run during every outage.

67. Worked Example: 18-Hour Summer Outage

A family loses power during hot weather.

First four hours: Refrigerator doors stay shut. Phones use power banks. Battery fans are moved to the warmest occupied room.

Hour four: The family prepares coolers with ice and moves priority perishables because restoration is now estimated for the next morning.

Hour six: Indoor temperature continues rising. An older adult in the home becomes uncomfortable. The family’s preplanned exit rule activates, and they move to a relative’s air-conditioned home.

Next morning: One adult returns after power restoration, checks refrigerator temperature, evaluates food using FDA guidance, recharges backups, and then brings the family home.

The plan succeeded because it prioritized people over protecting the house or food.

68. Worked Example: Medical Device With Backup Battery

A household member uses an electrically powered medical device with an internal battery.

Before outage season, the family has documented the device model, supplier, battery runtime, approved charging method, and evacuation destination. The utility and local emergency program have been notified where available.

When power fails, they record the exact outage time and battery percentage. They do not guess runtime. A manufacturer-approved battery backup is connected according to instructions.

When the remaining backup reaches the household’s preplanned trigger, they relocate to a powered facility rather than waiting for a low-battery alarm.

After utility power returns, they verify device settings because FDA warns that power interruption can cause some devices to reset.

69. Worked Example: Generator for Refrigerator, Sump Pump, and Phones

A homeowner uses a portable generator only for three priority loads.

The generator is set outdoors more than 20 feet from the house with exhaust facing away from openings. CO alarms are active inside.

The sump pump receives first priority because flooding could cause immediate damage. The refrigerator is powered as needed based on temperature. Phones charge during generator runs.

The homeowner does not connect the generator to a wall outlet and does not run it in the garage when rain starts. Instead, the manufacturer-approved weather procedure is followed.

Fuel is added only after shutdown and cooling.

70. Troubleshooting Common Power-Outage Planning Problems

“My phone died even though I had a power bank.”

The bank may have been partially discharged, the cable may have failed, or phone use was too heavy. Test the bank monthly or quarterly and measure actual performance.

“The refrigerator warmed faster than expected.”

Frequent door opening, high room temperature, poor door seals, low food mass, or an appliance problem may be factors. Use thermometers rather than relying only on generic time estimates.

“The generator keeps tripping its breaker.”

The load may exceed capacity or a connected device or cord may have a fault. Disconnect loads and follow the generator’s troubleshooting instructions. Do not bypass protection.

“The generator cannot reach the house with my extension cord.”

The safe placement distance comes first. Obtain an appropriately rated longer cord rather than moving the generator closer to doors or windows.

“We opened the freezer several times. Is the 48-hour rule still valid?”

The FDA time estimates assume the door stays closed. Use actual temperature and package condition rather than assuming the full time window still applies.

“The power came back but the medical device looks different.”

Stop and verify settings, alarms, and manufacturer instructions. FDA warns that some devices can reset after power interruptions.

“We do not have money for a generator.”

A generator is not mandatory for every household. Prioritize lighting, communication, water, food planning, temperature safety, and relocation options. A modest plan using lanterns, power banks, ice, and a place to go can be safer than an improperly used generator.

“Our apartment does not allow generators.”

Use battery-based backup systems, charged power banks, safe lighting, and a relocation plan. Never operate a fuel-burning generator on an apartment balcony or inside a building.

“Our power station says it can run the refrigerator, but it shuts down.”

The refrigerator’s starting surge may exceed the power station’s inverter limit even if running watts are within range. Check both continuous and surge ratings and the appliance specifications.

“We keep forgetting to charge emergency devices.”

Add a recurring calendar reminder every one to three months and pair the check with smoke/CO alarm testing or another home-maintenance routine.

71. A 30-Minute Power-Outage Preparedness Setup

If you have no plan today, do this:

Minutes 0–5: Find every flashlight and lantern. Replace or charge batteries.

Minutes 5–10: Charge power banks and gather charging cables into one bag.

Minutes 10–15: Put thermometers in the refrigerator and freezer.

Minutes 15–20: Write utility, medical, family, and emergency contacts on paper.

Minutes 20–25: Identify who or what in the home fails first without electricity: medical equipment, well pump, sump pump, cooling, heating, internet, refrigerator.

Minutes 25–30: Decide where you would go if the home becomes unsafe to occupy.

This simple half-hour plan already reduces several major risks.

72. A Full Household Checklist

• Utility outage alerts are enabled.
• Printed contacts are current.
• Flashlights and lanterns are easy to reach.
• Spare batteries are organized.
• Power banks are charged and tested.
• Every essential device has the correct cable.
• Refrigerator and freezer have thermometers.
• Coolers and ice packs are available.
• Manual can opener is stored with emergency food.
• Medical-device backup plan is documented.
• Medication refrigeration requirements are known.
• CO alarms work on every required level and near sleeping areas.
• Generator location is outdoors and at least 20 feet from openings.
• Generator cords are outdoor-rated and correctly sized.
• No backfeeding setup exists.
• Fuel is stored legally and safely.
• Water backup accounts for electric well or building pumps.
• Manual garage-door procedure is understood.
• Offline maps and key documents are downloaded.
• Radio works and batteries are available.
• Children know basic outage rules.
• Pet needs are included.
• Exit conditions are defined.
• A two-hour practice outage has been completed.
• Backup systems are inspected after each real outage.

Frequently Asked Questions

How long will food stay safe in a refrigerator without power?

FDA says an unopened refrigerator will keep food cold for about four hours. Keep the door closed as much as possible and use a thermometer to guide decisions after longer outages.

How long does a freezer stay cold during an outage?

A full freezer may maintain temperature for about 48 hours and a half-full freezer for about 24 hours if the door remains closed, according to FDA guidance. Actual results depend on conditions, so check temperature when power returns.

Can I run a generator in the garage with the door open?

No. CDC and CPSC warn never to run a portable generator in a garage, even with doors or windows open. Operate it outdoors at least 20 feet from the home, with exhaust directed away from windows, doors, and vents.

Can I put a generator under a porch or carport?

CPSC warns that porches and carports are too close to the home for safe portable-generator operation. Follow the manufacturer’s instructions and the 20-foot outdoor separation guidance.

Should I use candles during a blackout?

Battery-powered flashlights and lanterns are safer primary lighting choices. CPSC recommends flashlights instead of candles during outages because candles add fire risk.

Do rooftop solar panels work during a blackout?

Not necessarily. Many grid-tied solar systems shut down when the grid fails unless they include compatible battery storage and equipment designed to operate independently. Ask your installer exactly what remains powered during an outage.

Can a portable power station run a refrigerator?

Some can, but both continuous running watts and starting surge must be within the power station’s ratings, and battery capacity determines runtime. Test the exact refrigerator and power station before relying on the combination.

What should I do first when power comes back?

Check for obvious electrical damage, verify refrigerator/freezer temperature, confirm medical-device settings, and recharge emergency batteries. Reconnect sensitive electronics gradually if the supply appears stable.

What if someone depends on an electrically powered medical device?

Contact the device manufacturer or supplier before emergencies to document backup power and battery requirements. FDA also advises notifying relevant utility and emergency services and having a relocation plan if backup power becomes insufficient.

Can I use my car to heat or cool the family during an outage?

A vehicle may provide temporary climate control only when it is operated outdoors in a safe open location. Never idle a vehicle in an attached garage or other enclosed or partially enclosed area because of carbon-monoxide risk.

Conclusion: Plan for the First Failure, Then the Next One

A resilient power-outage plan does not start with the largest generator you can buy. It starts by identifying what fails first in your household and how much time you have before that failure becomes dangerous.

Protect people first. Then preserve communication, lighting, food, water, and essential equipment. Use thermometers instead of guessing about refrigerated food. Use battery lighting instead of open flames. Treat medical-device power as a documented requirement. If you use a portable generator, operate it outdoors at least 20 feet from the home, keep exhaust away from openings, use working carbon-monoxide alarms, and never backfeed household wiring.

The most important mistake to avoid is waiting until the outage is already long before deciding what the household will do. Set an exit rule in advance. If the home becomes too hot, too cold, medically unsafe, flooded, or unable to provide essential water or power, leaving for a safer location is part of preparedness—not a failure of it.

If you want one useful action today, charge every power bank, place a thermometer in the refrigerator and freezer, and write down the first three things in your home that cannot safely remain without electricity. Those three answers will tell you what the rest of your outage plan needs to solve.

Sources and Further Reading

• Ready.gov — Preparedness and Power Outage Resources
• CDC — What to Do to Protect Yourself During a Power Outage
• CDC — Carbon Monoxide Poisoning Basics
• U.S. Consumer Product Safety Commission — Carbon Monoxide Safety
• CPSC — 2026 Generator and Heating Safety Guidance
• FDA — Power Outages: Key Tips for Consumers About Food Safety
• FDA — Food and Water Safety During Power Outages and Floods
• FDA — Medical Devices and Natural Disasters
• FDA — Home Health and Consumer Devices: Power Outages

Image Credits

• “Working By Emergency Light (4252388319).jpg” — cogdogblog / Alan Levine, Wikimedia Commons, CC BY 2.0.
• “Charging a smartphone with a USB power bank.jpg” — Mk2010 / Malcolm Koo, Wikimedia Commons, CC BY-SA 4.0.
• “DeWalt Gas-Powered Portable Generator.jpg” — TaurusEmerald, Wikimedia Commons, CC BY-SA 4.0.