THE FIELD GUIDE / Power & warmth
How to Prepare for a Winter Power Outage
THE PRACTICAL ANSWER
To prepare for a winter power outage, develop an emergency plan, gather essential supplies, weatherproof your home, identify safe ways to stay warm, prepare your vehicle, and consider the needs of vulnerable people and pets. Use only official safety information when considering alternate heat sources or generators, and monitor weather updates closely. [1] [2] [4]
Why Prepare for a Winter Power Outage?
A winter power outage can last from a few hours to several days, potentially resulting in unsafe temperatures, limited communication, loss of light, food spoilage, and risks to vulnerable groups. Preparing before a storm improves your ability to stay safe, warm, and self-sufficient during such emergencies. The steps outlined here follow US government guidance but should be considered alongside local advice and your specific needs. [1] [2] [4]
Make a Plan and Stay Informed
Begin by making a written emergency and communication plan for your household. This should specify how household members will stay in touch, where to meet if separated, and what actions to take if power remains out for an extended period. Plan for everyone in your home—including those with medical needs, children, older adults, people with disabilities, and pets. Review and update your plan before winter each year. [1]
Keep a close eye on weather reports during the winter season. Early alerts provide additional time to check supplies and secure your property. [1]
Prepare Your Home
Protect your home against winter conditions that can be hazardous during a power outage. Insulating water lines along exterior walls can help prevent freezing pipes. Caulk and weather-strip doors and windows to retain heat. Check your heating system and chimney, and service them annually by a qualified technician. If you use a fireplace or wood stove, keep it well maintained and ensure that all combustion devices are properly vented outside. [1] [4]
Install battery-operated or battery-backup smoke and carbon monoxide detectors, particularly if you plan to use any combustion-based heat sources during outages. Keep a fire extinguisher easily accessible and make sure everyone knows how to use it. [1] [4]
For older adults, place an easy-to-read thermometer in a visible indoor position and check the temperature regularly during cold weather. [1] [4]
Essential Emergency Supplies
Gather supplies to last several days—ideally enough for all household members and pets. Items should include potable water, non-perishable ready-to-eat food, necessary medications, and a first aid kit. Flashlights, headlamps, battery-powered or hand-crank lanterns, and ample spare batteries in common sizes are essential. If you rely on medical devices that require electricity, consult medical providers in advance about backup options. [2] [4]
A battery-powered or hand-crank weather radio allows you to receive emergency alerts if your main communication channels are down. Warm clothes, sleeping bags, blankets, and emergency (space) blankets are also important for keeping warm indoors if the heat goes out. [2] [4]
Backup power sources may include power banks, car chargers, and, where appropriate, a generator. Follow safety rules strictly: Only use generators outdoors, at least 20 feet from any window or opening, and never use gas-powered devices inside your home. [2]
Staying Warm and Safe Without Power
If the power goes out, staying warm and safe is a top priority. Use alternative heat sources according to official safety guidance. Never use the stove or grill for heating indoors, and avoid candles if possible as they present a fire risk. [4]
Always ensure proper ventilation for any combustion device. Do not substitute fuels or improvise with unapproved appliances. For indoors, rely on portable space heaters with automatic safety switches, blankets, and warm clothing. [4]
| Item | Official Safety Guidance | Recommended Use (unit or detail) | Sources |
|---|---|---|---|
| Item | Official Safety Guidance | Recommended Use (unit or detail) | [2] [4] |
| Battery-powered flashlights/lanterns | Preferred for indoor lighting; avoid candles. | Multiple units, plus spare batteries | [4] |
| Portable generators | Use outdoors only, 20+ feet from windows/doors; carbon monoxide risk. | As needed; follow manufacturer instructions and local laws | [2] [4] |
| Space heaters (electric/oil/kerosene) | Follow manufacturer guidance. Check legality for kerosene. Never use stoves/ovens for heating. | One unit per allowed room; keep clear of flammable materials | [4] |
| Fireplaces and wood stoves | Annual chimney inspection; use only dry firewood; ensure venting. | Not established | [4] |
Food and Water Considerations
Power outages can impact food and water safety. Keep refrigerator and freezer doors closed to preserve cold temperatures for as long as possible. Non-perishable foods are crucial if cooking is not possible. In prolonged outages, if pipes freeze or water service is disrupted, bottled water is the safest drinking source. As a last resort, snow can be melted and brought to a rolling boil for a minute for emergency use, but be aware that this does not remove chemical contaminants that may be present. [1] [4]
Nutrition is vital—eat well-balanced meals and avoid alcohol or excessive caffeine, which can increase heat loss. If you have dietary or health restrictions, consult your healthcare provider about appropriate emergency rations. [4]
Additional Considerations: Vulnerable Groups and Travel
Check regularly on infants, older adults, and those with special needs. Babies should not sleep in cold rooms, and you may need to make other arrangements if safe indoor heating is not available. For older adults, monitor indoor temperatures closely. Pets and service animals must be brought indoors or provided with weather-appropriate shelter and access to unfrozen water. [1] [4]
Travel during power outages and winter storms should be avoided. If travel is unavoidable, winterize your vehicle and prepare an emergency car kit with supplies such as extra blankets, food, water, a flashlight, and a cell phone charger. [1] [4]
Ongoing Planning and Community Advice
Due to evolving risks, local requirements, health conditions, and heating systems vary. Confirm legal allowances for backup heat sources, generators, and fuel storage in your municipality. Review your emergency plan yearly, and seek updated official preparedness information before each winter season.
Your next steps
- Create a family emergency and communication plan for winter storms. [1] [2] [4]
- Gather and check emergency supplies, including water, non-perishable food, and medications. [1] [2] [4]
- Weatherproof your home: insulate water lines, caulk windows and doors, check heating systems, and install battery-operated smoke and carbon monoxide detectors. [1] [4]
- Have safe alternative heat sources ready, such as extra blankets, warm clothing, sleeping bags, or a fireplace with dry wood. [4]
- Stock up on battery-powered or hand-crank flashlights and lanterns, along with extra batteries. [2] [4]
- Prepare backup power sources for necessary devices, including backup chargers and if appropriate, a generator used according to safety guidance. [2] [4]
- Prepare your vehicle for winter and keep an emergency car kit in case you need to travel. [1]
- Make arrangements for infants, older adults, and pets to ensure they stay warm and safe. [4]
- Monitor weather updates and act promptly if severe winter weather is forecasted. [1] [4]
Sources & evidence
Evidence collected on September 14, 2026. Retrieval status is listed below. This is not expert review or product testing.
- Preparing for a Winter Storm | Winter Weather | CDC
Page text retrieved; no verified quotation
- Power Sources | Prepare Your Health | CDC
Page text retrieved; no verified quotation
- Winter Ready Toolkit (excerpt) | FEMA
Search summary only; source text needs review
- Safety Guidelines: During & After a Winter Storm | Winter Weather | CDC
Page text retrieved; no verified quotation
FILL A GAP IN YOUR KIT
Explore relevant supplies
These are category searches, not tested product recommendations. We may earn a commission from purchases. As an Amazon Associate I earn from qualifying purchases.
Portable power stations
Compare specifications and suitability for your household. Check what you already own before buying.
Explore on Amazon ↗Emergency lighting
Compare specifications and suitability for your household. Check what you already own before buying.
Explore on Amazon ↗Phone power banks
Compare specifications and suitability for your household. Check what you already own before buying.
Explore on Amazon ↗