Home Security During a Blackout: A Calm Household Plan
Seasonal Content: This guide is most relevant during summer months.
A blackout does not require a fortress plan. Most useful actions are ordinary: account for household members, lock doors and windows, use safe lighting, protect communication, and avoid creating a carbon monoxide or fire hazard while securing equipment.
This page is the security cluster for the Power Outage Home Resilience Manual and the Urban Preparedness hub. For everyday locks, cameras, and entry planning, continue to the Home Security hub.
In the first few minutes
- Check for fire, carbon monoxide, electrical damage, gas odor, flooding, and downed lines.
- Account for people and pets.
- Lock the doors, windows, garage access, and gates normally used by the household.
- Place flashlights or headlamps where they prevent falls.
- Check official utility and local emergency information.
- Send the agreed household status message.
Do not patrol a dark property or confront an unknown person. If someone is trying to enter, move to a safer location when possible and call the emergency number for your area.
Lighting without advertising or creating hazards
Battery lights can help at entrances, stairs, hallways, and the route to the electrical panel. Keep them aimed so household members can see without shining into neighboring homes or road traffic.
- Avoid candles and improvised flames.
- Do not run cords across exits or dark walkways.
- Keep exterior motion lights at a level that supports visibility rather than glare.
- Close curtains or blinds when that improves privacy, but keep fabric away from heaters and lights.
- Preserve some battery capacity for evacuation and medical needs.
Visible, normal occupancy is enough. There is no evidence-based need to vary lights in an elaborate pattern or make the home look more threatening than nearby homes.
Keep alarms and entry systems usable
Know which devices have battery backup and how long their manufacturer says it may last. Test smoke and carbon monoxide alarms on schedule. Review the manual for security panels, smart locks, garage doors, gates, cameras, and intercoms.
- Keep physical keys accessible to authorized household members.
- Learn the manual garage-door release before an outage.
- Save the alarm monitoring number and account details on paper.
- Do not disable smoke or carbon monoxide alarms to preserve a battery.
- Do not depend on cloud cameras or mobile notifications as the only alert path.
Use the Emergency Communication Plan for paper contacts and alternative message paths.
Secure a generator without making it unsafe
The CDC generator safety guidance requires portable generators outdoors and at least 20 feet from doors, windows, and vents, with exhaust pointed away.
Security measures must not move the generator closer to the home, enclose it, block cooling or exhaust, create a trip hazard, or prevent emergency shutdown. Use manufacturer-approved anchoring points and a lock suitable for outdoor use. Never bring a running or hot generator into a garage, shed, or home.
Do not advertise fuel storage. Store fuel only in approved containers and locations allowed by local code. The Generator Runtime Calculator can help plan runtime so equipment is not left operating without a household purpose.
Coordinate with neighbors without escalating fear
Trusted neighbors can share verified utility updates, check whether someone needs help, and report a damaged line or blocked road. Agree on a simple channel and check-in time before the outage.
Do not circulate rumors, publish inventories of household supplies, or organize armed patrols. Contact local authorities for suspected crime. Community support should reduce risk, not create confrontation.
Leave when the home is no longer safe
Security equipment does not make a home suitable during fire, flooding, structural damage, unsafe heat or cold, medical failure, or an evacuation order. Use the Outage Readiness Planner to record a backup location and transport plan.
Continue with Long Power Outage Planning and Indoor Heating Safety.
Frequently asked questions
Should I leave exterior lights on continuously?
Use enough light for safe entrances and movement, balanced against battery capacity and neighbor glare. There is no universal pattern that prevents crime. Normal locks, visibility, communication, and avoiding confrontation are more reliable planning priorities.
What if a smart lock or garage door loses power?
Read the manual before an outage, keep authorized physical keys available, and learn the manual release procedure. Never defeat a fire-rated door, building access rule, or required safety feature to create a shortcut.
Can I chain a generator to the house?
Use only manufacturer-approved anchoring points and preserve the required outdoor placement, airflow, exhaust direction, and emergency shutdown access. A security chain must never justify moving or enclosing a generator.
What records help after a security incident?
From a safe location, note the time, location, description, and any official report number. Preserve camera clips without posting them publicly, and give relevant information to local authorities or the insurer. Do not enter a damaged area or confront someone to collect evidence.
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