Updated: 5 min read

Long Power Outage Planning: Two Weeks and Beyond

Cornerstone Guide
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Seasonal Content: This guide is most relevant during summer months.

Neighborhood homes during a nighttime power outage

An extended outage can change the right decision

If heat, cold, wildfire, flooding, medical needs, sanitation, safety, or an official order makes home unsafe, do not try to outlast the situation. Follow local authorities and make an evacuation or assistance plan early.

Plan for Decisions, Not a Survival Fantasy

Neighborhood homes during a nighttime power outage

Long outages put pressure on ordinary household systems: water, refrigeration, medication, heat or cooling, sanitation, communication, transportation, and cash flow. A useful plan does not promise self-sufficiency for a fixed number of days. It helps the household recognize when conditions are changing and what to do next.

This is a decision-focused cluster of the Power Outage Home Resilience Manual and the broader Home Resilience Guide. Baseline household supplies follow Ready.gov emergency kit guidance, while generator placement follows CDC carbon monoxide guidance.

Start with a realistic outage length, the people and pets who depend on the home, and the conditions that would make leaving safer than staying.

The First Day: Protect People and Information

  1. Check official alerts, weather, and local emergency-management guidance.
  2. Tell an out-of-area contact your status and next check-in time.
  3. Preserve phone battery and keep essential charging equipment together.
  4. Check medications, medical devices, refrigerated food, water, and indoor temperatures.
  5. Avoid generator, heating, and cooking shortcuts that create carbon-monoxide, fire, or electrical hazards.

Use the Outage Readiness Planner for a focused starting list. It cannot determine whether your home is safe to occupy.

Build a Two-Week Household Baseline

Water

Stored potable water comes first. The Water Storage Calculator separates the drinking-and-cooking minimum from optional reserves and pet water. Plan extra water with a clinician or veterinarian when a household member has medical, mobility, feeding, or sanitation needs.

Do not assume rainwater, a pool, a hot-water tank, or a nearby stream is ready to drink. Each source needs its own safety assessment and treatment plan.

Food

Keep familiar foods that can be eaten without power, and only add cook-required foods when you have a safe, practiced fuel and water plan. The Food Storage Calculator can turn household size and duration into a practical category list.

Use food-safety guidance from local public health authorities when refrigeration has been interrupted. When in doubt about a perishable item, discard it rather than guessing.

Power

List only the loads that change safety or communication: medical equipment under professional guidance, a refrigerator if appropriate, lights, phones, a modem, or a sump pump. Use manufacturer manuals for battery, generator, and inverter limits.

Portable generators stay outdoors, more than 20 feet from doors, windows, and vents. Runtime is not proof that a motor will start or that a home connection is safe.

Communication and information

Keep printed contacts, meeting places, local emergency numbers, and an out-of-area contact. Download maps before you need them, and use short messages. See the emergency communication plan for a household-ready setup.

Reassess Each Day

Ask these questions every morning and after a major weather or safety change:

  • Is the home still safe to occupy at the current temperature and sanitation level?
  • Do we have enough potable water, medication, safe food, and device power for the next day?
  • Has an official order, road closure, fire, flood, or local crime/safety issue changed the plan?
  • Is someone becoming isolated, overwhelmed, ill, or unable to manage a necessary task?
  • Do we have a safe way to leave or ask for help if staying stops making sense?

Write the answers down. A written decision log makes it easier for household members and outside contacts to understand the current plan.

Community Without Overreach

Neighbors can be a meaningful part of an outage plan: checking on an older adult, sharing verified local updates, confirming road conditions, or coordinating a ride. Keep boundaries clear. Do not accept medical, electrical, fuel, or security advice from a neighbor when a qualified professional or local authority is needed.

If resources are limited, prioritize immediate health and safety needs, children, older adults, people with disabilities, and anyone who relies on powered medical equipment. Local emergency management and community organizations may have current assistance information; use official channels rather than rumor chains.

Conditions That Mean “Leave or Get Help”

Prepare a plan for relocation or assistance before the decision is urgent. Examples include:

  • An evacuation order or credible immediate fire, flood, or storm threat
  • Unsafe indoor heat or cold, especially for infants, older adults, or medically vulnerable people
  • Loss of medication, medical-device power, safe water, or sanitation that cannot be restored promptly
  • Carbon-monoxide symptoms, a fire hazard, or an unsafe generator/heating setup
  • An inability to communicate, travel safely, or meet basic care needs

Call the emergency number for your area whenever immediate danger is present and a connection is available. For non-immediate assistance, use local official resources and the contact plan you prepared.

The Useful Long-Outage Kit

Do not build a separate “survival” pile that no one can manage. Keep the plan tied to ordinary household systems:

  • Potable water, labeled containers, and a treatment backup
  • Familiar food that fits dietary needs and a safe no-cook option
  • Flashlights, batteries, charging cables, and a tested power plan
  • Printed contacts, maps, documents, and local-alert information
  • Medications, mobility/medical supplies, and a care plan confirmed with the relevant professional
  • Pet food, pet water, carriers, and vaccination or care records where relevant
  • A go-bag and transportation plan for the conditions that require leaving

Extended outage planning FAQ

How long should a household prepare for a power outage?
Start with a short outage plan you can maintain, then build toward a longer household baseline as budget and storage allow. The correct duration depends on local hazards, household needs, and whether you have a safe evacuation option.
When should I leave home during a long outage?
Leave or seek help when an official order, unsafe temperature, medical need, sanitation problem, fire or carbon-monoxide risk, or another changing condition makes staying unsafe. Decide the triggers before the outage if possible.
Can a generator keep a household safe indefinitely?
No. A generator is one limited power source with fuel, placement, maintenance, and starting-watt constraints. It must stay outdoors and does not replace water, food, medical, sanitation, communication, or evacuation planning.
What should I do first after power goes out?
Check official information, protect people with medical or temperature-sensitive needs, preserve phone battery, confirm your water and food situation, and send the agreed household check-in message.

Next, use the Outage Readiness Planner, set a water-storage target, build an emergency communication plan, or return to the Urban Preparedness hub.

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