This is the page for the moment the lights actually go out — not before you’ve bought a generator, not after you’ve built a full emergency kit, but right now, in the dark, wondering what to do first. Whether you own a generator, a battery, or nothing at all, the first 30 minutes of an outage follow the same logic: confirm what you’re dealing with, protect what can be damaged, preserve what you have, and only then start solving the bigger problem.
This checklist is organized by time — what to do in the first five minutes, the next ten, and the rest of the half hour — because sequence matters more than most outage advice admits.
Minutes 0–5: Confirm and Assess
1. Check if it’s just you. Look at neighboring houses and streetlights. If everyone’s dark, it’s a grid-level outage; if only your house is affected, check your own breaker panel first — a tripped main breaker or a blown fuse is a different problem entirely with a different (much faster) fix [→ /maintenance-repair/generator-runs-no-power-output/].
2. Check your phone for outage information. Most utilities offer outage maps and estimated restoration times via app, text alerts, or website — [→ /outage-prep/report-power-outage-track-restoration/] covers exactly how to find and use these. Even a rough estimate (“2-4 hours” vs. “unknown, crews dispatched”) changes every decision that follows.
3. Grab flashlights or headlamps, not candles. This isn’t overcaution — candles are a leading cause of house fires during outages, precisely because people are distracted, it’s dark, and pets or kids are moving around unpredictably. Battery or hand-crank lights are categorically safer [→ /outage-prep/best-emergency-lighting-power-outages/].
4. If you smell gas, leave immediately and call your gas utility or 911 from outside. This overrides every other item on this list — a gas leak combined with an outage is not a scenario to investigate yourself.
Minutes 5–15: Protect and Preserve
5. Unplug or switch off sensitive electronics. Power sometimes returns as a brief surge or with voltage irregularities — computers, TVs, and other sensitive electronics are safer unplugged until power is stably restored. If you have whole-home surge protection, this matters less, but it’s still good practice [→ /installation-costs/generator-installation-cost/].
6. Keep refrigerator and freezer doors closed — starting now, not eventually. This is the single highest-leverage action on this entire list: a closed refrigerator keeps food safe for about 4 hours, and a full freezer holds for roughly 48 hours (24 hours if half-full), per USDA guidance [→ /outage-prep/how-long-food-lasts-fridge-without-power/]. Every unnecessary door-open shortens both windows. Tell everyone in the house this rule immediately — it’s the most commonly violated one in the first hour.
7. If you have a sump pump and rain is active or expected, this is your priority. A powerless sump pump during active rainfall is how basements flood — if you have any backup power option (even a small portable generator on an interlock), this is the load that justifies deploying it first [→ /standby-generators/whole-house-vs-partial-home-backup/].
8. Check on anyone in the household using powered medical equipment. CPAP machines, oxygen concentrators, and similar devices need an immediate plan — battery backup, a portable power station, or knowing exactly how long any built-in battery lasts [→ /outage-prep/power-medical-equipment-during-outage/]. This is the item that should never wait, regardless of what else is happening.
Minutes 15–30: Stabilize and Plan
9. If you have a generator, this is when you set it up — following the rules, not shortcuts. Portable units: 20+ feet from every window, door, and vent, exhaust pointed away, never in a garage even with the door open [→ /portable-generators/portable-generator-safety-carbon-monoxide/]. If it’s raining, use a proper running cover, never a tarp draped on the unit [→ /portable-generators/run-generator-in-rain/]. Standby units start automatically within about 10 seconds — if yours hasn’t, that’s worth checking for a fault code [→ /maintenance-repair/generac-error-codes/].
10. Check your home’s temperature situation. In winter, a heat-free home risks frozen pipes within hours in serious cold — know your plan (a generator running heat, or, absent that, dripping faucets and open cabinet doors under sinks to slow freezing). In summer heat, identify your coolest room now, before anyone’s uncomfortable enough to make poor decisions about it [→ /outage-prep/keep-house-warm-winter-power-outage/].
11. Charge critical devices while any battery power remains. Phones, power banks, and laptops — plugged into a car charger, a portable power station, or whatever power you have access to, prioritized by what you’ll actually need (communication and light over entertainment).
12. Set a check-in rhythm, not constant worry. Decide when you’ll next check the utility’s outage map or restoration estimate — every 30-60 minutes is usually enough. Constantly refreshing an outage map doesn’t restore power any faster and just adds stress.
13. If the outage might extend past a few hours, start the longer preparation now rather than later. This is the pivot point from “immediate response” to “sustained outage planning” — and this site’s fuller preparedness content picks up from here: food safety timelines [→ /outage-prep/how-long-food-lasts-fridge-without-power/], warmth strategies [→ /outage-prep/keep-house-warm-winter-power-outage/], and — if a storm was the cause — the broader event-specific checklist [→ /outage-prep/hurricane-power-outage-prep/].
The Don’ts (Equally Important)
- Don’t run a generator anywhere except outside, 20+ feet from openings — no exceptions, ever, regardless of weather or convenience [→ /portable-generators/portable-generator-safety-carbon-monoxide/].
- Don’t open the fridge or freezer “just to check” — every open door restarts the clock on food safety in a way that compounds over a long outage.
- Don’t use a generator to backfeed through a dryer outlet or any improvised connection — this is illegal everywhere and can kill utility line workers [→ /portable-generators/connect-portable-generator-to-house/].
- Don’t assume a brief flicker means power is back for good — utilities sometimes cycle power during restoration; wait for a stable period before fully resuming normal electrical use.
- Don’t ignore carbon monoxide alarms — if one sounds, get everyone outside immediately and call 911 from outside; don’t investigate first [→ /portable-generators/portable-generator-safety-carbon-monoxide/].
- Don’t wait until you’re uncomfortable to act on temperature, medical equipment, or sump pump needs — by the time discomfort registers, you’ve often lost your best window to act calmly.
A Note on Mindset
Outages are disorienting less because of the dark and more because normal decision-making infrastructure — lights, phone chargers, the ability to just check something online instantly — is suddenly gone. The checklist above exists partly to replace that missing structure: when you don’t know what to do next, the next numbered item is what to do next. That’s genuinely most of what “staying calm” means in practice.
If the outage is caused by severe weather and you’re facing decisions beyond the scope of routine power loss — evacuation, safety threats, injuries — this checklist assumes a standard utility outage, not an active emergency; prioritize official guidance and your safety over any item on this list.
Frequently Asked Questions
What’s the first thing I should do when the power goes out? Confirm whether it’s isolated to your home or the whole area (check neighbors, your own breaker panel, and your utility’s outage map), then move immediately to protecting food safety (keep the fridge/freezer closed) and checking on anyone using powered medical equipment.
How long can you go without power before food goes bad? A closed refrigerator keeps food safe for about 4 hours; a full freezer holds for roughly 48 hours (24 if half-full), per USDA guidance. Every unnecessary door opening shortens both windows [→ /outage-prep/how-long-food-lasts-fridge-without-power/].
Should I unplug my appliances during a power outage? Sensitive electronics (computers, TVs) are safer unplugged, since power sometimes returns as a brief surge. Major appliances generally don’t need unplugging, though refrigerators and freezers should stay closed rather than unplugged.
What should I never do during a power outage? Never run a generator indoors or in a garage (even with the door open), never backfeed power through a dryer outlet, never use candles as your primary lighting, and never ignore a sounding carbon monoxide alarm.
How do I know how long the power will be out? Check your utility’s outage map or text/app alerts for restoration estimates [→ /outage-prep/report-power-outage-track-restoration/] — these are estimates, not guarantees, but they’re the best available information for planning your next steps.
When should I start worrying about an extended outage? Once you’re past the first 30 minutes and restoration estimates suggest several hours or more, shift from immediate-response mode into sustained planning: food safety timelines, temperature management, and — if severe weather caused it — broader storm preparedness [→ /outage-prep/hurricane-power-outage-prep/].