Summary
Extended power outages have left U.S. communities without electricity for weeks or even months. Preparing for a long-term outage means having reliable emergency lighting, backup power, stored water and water filtration, a way to cook without the grid, and shelf-stable food.
Extended Power Outages Are More Common Than You Think
When the power goes out, most of us expect it to come back within a few hours—or maybe a day after a major storm.
But what happens when days turn into weeks?
Or worse…weeks turn into months?
It's happened more often than you might think.
Over the past 50 years, American communities have endured outages lasting weeks and, in some cases, months.
When the Power Stays Off for Weeks
Since 1979, communities across the United States and its territories have gone 2 weeks, a month, and even several months without grid power.
Hurricanes are responsible for many of the longest outages, but ice storms have done it too.
Here are 15 times Americans faced extended power outages—and just how long it took to get the lights back on.
1. 2007 Ice Storm — Eastern Oklahoma
How long: Up to 2 weeks
Cause: Severe freezing rain and ice
One to 2 inches of ice accumulated on trees and power lines across eastern Oklahoma. Nearly 1 million people lost power, and some remained without electricity for up to 2 weeks. [1]
2. Hurricane Wilma — South Florida, 2005
How long: Up to 18 days
Cause: Category 3 hurricane
Wilma knocked out electricity to 3.2 million Florida Power & Light customers. Five days later, half had been restored. FPL's restoration effort took 18 days to get power back across its affected system. [2]
3. Hurricane Ike — Houston Area, Texas, 2008
How long: Up to 18 days
Cause: Category 2 hurricane
Ike knocked out power to 2.15 million CenterPoint customers. Within 2 weeks, more than 2 million had been restored. CenterPoint concluded emergency restoration operations on the 18th day, with only isolated cases remaining. [3]
4. Hurricane Hugo — South Carolina, 1989
How long: 2 to 3 weeks
Cause: Category 4 hurricane
Hugo's winds, debris and falling trees destroyed large portions of the electrical system. About 1.5 million customers lost power, and in many cases electricity wasn't restored for 2 to 3 weeks. [4]
5. Hurricane Rita — Texas and Louisiana, 2005
How long: About 3 weeks
Cause: Category 3 hurricane
Rita left roughly 1.25 million customers without electricity, primarily in Texas and Louisiana. The U.S. Department of Energy reported that power restoration was nearly complete about 3 weeks after landfall. [5]
6. 2009 Ice Storm — Western Kentucky
How long: 3 weeks or longer
Cause: Severe freezing rain and ice
The storm caused unprecedented damage to western Kentucky's utility infrastructure. Thousands of poles went down, and several thousand rural customers were still without power 3 weeks after the storm. [6]
7. Hurricane Fiona — Puerto Rico, 2022
How long: Up to 4 weeks
Cause: Category 1 hurricane
Fiona triggered an island-wide blackout in Puerto Rico. The U.S. Department of Energy reports that residents in some parts of the territory remained without electricity for as long as 4 weeks. [7]
8. 1994 Ice Storm — Mississippi
How long: Up to one month
Cause: Severe freezing rain and ice
Northern Mississippi was devastated by ice accumulations reaching several inches. About 750,000 customers lost power, and NOAA reported that electricity wasn't restored to some locations for one month. [8]
9. Hurricane Iniki — Kauai, Hawaii, 1992
How long: More than 4 weeks for many residents
Cause: Category 4 hurricane
Iniki knocked out electricity across Kauai and heavily damaged the island's utility system. 4 weeks after the hurricane, only about 20% of the island's power had been restored. [9]
10. Hurricane Andrew — South Florida, 1992
How long: Over a month in the hardest-hit areas
Cause: Category 5 hurricane
Andrew devastated South Florida's electrical system. Florida Power & Light later reported that some customers remained without electricity for up to 5 weeks after the storm. [10]
11. Hurricane Michael — Florida Panhandle, 2018
How long: Several weeks
Cause: Category 5 hurricane
Michael's catastrophic winds caused widespread damage to the electrical system. Nearly 100% of customers across a large portion of the Florida Panhandle lost power, and the National Weather Service reports that some outages lasted for weeks. [11]
12. Hurricane Laura — Southwest Louisiana, 2020
How long: Up to 35 days
Cause: Category 4 hurricane
Laura caused catastrophic damage to southwest Louisiana's electric grid. More than 900,000 Entergy customers lost power, and some remained without electricity for as long as 35 days while crews rebuilt damaged infrastructure. [12]
13. Hurricane Frederic — Mobile County, Alabama, 1979
How long: Up to 5 weeks
Cause: Category 4 hurricane
Frederic's winds toppled trees and brought down thousands of power lines across coastal Alabama. The National Weather Service reports that some areas of Mobile County remained without electricity for 5 weeks. [13]
14. Hurricanes Irma and Maria — U.S. Virgin Islands, 2017
How long: About 5 months
Cause: Two Category 5 hurricanes
Irma and Maria heavily damaged the U.S. Virgin Islands' electrical system. According to the U.S. Government Accountability Office, it took roughly 5 months to restore power to all customers whose structures were safe to receive it. [14]
15. Hurricanes Irma and Maria — Puerto Rico, 2017
How long: Roughly 11 months
Cause: Hurricanes Irma and Maria
The hurricanes devastated Puerto Rico's electrical grid, with Maria leaving all 3.3 million residents without power. Restoring electricity to all customers whose structures were considered safe for restoration took roughly 11 months—the longest blackout in U.S. history. [15]
If the Power Stayed Off for Weeks, Would You Be Ready?
A few hours without electricity is an inconvenience. A week or more is something entirely different.
By then, you're not just looking for a flashlight.
- You need reliable light every night.
- Phones and other essential devices need charging.
- You need a way to cook when your normal appliances don't work.
- And the food in your refrigerator and freezer won't last forever.
That's why preparing for an extended outage takes more than a flashlight and a few spare batteries.
You need a plan for keeping the essentials working when the grid isn't.
Start With Light You Can Depend On
When you're facing days or weeks without power, you need more than one way to light your home.
A rechargeable headlamp gives you hands-free light for cooking, repairs, finding supplies, or checking outside.
For lighting an entire room, the USB Emergency Lantern & Power Bank provides wide LED illumination and doubles as a 3,000 mAh power bank for phones and small devices.
And if the outage stretches on, having a light that doesn't depend on one charging method becomes even more useful. The 4-in-1 Emergency Solar Flashlight & AM/FM/NOAA Weather Radio can recharge by solar, hand crank, USB, or backup batteries. It also gives you access to AM/FM/NOAA weather radio when internet or cell service is unreliable.
Don't make one flashlight your entire lighting plan. Have portable light, room light, and a backup that can keep working when your usual charging options can't.
Have Backup Power for What Matters Most
Once an outage lasts more than a day, keeping the lights on is only part of the problem.
Phones need charging. Refrigeration may become a concern. Radios and other electronics need power. Some households may also have medical equipment they can't simply go without.
You don't necessarily need to keep every appliance in your home running.
You need to know what matters most and have enough backup power for it.
A solar generator gives you a way to store electricity and run essential devices when grid power isn't available. The right size depends on what you intend to power, so figure out those needs before an outage happens.
Smaller backups matter too.
The Wireless Solar PowerBank Charger & 20 LED Room Light provides 20,000 mAh of portable backup power for phones and small electronics. It supports wired and wireless charging and includes a 20-LED room light.
Make Sure You Can Feed Your Family
If your kitchen depends on an electric stove, oven, or microwave, a long blackout can take away your normal way of preparing meals.
That's why you need a way to cook without the grid.
The Inferno PRO Outdoor Biomass Stove gives you serious outdoor cooking power without propane or grid power. It burns sticks, twigs, wood pellets, and other biomass, with adjustable heat from 425°F to 1,200°F. You can boil water, heat meals, and cook with pots and pans even when your kitchen isn't available.
For an indoor option, the VESTA Self-Powered Indoor Space Heater & Stove runs on InstaFire Canned Heat+ and requires no electricity, batteries, or propane. It provides a stable cooking surface for preparing food indoors with adequate ventilation. And during a cold-weather outage, it doubles as a space heater designed to warm areas up to 200 square feet.
Have a Backup Plan for Water
If your home relies on an electric well pump, losing power can mean losing running water. Major disasters can also disrupt or contaminate municipal water supplies.
Keep drinking water stored ahead of time, and have a way to treat additional water if needed. Water filtration and purification supplies give you another option when you can't rely on what's coming from the tap.
The longer the outage lasts, the more important a reliable water supply becomes.
Don't Let Your Food Supply Depend on Electricity
If an outage continues, you eventually need food that doesn't depend on refrigeration to remain safe to eat.
That's where emergency food becomes critical.
Shelf-stable emergency food gives you a supply that can sit ready until it's needed.
More importantly, it means losing grid power doesn't automatically mean losing your backup food supply along with it.
Think beyond the first few meals.
If you're preparing for the possibility of a 2-week outage, have enough food for everyone in your household—and make sure your cooking and water plans can support it.
Prepare Before the Lights Go Out
Most power outages won't last for weeks.
But the 15 outages above show that weeks without grid power are not just a hypothetical emergency. American communities have already lived through them.
You don't need to believe a nationwide grid collapse is around the corner to prepare for an extended outage.
You just need to ask yourself one question:
If your power went out tonight and didn't come back for weeks, would your household be ready?
If not, now is the time to make sure you have the lighting, backup power, cooking equipment, and food you'll need while the grid is still working.
How long could your household make it without grid power? Let us know in the comments.
In liberty,
Elizabeth Anderson
Preparedness Advisor, My Patriot Supply
Frequently Asked Questions
How long can a power outage last after a major disaster?
Most outages are restored relatively quickly, but major disasters can leave damaged electrical systems offline for weeks or longer. U.S. communities have experienced outages lasting several weeks, while restoration after Hurricanes Irma and Maria took months in parts of the U.S. Virgin Islands and Puerto Rico.
What do I need for a 2-week power outage?
Focus on the things your household will need every day without grid power: reliable emergency lighting, backup power for essential devices, stored water and water filtration, an off-grid way to cook, and shelf-stable emergency food. Consider any medical equipment or other household needs that require electricity.
What's the best backup power for a long-term outage?
The right backup power depends on what you need to run and how much electricity those devices use. A solar generator can provide backup power when the grid is down, while smaller power banks can keep phones and other small electronics charged.
How can I cook during a power outage?
If your normal kitchen appliances require electricity, have an off-grid cooking option ready. The Inferno PRO burns biomass for outdoor cooking, while the VESTA uses InstaFire Canned Heat+ and can provide an indoor cooking surface with adequate ventilation.
Can a power outage affect my water supply?
Yes. Homes that rely on electric well pumps can lose running water when electricity fails. Major disasters can also disrupt municipal water systems or lead to water-quality problems. Store drinking water before an emergency and keep water filtration or treatment supplies available as a backup.
Sources
[1] NOAA National Centers for Environmental Information.Storm Events Database: December 2007 Oklahoma Ice Storm. https://www.ncei.noaa.gov/stormevents/eventdetails.jsp?id=63389
[2] Florida Power & Light.Impact from 2005's Hurricane Wilma Led FPL to Make Energy Grid Stronger, Smarter and More Storm Resilient. October 23, 2020. https://newsroom.fpl.com/Impact-from-2005s-Hurricane-Wilma-led-FPL-to-make-energy-grid-stronger,-smarter-and-more-storm-resilient
[3] T&D World / CenterPoint Energy.CenterPoint Energy Concludes Emergency Operations. October 2, 2008. https://www.tdworld.com/overhead-distribution/article/20962691/centerpoint-energy-concludes-emergency-operations
[4] National Research Council.Hurricane Hugo, Puerto Rico, the Virgin Islands, and Charleston, South Carolina, September 17–22, 1989: Lifelines. National Academies Press, 1994. https://www.nationalacademies.org/read/1993/page/267
[5] U.S. Department of Energy.United States Fuel Resiliency, Volume II. https://www.energy.gov/sites/prod/files/2015/04/f22/QER Analysis - United States Fuel Resiliency Volume II.pdf
[6] NOAA National Centers for Environmental Information.Storm Events Database: January 2009 Kentucky Ice Storm. https://www.ncei.noaa.gov/stormevents/eventdetails.jsp?id=148793
[7] U.S. Department of Energy.2023 Year in Review: Advancing Puerto Rico's Grid Recovery and Modernization. January 11, 2024. https://www.energy.gov/articles/2023-year-review-advancing-puerto-ricos-grid-recovery-and-modernization
[8] NOAA National Climatic Data Center.The Great Ice Storm of February 1994. https://repository.library.noaa.gov/view/noaa/13818/noaa_13818_DS1.pdf
[9] NOAA / National Weather Service.Hurricane Iniki, September 6–13, 1992. April 1993. https://repository.library.noaa.gov/view/noaa/7240/noaa_7240_DS1.pdf
[10] FPL Newsroom.FPL Workforce Polishes Hurricane Preparedness & Response Planning. 2001. https://newsroom.fpl.com/2001-05-22-FPL-Workforce-Polishes-Hurricane-Preparedness-Response-Planning
[11] National Weather Service Tallahassee.Hurricane Michael 2018. https://www.weather.gov/tae/HurricaneMichael2018
[12] Entergy.Entergy Responds to an Unprecedented Storm Season. December 1, 2020. https://www.entergy.com/stormcenter/entergy-responds-to-an-unprecedented-storm-season-eei-electric-perspectives
[13] National Weather Service Mobile/Pensacola.Hurricane Frederic — September 12, 1979. https://www.weather.gov/mob/frederic
[14] U.S. Government Accountability Office.2017 Hurricane Season: Federal Support for Electricity Grid Restoration in the U.S. Virgin Islands and Puerto Rico. April 2019. https://www.gao.gov/assets/gao-19-296.pdf
[15] U.S. Government Accountability Office.2017 Hurricane Season: Federal Support for Electricity Grid Restoration in the U.S. Virgin Islands and Puerto Rico. April 2019. https://www.gao.gov/products/gao-19-296
