Guides · Grid-down
Is the power grid shutting down? What the 90-day rumor gets wrong
The viral posts mix up three real things: a Pentagon plan for military bases, a British preparedness campaign and a scheduled FEMA alert test. None of them is a plan to turn off your power.
By PowerLockdown EditorialUpdated November 1, 20266 min readHow we research
In this guide
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Short answer
- Real: the Pentagon's FORTRESS program wants major US military bases to run on their own power, and reporting says the goal is at least 90 days without outside help.
- Real: Britain launched a "Be Ready" campaign on October 22 asking households to keep three days of supplies.
- Real: FEMA and the FCC will test the national Emergency Alert System on TV and radio on November 17, 2026.
- Not real: a planned 90-day, 18-month or any other shutdown of the power to American homes. We found no official source for either number applied to civilians.
Where the 90-day number comes from
On September 30, 2026, Defense Secretary Pete Hegseth announced a program called FORTRESS in his State of the Force address at Marine Corps Base Quantico. Pentagon News summarized it as a plan for every American military installation to "eventually run under its own power" (army.mil). DefenseScoop reported that an October 6 memo set up a program office with an energy pillar built around microgrids at critical installations.
On October 25, Fox News Digital reported, citing internal planning documents, that the Pentagon is developing a standard for major bases in the continental US to sustain essential operations for at least 90 days without outside power, water, fuel or supplies (as summarized by Fortune). Fortune also reported that the Pentagon has released no cost estimate or timeline, that officials are still assessing roughly 500 bases, and that full implementation could take decades.
In other words, the plan is about keeping bases running if the grid is damaged, for example in a war. It is not a schedule for turning the grid off, and it says nothing about cutting power to homes.
Why so many countries are telling people to prepare
Several European governments now ask households to keep a few days of supplies. Britain's campaign, launched October 22, asks for three days: drinking water, food that keeps, a flashlight, a power bank, a battery or wind-up radio, first aid, pet supplies and some cash (Fortune). The US has asked the same for years: Ready.gov recommends several days of food and water for every household.
That advice looks coordinated because it is similar, not because a shutdown is coming. Three days is the standard planning number for storms, cyberattacks and equipment failures, which do cause real outages every year. See how long power outages last for the US numbers.
The November 17 alert is a scheduled test
FEMA and the FCC announced in September that the national Emergency Alert System will be tested at about 2:20 p.m. ET on Tuesday, November 17, 2026. TV and radio will interrupt programming with a message that ends: "This is only a test. No action is required by the public." FEMA's FAQ says Wireless Emergency Alerts are not part of this year's test, so phones should not get it. The backup date is December 3, 2026.
These tests are required by law at least once every three years. A test is not a warning about the grid.
What about "18 months without power"?
We found no official source predicting 18 months without power. Long outage estimates usually trace back to worst-case studies of large transformers, which take many months to replace, and to EMP or severe solar storm scenarios. Those are real planning risks, explained with sources in our solar storm and EMP guides, but they are scenarios, not scheduled events.
What is worth doing anyway
Outages from storms, heat and equipment failures happen every year, and the same three-day kit Britain and Ready.gov recommend covers most of them. A sensible order:
- 01Store water: Ready.gov says one gallon per person per day, for several days.
- 02Keep food that needs no fridge or stove, plus a manual can opener.
- 03Have light that is not candles, a battery or crank radio, and a charged power bank.
- 04If you run a generator or fuel heater, install a battery CO alarm near bedrooms.
- 05Check your home's real number with the free readiness score, then work up to two weeks with the blackout checklist.
These picks cover the basics. They are research-based from manufacturer specs; we do not test products. For the full list, see what to buy before a power outage.
No. 1Water storage
Reliance Jumbo-Tainer 2.0, 7 Gallon (08630-03)
Best for: Rigid, refillable storage you can rotate
- 7 gal / 26 L
- 15.3 × 8.5 × 18.0 in; 2.9 lb empty
- Food safe: LFGB certified and FDA compliant
- PFAS- and BPA-free
- Leak-proof hideaway spigot; dual handles
Tradeoffs
- Reliance does not list it as stackable
- About 58 lb when full (7 gal × ~8.3 lb plus container)
No. 2Emergency food
Mountain House Just In Case… 3-Day Emergency Food Supply
Best for: A 72-hour kit for one person
- 18 servings; about 1,706 calories per day (manufacturer)
- 9 pouches
- Needs 12 cups (0.75 gallon) of water total
- 3.6 lb
- 30-year taste guarantee
- 12.75 × 9.25 × 6.94 in; chicken fried rice certified gluten-free (GFCO)
Tradeoffs
- About 1,706 calories a day is below the FDA 2,000-calorie reference
- Covers one person only
No. 3Emergency radio
Midland ER310PRO Emergency Crank Radio with Power Bank
Best for: Keeping phones charged as well as hearing weather alerts
- Power: USB-C, solar or hand crank; 10,000 mAh lithium-ion battery
- 200+ hours of radio play (manufacturer figure); USB-C full charge in 6 to 8 hours
- NOAA weather alerts (not SAME), AM/FM, Bluetooth streaming, clock and temperature display
- USB-A phone output (5 V, 2.1 A): a full charge powers most smartphones 2 to 3 times (Midland FAQ)
- Cree LED flashlight with SOS strobe; ultrasonic dog whistle
Tradeoffs
- No AA battery backup, unlike the ER310; no water-resistance rating stated.
- Midland's FAQ says solar extends a charge but will not revive a flat battery
No. 4Power bank
Anker 737 Power Bank (PowerCore 24K)
Best for: High-capacity USB-C bank that can charge a laptop
- 24,000 mAh
- 140W max output
- 2× USB-C + 1× USB-A
- Smart digital display
- 630 g (22.22 oz)
Tradeoffs
- No solar input; recharge from wall or USB-C
- Heavy for a pocket
No. 5CO alarm
First Alert CO710 Carbon Monoxide Alarm with 10-Year Battery
Best for: A no-install alarm you can set on a nightstand or carry room to room
- Sealed 10-year lithium battery (no battery changes)
- Listed to UL 2034
- Backlit display: CO level, peak level and temperature
- 85 dB alarm; tabletop design
Tradeoff
- Tabletop only, and when the sealed battery ends the whole unit is replaced.
How to check a grid rumor yourself
- Look for the original source: a FEMA, DOE, utility or grid operator page, not a screenshot.
- Check the scope: does it say homes, or bases, or one region?
- Check the date: old stories about transformers and solar storms recirculate every year.
- Your utility's outage map and your local emergency management office are the places a real planned outage would be announced.
Frequently asked questions
- Is the power grid shutting down for 90 days?
- No shutdown has been announced. As of November 1, 2026, no federal agency, utility or grid operator has announced a planned civilian grid shutdown. The 90-day figure comes from a reported Pentagon standard for military bases to operate on their own for 90 days if outside power, water or fuel is cut.
- What is the Pentagon FORTRESS plan?
- A program Defense Secretary Pete Hegseth announced on September 30, 2026 to make US military installations more self-sufficient, including running on their own power. Fox News Digital reported on October 25 that it includes a 90-day self-sufficiency standard for major bases. It applies to bases, not homes.
- Is the November 17 emergency alert about the power grid?
- No. It is the scheduled nationwide test of the Emergency Alert System at about 2:20 p.m. ET on November 17, 2026. FEMA says it will run on TV and radio, not phones, and the message says no action is required.
- Should I prepare for a power outage anyway?
- Yes, for ordinary reasons. Storms, heat and equipment failures cause outages every year. Ready.gov recommends several days of water and food for every household, and Britain's new campaign asks for three days.
- Why are other countries telling people to stock up?
- Several governments, including Britain on October 22, 2026, now publish household preparedness advice for storms, cyberattacks and other disruptions. The advice is for a few days of supplies and does not announce any outage.
Sources
- Pentagon News via army.mil, Hegseth delivers 'State of the Force' address, outlines series of new initiatives, October 2, 2026.
- DefenseScoop, Pentagon memo outlines plan to operationalize new 'FORTRESS America' program office, October 7, 2026.
- Fortune, Pentagon orders bases to plan for 90 days without the grid as Britain urges families to stockpile food and water, October 26, 2026.
- FEMA, FEMA and FCC Schedule 2026 Nationwide Test of the Emergency Alert System for November 17, 2026, September 16, 2026.
- FEMA, Frequently Asked Questions about the Nationwide Emergency Alert System Test, accessed November 1, 2026.
- Ready.gov (FEMA), Build a Kit, updated July 1, 2026.
- Ready.gov (FEMA), Water, accessed October 27, 2026.
- CDC, About Carbon Monoxide Poisoning, reviewed October 2026.
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