Federal outage records · 2015–2025
Eleven years of 15-minute outage records for all 3,143 US counties. How often the power fails where you live, how long it stays off, and how fast it comes back.
Scroll to watch the lights go outThe biggest nights · 2015–2025
Every storm here left more than a million customers without power at once. Keep scrolling to fly to each one and watch the record replay, fifteen minutes at a time.
Or skip ahead ↓Irma came ashore in the Keys as a Category 4 and ran the length of the Florida peninsula, so no part of the state was spared. It remains the largest outage in the record.
A derecho, a line of straight-line winds, ran from South Dakota to Ohio in a single afternoon. Gusts above 100 mph in eastern Iowa snapped transmission towers, and Cedar Rapids stayed dark for days.
Isaias was only a tropical storm by the time it reached the Northeast, but it crossed the tree-lined suburbs of New Jersey, New York and Connecticut at speed. Fallen trees took down more lines than utilities there had seen since Sandy.
The wires mostly held. Arctic air froze gas wells, power plants and wind turbines just as heating demand peaked, and the Texas grid operator ordered rotating cuts to keep the system from collapsing. They lasted days, not hours.
Beryl reached Texas as only a Category 1, but it passed straight over Houston. Wind through the city's tree canopy dropped branches onto lines across the region, and restoration dragged on for more than a week in summer heat.
Helene made landfall in Florida's Big Bend as a Category 4 and was still a hurricane deep into Georgia. In the Carolina mountains, record flooding washed out roads and substations and kept crews from much of the damage for weeks.
Hardest hit: Greenville, SC 100% out
county readings of customers without power, every 15 minutes since 2015
without power in a typical year for the customer in the median US county
the darkest well-recorded year: 11 hours without power for the average US customer
The national picture
Hours without power for the average customer in a typical year, 2018–2025. Hover a county, click to open it.
Counties with 10,000+ customers
Counties with 10,000+ customers
Year by year
Hours without power for the average US customer. The record's reach grew until about 2018, so earlier years undercount and are hatched.
By state
Average hours without power per customer, 2018–2025.
Most recent
National events: more than 600,000 customers out across the country at once.
How it is made
Oak Ridge National Laboratory's EAGLE-I record: customers without power in every county, read from utility outage maps every 15 minutes.
The Energy Information Administration's Form 861: who serves each county, their reported reliability, and residential prices.
NOAA's Storm Events Database and the National Hurricane Center's best tracks, matched to each outage by place and time.
Try “Harris”, “Helene”, “Duke Energy” or “Vermont”.