Power Out Map
– 0% of Worcester out 0 customers out in Maryland

Power outage history

Worcester County Maryland

3.0hours

without power for the average customer in a typical year, 2018–2025

14th most of 24 in Maryland 54% below the national median

Worst outage on record Feb 8, 2017 58% of customers out · 90% back in 10 hours
Hours without power, average customer per year 3.0h / yr State average 3.5 h · national median 6.6 h
Major outages a year 2.8 Peaks over 10% of customers or 50,000 customers
Typical time to restore 90% 2hours Median across major outages, from the peak
Longest single outage 26hours Hurricane Isaias, over 1% of customers out
Outage hours on storm days 50% Share falling on days with a NOAA storm report here
Worst year 2025 5.0 hours without power, average customer
Electricity customers 31,542 ORNL customer model · 8 well-covered years

Every day since 2015

Eleven years, one night at a time

Each cell is a day. The brighter it is, the larger the share of Worcester's customers who were without power at that day's worst moment.

20152016201720182019202020212022202320242025
0%100% of customers out

Year by year

Hours in the dark, per customer

2025 was the worst well-recorded year, at 5.0 hours for the average customer. Hatched years have a thin record and are left out of the averages.

Worcester, hours without power per customer

WorcesterUS median countyMaryland average
0 2 4 6 8 10 2.3 ’15 4.8 ’16 7.4 ’17 4.3 ’18 2.3 ’19 3.9 ’20 1.8 ’21 3.0 ’22 1.8 ’23 1.8 ’24 5.0 ’25 US 6.6 MD 3.5

The record

The biggest outages since 2015

Ranked by customer-hours lost: customers out multiplied by how long they stayed out. Times are local.

Began Storm Peak out Share Lasted 90% restored Customer-hours
Feb 8, 2017 No storm report 18,210 58% 4.8 h 10 h 85k
Mar 5, 2025 Thunderstorms 10,430 33% 7.2 h 7.0 h 73k
Aug 4, 2020 Hurricane Isaias 11,360 36% 26 h 4.0 h 53k
Jan 23, 2016 Winter storm 6,883 22% 11 h 5.8 h 38k
Jan 3, 2017 No storm report 18,536 59% 2.2 h 2.2 h 28k
Mar 2, 2018 Windstorm 4,115 13% 16 h 12 h 27k
Mar 2, 2018 Windstorm 9,328 30% 7.5 h 2.0 h 25k
May 19, 2017 No storm report 7,862 25% 2.5 h 2.2 h 18k
Dec 9, 2017 Winter storm 1,239 4% 12 h – 11k
Jul 9, 2018 No storm report 3,583 11% 6.2 h 4.0 h 10k
Sep 10, 2025 No storm report 3,462 11% 3.8 h 2.0 h 9.2k
Oct 28, 2015 No storm report 2,306 7% 4.2 h 3.0 h 9.1k

After the peak

How fast the lights come back

Each line is one major outage, from its peak. The amber line is the typical path.

0% 25% 50% 75% 100% peak+24h+48h+72h+96h half back by +2h 90% by +4h

When it happens

The outage clock

Customer-hours out by month (rings, January innermost) and local hour, 2018–2025.

00061218 Jan inside

What was happening

Weather behind the outages

Each outage is matched to NOAA storm reports for Worcester from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.

  • No storm on record 50%
  • Thunderstorms 22%
  • Tropical storm 13%
  • Windstorm 12%
  • Winter storm 2.8%

Who keeps the lights on

Utilities serving Worcester

As each utility reports to the Energy Information Administration for its whole Maryland territory, not this county alone. Outage minutes include major storm days.

Utility Type Outage min / yr Excl. major storms Outages / yr Residential ¢/kWh Customers
Delmarva Power Investor Owned 114 66 0.93 21.8 188k
Choptank Electric Cooperative, Inc Cooperative 217 121 1.80 17.1 51k
Town of Berlin MD 128 128 2.09 – 27k

EIA Form 861, latest year each utility reported. Outage minutes are SAIDI, the yearly minutes the average customer goes without power; outages a year are SAIFI.

Next door

Neighbouring counties

Across Maryland

Where it is darkest

Hours / yr64+

All Maryland counties →

About these numbers

Notes

Outages come from the EAGLE-I record of utility outage maps collected every 15 minutes by Oak Ridge National Laboratory. Hours without power are customer-hours divided by the county's 31,542 electricity customers. Averages use well-covered years from 2018. Outages shorter than 15 minutes, and utilities that publish no outage map, are not in the record, so these figures understate the total. How every number is made →