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

Power outage history

Baltimore County Maryland

4.2hours

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

9th most of 24 in Maryland 36% below the national median

Worst outage on record Jul 12, 2022 11% of customers out · 90% back in 3.5 days
Hours without power, average customer per year 4.2h / yr State average 3.5 h · national median 6.6 h
Major outages a year 0.5 Peaks over 10% of customers or 50,000 customers
Typical time to restore 90% 2.5days Median across major outages, from the peak
Longest single outage 3.8days Jul 12, 2022, over 1% of customers out
Outage hours on storm days 95% Share falling on days with a NOAA storm report here
Worst year 2022 7.7 hours without power, average customer
Electricity customers 370,224 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 Baltimore'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

2022 was the worst well-recorded year, at 7.7 hours for the average customer. Hatched years have a thin record and are left out of the averages.

Baltimore, hours without power per customer

BaltimoreUS median countyMaryland average
0 2 4 6 8 10 1.6 ’15 1.8 ’16 1.9 ’17 5.9 ’18 2.4 ’19 1.7 ’20 2.8 ’21 7.7 ’22 4.6 ’23 3.3 ’24 5.5 ’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
Jul 12, 2022 Thunderstorms 41,962 11% 3.8 d 3.5 d 1.4M
Mar 2, 2018 Windstorm 49,637 13% 3.0 d 3.1 d 1.2M
Aug 7, 2023 Thunderstorms 38,789 10% 48 h 45 h 718k
Feb 16, 2025 Windstorm 32,695 9% 44 h 42 h 587k
May 16, 2025 Thunderstorms 37,514 10% 33 h 26 h 574k
Dec 23, 2022 Winter storm 17,674 5% 35 h 42 h 301k
Jul 17, 2021 Flooding 20,948 6% 19 h 20 h 216k
Aug 3, 2017 Thunderstorms 23,507 6% 21 h 20 h 195k
Aug 4, 2022 Flooding 17,303 5% 22 h 32 h 184k
Aug 3, 2024 Thunderstorms 11,546 3% 22 h 30 h 161k
Jun 18, 2018 Thunderstorms 17,990 5% 21 h 22 h 159k
Jul 17, 2019 Thunderstorms 16,929 5% 19 h 20 h 120k

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 +10h 90% by +44h

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 Baltimore from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.

  • Thunderstorms 54%
  • Windstorm 27%
  • Flooding 7.4%
  • Winter storm 5.1%
  • No storm on record 5.0%
  • Tropical storm 1.2%

Who keeps the lights on

Utilities serving Baltimore

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
Baltimore Gas & Electric Co Investor Owned 175 65 0.87 20.2 1.2M

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 370,224 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 →