Baltimore County Power Outage History
2014–2025 · Maryland
Better than average — fewer or shorter outages than most counties. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Aug 3, 2024 | 78 hrs | 32,673 (11%) | Excessive Heat |
| Mar 3, 2018 | 7 hrs | 29,572 (10%) | Dense Fog |
| Mar 3, 2018 | 1 hrs | 29,479 (10%) | Dense Fog |
| Mar 3, 2018 | 1 hrs | 27,411 (10%) | Dense Fog |
| Mar 3, 2018 | 1 hrs | 25,924 (9%) | Dense Fog |
Over the 12 years from 2014 to 2025, Baltimore County recorded 3,330 distinct power outage events, averaging 2.5 hours per event.
The single worst outage on record in Baltimore County started August 3, 2024 (Excessive Heat), lasting 78 hours and leaving up to 32,673 customers without power (11% of the county) at its peak.
July has historically been the worst month for outages in Baltimore County, with 453 events recorded during that month across the dataset.
Based on this history, Baltimore County earns a Reliability Grade of B, placing it in the 65th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Baltimore County's outage profile
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Outage-prep kit
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Similar counties in Maryland
Counties with the closest reliability grade and national percentile to Baltimore County.
| County | Grade | National percentile |
|---|---|---|
| Prince George's County | B | 67th |
| Worcester County | B | 67th |
| Anne Arundel County | B | 69th |
| Montgomery County | B | 71st |
| Baltimore County | C | 58th |
FAQ
How often does power go out in Baltimore County?
Between 2014 and 2025, Baltimore County recorded 3,330 outage events, averaging 2.5 hours each.
What is Baltimore County's reliability grade?
Baltimore County has a Reliability Grade of B, in the 65th national percentile.
What was the worst power outage in Baltimore County?
The worst outage on record started August 3, 2024 (Excessive Heat), lasting 78 hours and affecting up to 32,673 customers.