County annual report · FIPS 24005
2021 Baltimore County, MD Power Outage Report
In 2021, customers in Baltimore County, MD went without power for an average of 2.8 hours, a total of 1.0M customer-hours (Maryland average 2.5 hours). That ranks 8th worst of 24 Maryland counties and 1927th of 2,974 nationally.
Compared with MD, the US and 2020
Coverage line is EAGLE-I's share of Maryland customers tracked each year.
Biggest outages in Baltimore County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 29, 2021 17:45 | July 25, 2021 11:45 | 25d 18h | 20,948 | 367K |
| 2 | June 19, 2021 11:00 | June 29, 2021 17:00 | 10d 6h | 7,873 | 44K |
| 3 | May 20, 2021 11:30 | May 31, 2021 21:15 | 11d 9h | 7,268 | 46K |
| 4 | April 30, 2021 08:30 | May 4, 2021 00:15 | 3d 15h | 7,064 | 55K |
| 5 | February 23, 2021 14:30 | February 26, 2021 06:30 | 2d 16h | 4,944 | 3,298 |
| 6 | March 26, 2021 07:15 | April 2, 2021 02:00 | 6d 18h | 4,900 | 28K |
| 7 | March 15, 2021 15:45 | March 20, 2021 09:45 | 4d 18h | 4,520 | 6,155 |
| 8 | August 7, 2021 06:15 | August 25, 2021 10:45 | 18d 4h | 4,507 | 118K |
| 9 | June 2, 2021 07:00 | June 19, 2021 08:45 | 17d 1h | 4,118 | 69K |
| 10 | August 25, 2021 12:00 | September 4, 2021 03:15 | 9d 15h | 3,159 | 47K |
Outage episodes by size in 2021: 80 reached 100+ customers, 27 reached 1,000+ customers, 1 reached 10,000+ customers.
Utility reliability filed with the EIA
SAIDI (average outage time per customer) and SAIFI (average interruptions per customer) that utilities serving Baltimore County reported on EIA Form 861 for 2021, or their most recent earlier filing. Utility-wide figures, not county-specific.
| Utility | EIA year | SAIDI | SAIFI | SAIDI excl. major events | SAIFI excl. major events |
|---|---|---|---|---|---|
| Baltimore Gas & Electric Co | 2021 | 2.4 hrs | 1.02 | 77 min | 0.77 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 99% of Maryland's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 370,224 customers (ORNL modeled county customer count), including major storm days. It is comparable across counties but is not the SAIDI a utility files.
- An outage event is a continuous stretch with customers out; counts at 100, 1,000 and 10,000+ use its peak.
- Years loaded: 2015–2025. Baltimore County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Baltimore County, MD annual power outage report, 2021, data as of Oct 3, 2026 02:41 UTC, sources: DOE EAGLE-I (https://eagle-i.doe.gov/); EAGLE-I modeled customer counts (MCC) (https://figshare.com/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2021/maryland/baltimore-county