County annual report · FIPS 24025
2025 Harford County, MD Power Outage Report
In 2025, customers in Harford County, MD went without power for an average of 4.2 hours, a total of 478K customer-hours (Maryland average 4.2 hours). That ranks 10th worst of 24 Maryland counties and 1700th of 3,000 nationally.
Compared with MD, the US and 2024
Coverage line is EAGLE-I's share of Maryland customers tracked each year.
Biggest outages in Harford County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | February 15, 2025 21:45 | February 21, 2025 21:30 | 5d 23h | 16,156 | 127K |
| 2 | October 6, 2025 11:00 | October 10, 2025 09:30 | 3d 22h | 10,108 | 6,583 |
| 3 | July 16, 2025 22:00 | July 23, 2025 11:00 | 6d 13h | 7,491 | 38K |
| 4 | May 16, 2025 12:15 | May 21, 2025 04:45 | 4d 16h | 6,001 | 41K |
| 5 | July 8, 2025 20:45 | July 12, 2025 05:45 | 3d 9h | 5,621 | 28K |
| 6 | June 30, 2025 15:15 | July 3, 2025 05:45 | 2d 14h | 5,348 | 36K |
| 7 | August 17, 2025 22:15 | August 18, 2025 19:15 | 21h | 4,337 | 9,266 |
| 8 | December 6, 2025 11:45 | December 7, 2025 10:45 | 23h | 2,883 | 2,538 |
| 9 | December 14, 2025 08:00 | December 16, 2025 02:15 | 1d 18h | 2,848 | 11K |
| 10 | June 19, 2025 14:15 | June 30, 2025 14:15 | 11d | 2,559 | 22K |
Outage episodes by size in 2025: 99 reached 100+ customers, 19 reached 1,000+ customers, 2 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 Harford County reported on EIA Form 861 for 2025, 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 |
|---|---|---|---|---|---|
| Delmarva Power | 2024 | 1.7 hrs | 0.73 | 62 min | 0.61 |
| Baltimore Gas & Electric Co | 2024 | 2.2 hrs | 0.80 | 67 min | 0.63 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about n/a of Maryland's customers in 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 112,536 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. Harford County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Harford County, MD annual power outage report, 2025, 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/2025/maryland/harford-county