County annual report · FIPS 24025
2023 Harford County, MD Power Outage Report
In 2023, customers in Harford County, MD went without power for an average of 6.6 hours, a total of 742K customer-hours (Maryland average 3.6 hours). That ranks 3rd worst of 24 Maryland counties and 1200th of 2,977 nationally.
Compared with MD, the US and 2022
Coverage line is EAGLE-I's share of Maryland customers tracked each year.
Biggest outages in Harford County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 28, 2023 20:15 | August 4, 2023 05:30 | 6d 9h | 30,600 | 149K |
| 2 | August 4, 2023 10:00 | August 16, 2023 09:45 | 11d 23h | 17,771 | 296K |
| 3 | April 1, 2023 22:45 | April 6, 2023 14:00 | 4d 15h | 13,759 | 102K |
| 4 | April 22, 2023 09:45 | April 24, 2023 11:00 | 2d 1h | 4,066 | 31K |
| 5 | December 4, 2023 00:45 | December 7, 2023 10:15 | 3d 9h | 3,814 | 2,355 |
| 6 | July 6, 2023 12:15 | July 7, 2023 11:00 | 22h 45m | 1,588 | 1,852 |
| 7 | January 16, 2023 10:15 | January 19, 2023 10:45 | 3d | 1,575 | 1,876 |
| 8 | April 30, 2023 09:45 | May 2, 2023 19:30 | 2d 9h | 1,507 | 12K |
| 9 | September 7, 2023 11:15 | September 12, 2023 21:15 | 5d 10h | 1,319 | 14K |
| 10 | February 16, 2023 16:45 | February 18, 2023 10:00 | 1d 17h | 1,053 | 2,791 |
Outage episodes by size in 2023: 74 reached 100+ customers, 12 reached 1,000+ customers, 3 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 2023, 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 | 2023 | 2.1 hrs | 0.76 | 58 min | 0.60 |
| Baltimore Gas & Electric Co | 2023 | 3.2 hrs | 0.96 | 60 min | 0.69 |
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 2023; 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, 2023, 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/2023/maryland/harford-county