County annual report · FIPS 24025
2018 Harford County, MD Power Outage Report
In 2018, customers in Harford County, MD went without power for an average of 9.2 hours, a total of 1.0M customer-hours (Maryland average 5.5 hours). That ranks 2nd worst of 23 Maryland counties and 613th of 2,798 nationally.
Compared with MD, the US and 2017
Coverage line is EAGLE-I's share of Maryland customers tracked each year.
Biggest outages in Harford County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | March 2, 2018 04:45 | March 6, 2018 01:00 | 3d 20h | 45,995 | 783K |
| 2 | August 4, 2018 11:15 | August 10, 2018 00:30 | 5d 13h | 3,948 | 8,598 |
| 3 | May 22, 2018 10:15 | May 23, 2018 15:45 | 1d 5h | 3,795 | 1,664 |
| 4 | March 6, 2018 03:15 | March 6, 2018 22:00 | 18h 45m | 3,045 | 45K |
| 5 | October 21, 2018 02:00 | October 25, 2018 17:30 | 4d 15h | 2,864 | 7,702 |
| 6 | July 2, 2018 23:15 | July 5, 2018 02:30 | 2d 3h | 2,839 | 11K |
| 7 | March 6, 2018 22:45 | March 9, 2018 05:30 | 2d 6h | 2,573 | 35K |
| 8 | January 12, 2018 12:15 | January 13, 2018 19:00 | 1d 6h | 2,345 | 2,620 |
| 9 | July 17, 2018 11:30 | July 18, 2018 23:15 | 1d 11h | 1,737 | 3,673 |
| 10 | August 31, 2018 21:00 | September 1, 2018 10:30 | 13h 30m | 1,589 | 5,468 |
Outage episodes by size in 2018: 83 reached 100+ customers, 19 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 Harford County reported on EIA Form 861 for 2018, 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 | 2018 | 2.8 hrs | 1.12 | 86 min | 0.91 |
| Baltimore Gas & Electric Co | 2018 | 7.2 hrs | 1.32 | 1.6 hrs | 0.95 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 98% of Maryland's customers in 2018; 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, 2018, 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/2018/maryland/harford-county