County annual report · FIPS 24025
2015 Harford County, MD Power Outage Report
In 2015, customers in Harford County, MD went without power for an average of 2.5 hours, a total of 286K customer-hours (Maryland average 2.0 hours). That ranks 7th worst of 24 Maryland counties and 1047th of 2,484 nationally.
Compared with MD, the US
Coverage line is EAGLE-I's share of Maryland customers tracked each year.
Biggest outages in Harford County, 2015
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 14, 2015 18:00 | June 29, 2015 09:00 | 14d 15h | 10,298 | 165K |
| 2 | August 5, 2015 04:30 | August 14, 2015 01:30 | 8d 21h | 4,304 | 7,089 |
| 3 | September 26, 2015 16:45 | September 28, 2015 05:00 | 1d 12h | 3,562 | 6,214 |
| 4 | October 9, 2015 21:45 | October 10, 2015 15:15 | 17h 30m | 3,475 | 3,490 |
| 5 | April 8, 2015 09:45 | April 9, 2015 03:45 | 18h | 3,064 | 963 |
| 6 | February 14, 2015 18:45 | February 15, 2015 23:00 | 1d 4h | 2,038 | 1,982 |
| 7 | September 29, 2015 17:30 | October 2, 2015 16:15 | 2d 22h | 1,883 | 16K |
| 8 | June 8, 2015 02:30 | June 14, 2015 17:00 | 6d 14h | 1,792 | 11K |
| 9 | March 21, 2015 13:30 | March 21, 2015 22:30 | 9h | 1,267 | 1,904 |
| 10 | February 22, 2015 13:45 | February 22, 2015 20:00 | 6h 15m | 1,087 | 1,051 |
Outage episodes by size in 2015: 86 reached 100+ customers, 15 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 2015, 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 | 2015 | 3.5 hrs | 1.42 | 1.9 hrs | 1.22 |
| Baltimore Gas & Electric Co | 2015 | 1.7 hrs | 0.93 | 1.5 hrs | 0.89 |
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 2015; 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, 2015, 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/2015/maryland/harford-county