County annual report · FIPS 10005
2020 Sussex County, DE Power Outage Report
In 2020, customers in Sussex County, DE went without power for an average of 2.7 hours, a total of 589K customer-hours (Delaware average 4.3 hours). That ranks 2nd worst of 3 Delaware counties and 1985th of 3,019 nationally.
Compared with DE, the US and 2019
Coverage line is EAGLE-I's share of Delaware customers tracked each year.
Biggest outages in Sussex County, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 4, 2020 11:00 | August 7, 2020 04:30 | 2d 17h | 34,852 | 290K |
| 2 | November 13, 2020 08:15 | November 13, 2020 20:00 | 11h 45m | 18,587 | 37K |
| 3 | April 13, 2020 10:15 | April 14, 2020 07:15 | 21h | 12,454 | 29K |
| 4 | March 22, 2020 13:15 | March 23, 2020 04:15 | 15h | 9,900 | 2,495 |
| 5 | December 24, 2020 23:30 | December 25, 2020 18:15 | 18h 45m | 6,987 | 13K |
| 6 | March 13, 2020 21:45 | March 14, 2020 08:00 | 10h 15m | 6,045 | 8,466 |
| 7 | June 17, 2020 03:45 | June 17, 2020 09:45 | 6h | 4,331 | 8,190 |
| 8 | February 7, 2020 12:00 | February 8, 2020 01:15 | 13h 15m | 4,237 | 6,276 |
| 9 | May 20, 2020 09:45 | May 20, 2020 15:30 | 5h 45m | 4,019 | 1,924 |
| 10 | September 6, 2020 12:00 | September 7, 2020 08:00 | 20h | 3,555 | 8,213 |
Outage episodes by size in 2020: 159 reached 100+ customers, 45 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 Sussex County reported on EIA Form 861 for 2020, 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 | 2020 | 3.8 hrs | 1.10 | 73 min | 0.80 |
| Delaware Electric Cooperative | 2020 | 4.9 hrs | 2.93 | 1.8 hrs | 1.55 |
| City of Milford - (DE) | - | - | - | - | - |
| City of Lewes - (DE) | - | - | - | - | - |
| City of Seaford- (DE) | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 86% of Delaware's customers in 2020; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 218,986 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. Sussex County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Sussex County, DE annual power outage report, 2020, 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/2020/delaware/sussex-county