County annual report · FIPS 10003
2021 New Castle County, DE Power Outage Report
In 2021, customers in New Castle County, DE went without power for an average of 2.1 hours, a total of 399K customer-hours (Delaware average 1.3 hours). That ranks 1st worst of 3 Delaware counties and 2190th of 2,974 nationally.
Compared with DE, the US and 2020
Coverage line is EAGLE-I's share of Delaware customers tracked each year.
Biggest outages in New Castle County, 2021
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 26, 2021 12:45 | March 30, 2021 02:45 | 3d 14h | 6,971 | 34K |
| 2 | November 8, 2021 13:00 | November 10, 2021 03:45 | 1d 14h | 4,841 | 3,988 |
| 3 | April 28, 2021 11:30 | April 30, 2021 00:00 | 1d 12h | 4,426 | 2,998 |
| 4 | November 15, 2021 12:00 | November 16, 2021 10:15 | 22h 15m | 3,481 | 3,178 |
| 5 | December 17, 2021 02:30 | December 17, 2021 04:45 | 2h 15m | 3,385 | 6,369 |
| 6 | September 1, 2021 10:15 | September 10, 2021 22:00 | 9d 11h | 3,338 | 35K |
| 7 | July 2, 2021 10:15 | July 3, 2021 08:45 | 22h 30m | 2,952 | 5,159 |
| 8 | August 22, 2021 17:45 | August 25, 2021 06:15 | 2d 12h | 2,951 | 8,269 |
| 9 | July 7, 2021 13:00 | July 9, 2021 09:15 | 1d 20h | 2,908 | 1,564 |
| 10 | April 7, 2021 12:15 | April 9, 2021 03:45 | 1d 15h | 2,832 | 1,378 |
Outage episodes by size in 2021: 155 reached 100+ customers, 38 reached 1,000+ customers, 0 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 New Castle County reported on EIA Form 861 for 2021, 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 | 2021 | 63 min | 0.82 | 63 min | 0.82 |
| City of Newark - (DE) | 2021 | 35 min | 0.37 | 35 min | 0.37 |
| New Castle Municipal Serv Comm | 2018 | 39 min | 1.20 | 39 min | 1.20 |
| Town of Smyrna - (DE) | - | - | - | - | - |
| Town of Middletown - (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 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 191,056 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. New Castle County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), New Castle County, DE annual power outage report, 2021, 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/2021/delaware/new-castle-county