County annual report · FIPS 10003
2025 New Castle County, DE Power Outage Report
In 2025, customers in New Castle County, DE went without power for an average of 3.9 hours, a total of 745K customer-hours (Delaware average 2.4 hours). That ranks 1st worst of 3 Delaware counties and 1801st of 3,000 nationally.
Compared with DE, the US and 2024
Coverage line is EAGLE-I's share of Delaware customers tracked each year.
Biggest outages in New Castle County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | January 28, 2025 13:15 | January 30, 2025 09:00 | 1d 19h | 27,045 | 83K |
| 2 | June 19, 2025 12:15 | June 22, 2025 08:45 | 2d 20h | 10,252 | 95K |
| 3 | February 16, 2025 16:30 | February 19, 2025 10:15 | 2d 17h | 5,051 | 86K |
| 4 | June 30, 2025 10:15 | July 3, 2025 09:45 | 2d 23h | 4,290 | 27K |
| 5 | July 16, 2025 11:45 | July 18, 2025 22:00 | 2d 10h | 3,303 | 14K |
| 6 | September 16, 2025 10:15 | September 17, 2025 10:45 | 1d | 3,221 | 2,106 |
| 7 | March 26, 2025 12:15 | March 27, 2025 03:15 | 15h | 2,813 | 1,110 |
| 8 | August 13, 2025 11:45 | August 15, 2025 07:00 | 1d 19h | 2,709 | 3,890 |
| 9 | October 7, 2025 11:00 | October 9, 2025 07:15 | 1d 20h | 2,699 | 3,658 |
| 10 | August 10, 2025 04:00 | August 10, 2025 23:00 | 19h | 2,651 | 2,682 |
Outage episodes by size in 2025: 171 reached 100+ customers, 45 reached 1,000+ customers, 2 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 2025, 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 | 2024 | 1.7 hrs | 0.73 | 62 min | 0.61 |
| City of Newark - (DE) | 2024 | 84 min | 0.77 | 84 min | 0.77 |
| 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 n/a of Delaware's customers in 2025; 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, 2025, 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/2025/delaware/new-castle-county