County annual report · FIPS 42045
2021 Delaware County, PA Power Outage Report
In 2021, customers in Delaware County, PA went without power for an average of 1.8 hours, a total of 495K customer-hours (Pennsylvania average 4.1 hours). That ranks 65th worst of 67 Pennsylvania counties and 2331st of 2,974 nationally.
Compared with PA, the US and 2020
Coverage line is EAGLE-I's share of Pennsylvania customers tracked each year.
Biggest outages in Delaware 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 | July 20, 2021 02:30 | July 23, 2021 00:15 | 2d 21h | 7,145 | 24K |
| 2 | March 28, 2021 23:00 | March 30, 2021 00:00 | 1d 1h | 4,347 | 13K |
| 3 | August 7, 2021 15:15 | August 15, 2021 17:30 | 8d 2h | 3,843 | 16K |
| 4 | May 23, 2021 07:15 | May 27, 2021 22:45 | 4d 15h | 3,419 | 17K |
| 5 | February 23, 2021 13:15 | February 27, 2021 00:45 | 3d 11h | 2,672 | 7,127 |
| 6 | November 13, 2021 14:00 | November 19, 2021 08:45 | 5d 18h | 2,516 | 11K |
| 7 | October 18, 2021 17:15 | October 20, 2021 21:00 | 2d 3h | 2,466 | 3,210 |
| 8 | February 9, 2021 15:45 | February 10, 2021 09:15 | 17h 30m | 2,425 | 1,600 |
| 9 | March 26, 2021 08:45 | March 28, 2021 13:30 | 2d 4h | 2,422 | 8,696 |
| 10 | October 25, 2021 06:30 | November 7, 2021 23:45 | 13d 17h | 2,376 | 36K |
Outage episodes by size in 2021: 180 reached 100+ customers, 43 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 Delaware 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 |
|---|---|---|---|---|---|
| PECO Energy Co | 2021 | 3.1 hrs | 1.01 | 88 min | 0.83 |
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 Pennsylvania's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 277,130 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. Delaware County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Delaware County, PA 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/pennsylvania/delaware-county