County annual report · FIPS 42029
2019 Chester County, PA Power Outage Report
In 2019, customers in Chester County, PA went without power for an average of 5.3 hours, a total of 1.4M customer-hours (Pennsylvania average 4.7 hours). That ranks 37th worst of 67 Pennsylvania counties and 1038th of 2,945 nationally.
Compared with PA, the US and 2018
Coverage line is EAGLE-I's share of Pennsylvania customers tracked each year.
Biggest outages in Chester County, 2019
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | October 27, 2019 08:15 | November 5, 2019 03:00 | 8d 18h | 25,403 | 322K |
| 2 | July 11, 2019 11:45 | July 27, 2019 18:15 | 16d 6h | 12,957 | 153K |
| 3 | October 16, 2019 17:00 | October 21, 2019 06:30 | 4d 13h | 11,755 | 72K |
| 4 | June 27, 2019 12:45 | July 8, 2019 02:15 | 10d 13h | 10,110 | 148K |
| 5 | May 19, 2019 10:45 | June 1, 2019 07:00 | 12d 20h | 9,479 | 53K |
| 6 | February 23, 2019 13:15 | March 1, 2019 09:15 | 5d 20h | 6,966 | 79K |
| 7 | November 28, 2019 03:15 | November 30, 2019 15:45 | 2d 12h | 6,137 | 19K |
| 8 | July 27, 2019 19:00 | August 3, 2019 03:15 | 6d 8h | 6,083 | 28K |
| 9 | September 11, 2019 12:15 | September 18, 2019 09:15 | 6d 21h | 5,230 | 35K |
| 10 | April 26, 2019 19:45 | April 29, 2019 07:15 | 2d 11h | 3,895 | 27K |
Outage episodes by size in 2019: 144 reached 100+ customers, 52 reached 1,000+ customers, 4 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 Chester County reported on EIA Form 861 for 2019, 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 |
|---|---|---|---|---|---|
| PPL Electric Utilities Corp | 2018 | 6.6 hrs | 1.05 | 81 min | 0.73 |
| PECO Energy Co | 2018 | 10.7 hrs | 1.51 | 88 min | 0.90 |
| FirstEnergy Pennsylvania Electric Co | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 96% of Pennsylvania's customers in 2019; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 267,257 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. Chester County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Chester County, PA annual power outage report, 2019, 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/2019/pennsylvania/chester-county