County annual report · FIPS 42029
2024 Chester County, PA Power Outage Report
In 2024, customers in Chester County, PA went without power for an average of 16.1 hours, a total of 4.3M customer-hours (Pennsylvania average 7.0 hours). That ranks 10th worst of 67 Pennsylvania counties and 632nd of 2,990 nationally.
Compared with PA, the US and 2023
Coverage line is EAGLE-I's share of Pennsylvania customers tracked each year.
Biggest outages in Chester County, 2024
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 29, 2024 18:15 | September 18, 2024 19:30 | 81d 1h | 77,059 | 2.6M |
| 2 | January 6, 2024 13:15 | January 18, 2024 19:15 | 12d 6h | 65,902 | 1.2M |
| 3 | March 23, 2024 12:00 | April 15, 2024 18:00 | 23d 6h | 7,800 | 62K |
| 4 | June 17, 2024 11:30 | June 29, 2024 09:00 | 11d 21h | 5,949 | 59K |
| 5 | February 9, 2024 13:15 | February 18, 2024 02:30 | 8d 13h | 4,352 | 31K |
| 6 | February 20, 2024 13:15 | March 9, 2024 07:30 | 17d 18h | 3,983 | 42K |
| 7 | March 10, 2024 00:45 | March 23, 2024 02:30 | 13d 1h | 3,714 | 29K |
| 8 | June 14, 2024 18:45 | June 16, 2024 14:15 | 1d 19h | 3,694 | 12K |
| 9 | October 9, 2024 01:45 | October 21, 2024 04:00 | 12d 2h | 3,347 | 21K |
| 10 | September 25, 2024 13:00 | October 9, 2024 00:30 | 13d 11h | 3,196 | 27K |
Outage episodes by size in 2024: 48 reached 100+ customers, 30 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 Chester County reported on EIA Form 861 for 2024, 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 |
|---|---|---|---|---|---|
| FirstEnergy Pennsylvania Electric Co | 2024 | 6.7 hrs | 1.85 | 3.7 hrs | 1.49 |
| PPL Electric Utilities Corp | 2024 | 7.6 hrs | 1.25 | 1.5 hrs | 0.66 |
| PECO Energy Co | 2024 | 3.5 hrs | 0.97 | 60 min | 0.67 |
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 Pennsylvania's customers in 2024; 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, 2024, 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/2024/pennsylvania/chester-county