County annual report · FIPS 42101
2021 Philadelphia County, PA Power Outage Report
In 2021, customers in Philadelphia County, PA went without power for an average of 1.6 hours, a total of 1.3M customer-hours (Pennsylvania average 4.1 hours). That ranks 66th worst of 67 Pennsylvania counties and 2421st 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 Philadelphia 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 | January 24, 2021 23:45 | August 8, 2021 19:30 | 195d 19h | 27,936 | 834K |
| 2 | August 9, 2021 00:45 | October 21, 2021 02:00 | 73d 1h | 6,776 | 268K |
| 3 | October 25, 2021 12:15 | December 31, 2021 00:15 | 66d 12h | 5,472 | 119K |
| 4 | October 21, 2021 05:16 | October 25, 2021 07:00 | 4d 1h | 4,091 | 7,693 |
| 5 | January 1, 2021 00:00 | January 23, 2021 06:00 | 22d 6h | 2,084 | 44K |
| 6 | August 8, 2021 20:30 | August 8, 2021 22:15 | 1h 45m | 494 | 140 |
| 7 | January 24, 2021 05:30 | January 24, 2021 11:15 | 5h 45m | 183 | 195 |
| 8 | January 23, 2021 14:15 | January 24, 2021 03:15 | 13h | 98 | 367 |
| 9 | January 24, 2021 12:30 | January 24, 2021 14:15 | 1h 45m | 44 | 30 |
| 10 | October 21, 2021 03:15 | October 21, 2021 04:15 | 1h | 14 | 7 |
Outage episodes by size in 2021: 7 reached 100+ customers, 5 reached 1,000+ customers, 1 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 Philadelphia 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 |
| Philadelphia Authority for Industrial Development | - | - | - | - | - |
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 ÷ 802,812 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. Philadelphia County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Philadelphia 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/philadelphia-county