massoutage

2021 Pennsylvania Power Outage Report

In 2021, the average Pennsylvania customer went without power for about 4.1 hours — the 27th worst of any US state that year, below the state's decade average. Figures from DOE/ORNL EAGLE-I.

Avg hrs / customer
4.1
Peak customers out
49,121
Rank (worst state)
27th
Counties affected
20

Pennsylvania outages over the decade

Average hours without power per customer, 2021 highlighted.

3.2h20152.5h20163.2h20178.3h20184.7h20196.5h20204.1h20213.7h20224.9h20237.0h20249.8h2025

Hardest-hit Pennsylvania counties in 2021

By peak customers out during the year's worst event.

1Montgomery County49,1212Allegheny County31,1373Philadelphia County27,9364York County27,6625Lebanon County25,2806Erie County20,4447Adams County14,5818Bucks County14,5669Monroe County14,38310Schuylkill County14,37811Lawrence County14,05512Berks County13,87513Dauphin County13,49914Washington County13,02715Susquehanna County11,85216Chester County11,80717Lehigh County11,66318Clearfield County11,60119Indiana County11,18920Cambria County11,072

Biggest Pennsylvania outages of 2021

CountyBeganPeak customers out
Montgomery CountyJuly 17, 202149,121
Montgomery CountySeptember 1, 202144,233
Allegheny CountyAugust 10, 202131,137
Philadelphia CountyJanuary 24, 202127,936
York CountyJanuary 12, 202127,662
Allegheny CountyJuly 4, 202127,219
Lebanon CountyMay 26, 202125,280
Allegheny CountyJune 13, 202125,092
Erie CountyMay 20, 202120,444
Erie CountyJune 14, 202116,494
Pennsylvania by year:20252024202320222020201920182017
Other states in 2021:LAMIWVTXORMS

Part of the 2021 US Power Outage Report. Source: DOE/ORNL EAGLE-I. “Avg hours per customer” is a SAIDI-like measure (outage customer-minutes ÷ tracked customers); coverage varies by year.