massoutage

County annual report · FIPS 42097

2021 Northumberland County, PA Power Outage Report

In 2021, customers in Northumberland County, PA went without power for an average of 3.3 hours, a total of 151K customer-hours (Pennsylvania average 4.1 hours). That ranks 48th worst of 67 Pennsylvania counties and 1759th of 2,974 nationally.

Summary data CSVJSON
Avg hrs / customer
3.3
46,261 customers
Customer-hours out
151K
Peak customers out
5,296
Outages ≥1,000 out
8
0 of 10,000+ · 661 total
Longest outage
3d 6h
began September 1, 2021
Rank in state
48th/67
1759th of 2,974 US

Compared with PA, the US and 2020

Northumberland County, PA average hours without power per customer compared with state and national averages, 2021Northumberland County 3.3 hours, Pennsylvania average 4.1 hours, US average 8.9 hours, Northumberland County, 2020 3.3 hoursNorthumberland CountyNorthumberland County3.3hPennsylvania averagePennsylvania average4.1hUS averageUS average8.9hNorthumberland County, 2020Northumberland Count…3.3h
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Average hours without power per customer in 2021; last bar is this county in 2020.

Month by month

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Northumberland County, PA customer-hours without power by month, 2021Jan 5,916, Feb 3,531, Mar 18K, Apr 2,131, May 8,052, Jun 4,655, Jul 22K, Aug 15K, Sep 45K, Oct 9,453, Nov 7,452, Dec 10K020k40k60k5,916Jan3,531Feb18KMar2,131Apr8,052May4,655Jun22KJul15KAug45KSep9,453Oct7,452Nov10KDec
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Customer-hours; September was the worst month.

Northumberland County year over year

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Northumberland County, PA: average hours without power per customer by year2015: 1.3h; 2016: 1.9h; 2017: 3.5h; 2018: 4.3h, coverage 95%; 2019: 5.1h, coverage 96%; 2020: 3.3h, coverage 98%; 2021: 3.3h, coverage 98%; 2022: 3.1h, coverage 98%; 2023: 3.1h; 2024: 9.7h; 2025: 5.0h02.557.5100%50%100%1.3h20151.9h20163.5h20174.3h20185.1h20193.3h20203.3h20213.1h20223.1h20239.7h20245.0h2025
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Average hours without power per customer. Line: EAGLE-I coverage, share of customers tracked (right axis).

Coverage line is EAGLE-I's share of Pennsylvania customers tracked each year.

Biggest outages in Northumberland County, 2021

The 10 outage episodes with the most customers out at once. Times are UTC.

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#Started (UTC)Ended (UTC)DurationPeak outCustomer-hours
1March 1, 2021 20:45March 3, 2021 07:451d 11h5,2965,462
2July 17, 2021 21:00July 19, 2021 13:301d 16h2,15713K
3July 13, 2021 20:30July 15, 2021 03:151d 6h1,8141,548
4January 4, 2021 14:00January 4, 2021 14:1515m1,519380
5September 1, 2021 11:30September 4, 2021 17:453d 6h1,38936K
6September 22, 2021 17:00September 24, 2021 18:302d 1h1,2435,189
7May 28, 2021 12:15May 28, 2021 14:302h 15m1,137447
8December 18, 2021 14:30December 18, 2021 18:454h 15m1,137587
9October 27, 2021 12:15October 27, 2021 16:003h 45m923248
10March 22, 2021 13:45March 22, 2021 14:451h921921

Outage episodes by size in 2021: 80 reached 100+ customers, 8 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 Northumberland County reported on EIA Form 861 for 2021, or their most recent earlier filing. Utility-wide figures, not county-specific.

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UtilityEIA yearSAIDISAIFISAIDI excl. major eventsSAIFI excl. major events
PPL Electric Utilities Corp20212.9 hrs0.9385 min0.64
Citizens Electric Co - (PA)-----
Borough of Watsontown - (PA)-----

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 ÷ 46,261 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. Northumberland County has data for 2015–2025.

Cite this report

MassOutage (massoutage.com), Northumberland 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/northumberland-county

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