massoutage

County annual report · FIPS 42085

2020 Mercer County, PA Power Outage Report

In 2020, customers in Mercer County, PA went without power for an average of 3.5 hours, a total of 169K customer-hours (Pennsylvania average 6.5 hours). That ranks 43rd worst of 67 Pennsylvania counties and 1729th of 3,019 nationally.

Summary data CSVJSON
Avg hrs / customer
3.5
48,402 customers
Customer-hours out
169K
Peak customers out
6,060
Outages ≥1,000 out
11
0 of 10,000+ · 698 total
Longest outage
3d 6h
began November 15, 2020
Rank in state
43rd/67
1729th of 3,019 US

Compared with PA, the US and 2019

Mercer County, PA average hours without power per customer compared with state and national averages, 2020Mercer County 3.5 hours, Pennsylvania average 6.5 hours, US average 8.7 hours, Mercer County, 2019 6.2 hoursMercer CountyMercer County3.5hPennsylvania averagePennsylvania average6.5hUS averageUS average8.7hMercer County, 2019Mercer County, 20196.2h
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Average hours without power per customer in 2020; last bar is this county in 2019.

Month by month

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Mercer County, PA customer-hours without power by month, 2020Jan 18K, Feb 4,049, Mar 12K, Apr 4,967, May 5,550, Jun 32K, Jul 14K, Aug 17K, Sep 6,889, Oct 4,301, Nov 44K, Dec 5,404020k40k60k18KJan4,049Feb12KMar4,967Apr5,550May32KJun14KJul17KAug6,889Sep4,301Oct44KNov5,404Dec
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Customer-hours; November was the worst month.

Mercer County year over year

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Mercer County, PA: average hours without power per customer by year2015: 3.5h; 2016: 3.4h; 2017: 6.7h; 2018: 4.6h, coverage 95%; 2019: 6.2h, coverage 96%; 2020: 3.5h, coverage 98%; 2021: 3.9h, coverage 98%; 2022: 7.6h, coverage 98%; 2023: 23.4h; 2024: 6.6h; 2025: 3.7h01020300%50%100%3.5h20153.4h20166.7h20174.6h20186.2h20193.5h20203.9h20217.6h202223.4h20236.6h20243.7h2025
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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 Mercer County, 2020

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

CSVJSON
#Started (UTC)Ended (UTC)DurationPeak outCustomer-hours
1June 2, 2020 10:15June 3, 2020 02:0015h 45m6,0601,778
2May 30, 2020 14:15June 1, 2020 07:451d 17h4,1891,912
3June 10, 2020 13:15June 12, 2020 18:002d 4h3,34923K
4November 15, 2020 18:15November 19, 2020 00:453d 6h2,72238K
5August 27, 2020 20:30August 30, 2020 08:302d 12h2,56111K
6March 29, 2020 06:00March 30, 2020 19:151d 13h2,4029,970
7September 20, 2020 08:00September 20, 2020 14:456h 45m2,0921,805
8January 12, 2020 08:00January 14, 2020 07:001d 23h1,98514K
9March 12, 2020 12:15March 12, 2020 15:153h1,046861
10June 18, 2020 20:00June 18, 2020 23:303h 30m1,004709

Outage episodes by size in 2020: 75 reached 100+ customers, 11 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 Mercer County reported on EIA Form 861 for 2020, or their most recent earlier filing. Utility-wide figures, not county-specific.

CSVJSON
UtilityEIA yearSAIDISAIFISAIDI excl. major eventsSAIFI excl. major events
Pennsylvania Power Co20203.0 hrs0.981.6 hrs0.79
FirstEnergy Pennsylvania Electric Co-----
Central Electric Coop, Inc - (PA)-----
Northwestern Rural E C A, Inc - (PA)-----
Borough of Grove City - (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 2020; utilities it does not see are not counted.
  • Hours per customer = outage customer-minutes ÷ 48,402 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. Mercer County has data for 2015–2025.

Cite this report

MassOutage (massoutage.com), Mercer County, PA annual power outage report, 2020, 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/2020/pennsylvania/mercer-county

summary CSVJSONyears CSVJSONmonths CSVJSONevents CSVJSONutilities CSVJSON