massoutage

County annual report · FIPS 55085

2021 Oneida County, WI Power Outage Report

In 2021, customers in Oneida County, WI went without power for an average of 32.9 hours, a total of 732K customer-hours (Wisconsin average 4.7 hours). That ranks 3rd worst of 72 Wisconsin counties and 275th of 2,974 nationally.

Summary data CSVJSON
Avg hrs / customer
32.9
22,258 customers
Customer-hours out
732K
Peak customers out
16,909
Outages ≥1,000 out
9
2 of 10,000+ · 541 total
Longest outage
3d 18h
began December 16, 2021
Rank in state
3rd/72
275th of 2,974 US

Compared with WI, the US and 2020

Oneida County, WI average hours without power per customer compared with state and national averages, 2021Oneida County 32.9 hours, Wisconsin average 4.7 hours, US average 8.9 hours, Oneida County, 2020 4.8 hoursOneida CountyOneida County32.9hWisconsin averageWisconsin average4.7hUS averageUS average8.9hOneida County, 2020Oneida County, 20204.8h
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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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Oneida County, WI customer-hours without power by month, 2021Jan 183, Feb 918, Mar 14K, Apr 1,483, May 3,322, Jun 59K, Jul 260K, Aug 6,095, Sep 6,211, Oct 2,409, Nov 6,205, Dec 371K0100k200k300k400k183Jan918Feb14KMar1,483Apr3,322May59KJun260KJul6,095Aug6,211Sep2,409Oct6,205Nov371KDec
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Customer-hours; December was the worst month.

Oneida County year over year

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Oneida County, WI: average hours without power per customer by year2015: 10.4h; 2016: 35.0h; 2017: 29.7h; 2018: 3.5h, coverage 83%; 2019: 28.3h, coverage 84%; 2020: 4.8h, coverage 84%; 2021: 32.9h, coverage 85%; 2022: 21.6h, coverage 85%; 2023: 9.3h; 2024: 9.7h; 2025: 30.1h0102030400%50%100%10.4h201535.0h201629.7h20173.5h201828.3h20194.8h202032.9h202121.6h20229.3h20239.7h202430.1h2025
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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 Wisconsin customers tracked each year.

Biggest outages in Oneida 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
1December 16, 2021 04:45December 19, 2021 23:003d 18h16,909367K
2July 27, 2021 01:30July 27, 2021 10:309h13,68858K
3July 27, 2021 14:00July 31, 2021 02:003d 12h6,375198K
4March 11, 2021 05:45March 11, 2021 19:0013h 15m3,3279,216
5June 10, 2021 17:15June 12, 2021 21:302d 4h3,11454K
6December 7, 2021 11:45December 7, 2021 16:004h 15m1,4683,164
7March 28, 2021 08:30March 28, 2021 19:0010h 30m1,1954,217
8May 25, 2021 22:00May 26, 2021 02:004h1,1821,893
9November 11, 2021 08:30November 11, 2021 21:1512h 45m1,0652,032
10August 7, 2021 21:30August 8, 2021 05:007h 30m9581,252

Outage episodes by size in 2021: 52 reached 100+ customers, 9 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 Oneida 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
Northern States Power Co20216.7 hrs1.602.2 hrs1.10
Wisconsin Public Service Corp20219.3 hrs1.461.6 hrs0.83
Price Electric Coop Inc20134.5 hrs4.504.5 hrs4.50

About this data

  • Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 85% of Wisconsin's customers in 2021; utilities it does not see are not counted.
  • Hours per customer = outage customer-minutes ÷ 22,258 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. Oneida County has data for 2015–2025.

Cite this report

MassOutage (massoutage.com), Oneida County, WI 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/wisconsin/oneida-county

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