massoutage

County annual report · FIPS 55095

2020 Polk County, WI Power Outage Report

In 2020, customers in Polk County, WI went without power for an average of 2.3 hours, a total of 76K customer-hours (Wisconsin average 1.8 hours). That ranks 22nd worst of 72 Wisconsin counties and 2132nd of 3,019 nationally.

Summary data CSVJSON
Avg hrs / customer
2.3
33,361 customers
Customer-hours out
76K
Peak customers out
3,443
Outages ≥1,000 out
8
0 of 10,000+ · 576 total
Longest outage
1d 14h
began July 18, 2020
Rank in state
22nd/72
2132nd of 3,019 US

Compared with WI, the US and 2019

Polk County, WI average hours without power per customer compared with state and national averages, 2020Polk County 2.3 hours, Wisconsin average 1.8 hours, US average 8.7 hours, Polk County, 2019 14.6 hoursPolk CountyPolk County2.3hWisconsin averageWisconsin average1.8hUS averageUS average8.7hPolk County, 2019Polk County, 201914.6h
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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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Polk County, WI customer-hours without power by month, 2020Jan 2,298, Feb 290, Mar 13K, Apr 2,088, May 2,800, Jun 2,587, Jul 31K, Aug 8,348, Sep 2,947, Oct 6,246, Nov 317, Dec 4,156010k20k30k40k2,298Jan290Feb13KMar2,088Apr2,800May2,587Jun31KJul8,348Aug2,947Sep6,246Oct317Nov4,156Dec
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Customer-hours; July was the worst month.

Polk County year over year

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Polk County, WI: average hours without power per customer by year2015: 0.4h; 2016: 0.8h; 2017: 2.8h; 2018: 1.5h, coverage 83%; 2019: 14.6h, coverage 84%; 2020: 2.3h, coverage 84%; 2021: 1.3h, coverage 85%; 2022: 1.9h, coverage 85%; 2023: 2.5h; 2024: 2.5h; 2025: 1.8h0510150%50%100%0.4h20150.8h20162.8h20171.5h201814.6h20192.3h20201.3h20211.9h20222.5h20232.5h20241.8h2025
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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 Polk County, 2020

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

CSVJSON
#Started (UTC)Ended (UTC)DurationPeak outCustomer-hours
1March 18, 2020 12:15March 18, 2020 16:454h 30m3,44312K
2July 10, 2020 02:30July 10, 2020 17:0014h 30m3,42914K
3July 4, 2020 17:00July 4, 2020 19:002h3,4082,563
4July 4, 2020 00:45July 4, 2020 02:452h3,4073,412
5April 7, 2020 16:00April 7, 2020 21:005h3,395856
6July 2, 2020 19:00July 2, 2020 20:151h 15m2,2501,125
7August 20, 2020 18:00August 20, 2020 20:302h 30m1,4321,454
8July 18, 2020 07:15July 19, 2020 22:001d 14h1,0568,343
9October 30, 2020 13:45October 30, 2020 18:304h 45m9283,109
10December 23, 2020 21:15December 24, 2020 14:3017h 15m9153,932

Outage episodes by size in 2020: 35 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 Polk County reported on EIA Form 861 for 2020, 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 Co20203.9 hrs1.632.8 hrs1.52
Barron Electric Coop20204.7 hrs1.683.5 hrs1.47
Polk-Burnett Electric Coop20203.5 hrs1.7542 min0.70
St Croix Electric Coop20181.8 hrs0.691.7 hrs0.68
Northwestern Wisconsin Elec Co-----

About this data

  • Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 84% of Wisconsin's customers in 2020; utilities it does not see are not counted.
  • Hours per customer = outage customer-minutes ÷ 33,361 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. Polk County has data for 2015–2025.

Cite this report

MassOutage (massoutage.com), Polk County, WI 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/wisconsin/polk-county

summary CSVJSONyears CSVJSONmonths CSVJSONevents CSVJSONutilities CSVJSON