massoutage

County annual report · FIPS 19041

2021 Clay County, IA Power Outage Report

In 2021, customers in Clay County, IA went without power for an average of 0.3 hours, a total of 3,707 customer-hours (Iowa average 2.7 hours). That ranks 99th worst of 99 Iowa counties and 2867th of 2,974 nationally.

Summary data CSVJSON
Avg hrs / customer
0.3
13,668 customers
Customer-hours out
3,707
Peak customers out
312
Outages ≥1,000 out
0
0 of 10,000+ · 151 total
Longest outage
1d 22h
began April 10, 2021
Rank in state
99th/99
2867th of 2,974 US

Compared with IA, the US and 2020

Clay County, IA average hours without power per customer compared with state and national averages, 2021Clay County 0.3 hours, Iowa average 2.7 hours, US average 8.9 hours, Clay County, 2020 0.3 hoursClay CountyClay County0.3hIowa averageIowa average2.7hUS averageUS average8.9hClay County, 2020Clay County, 20200.3h
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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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Clay County, IA customer-hours without power by month, 2021Jan 228, Feb 31, Mar 141, Apr 268, May 145, Jun 238, Jul 786, Aug 315, Sep 273, Oct 118, Nov 121, Dec 1,04505001k1.5k228Jan31Feb141Mar268Apr145May238Jun786Jul315Aug273Sep118Oct121Nov1,045Dec
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Customer-hours; December was the worst month.

Clay County year over year

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Clay County, IA: average hours without power per customer by year2015: 0.3h; 2016: 0.3h; 2017: 0.2h; 2018: 0.9h, coverage 89%; 2019: 0.5h, coverage 89%; 2020: 0.3h, coverage 91%; 2021: 0.3h, coverage 91%; 2022: 0.7h, coverage 91%; 2023: 0.4h; 2024: 0.4h; 2025: 0.5h00.30.50.810%50%100%0.3h20150.3h20160.2h20170.9h20180.5h20190.3h20200.3h20210.7h20220.4h20230.4h20240.5h2025
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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 Iowa customers tracked each year.

Biggest outages in Clay 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
1July 2, 2021 03:45July 2, 2021 04:451h312312
2July 12, 2021 07:45July 12, 2021 09:151h 30m224336
3December 15, 2021 23:45December 17, 2021 01:001d 1h166763
4September 19, 2021 16:45September 19, 2021 19:453h115180
5May 20, 2021 04:45May 20, 2021 05:3045m11130
6December 3, 2021 18:45December 3, 2021 21:152h 30m109273
7January 3, 2021 11:30January 3, 2021 13:452h 15m97213
8April 25, 2021 14:00April 25, 2021 15:451h 45m78119
9May 20, 2021 00:45May 20, 2021 01:0015m6817
10October 13, 2021 19:45October 14, 2021 00:154h 30m6574

Outage episodes by size in 2021: 6 reached 100+ customers, 0 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 Clay County reported on EIA Form 861 for 2021, or their most recent earlier filing. Utility-wide figures, not county-specific.

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About this data

  • Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 91% of Iowa's customers in 2021; utilities it does not see are not counted.
  • Hours per customer = outage customer-minutes ÷ 13,668 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. Clay County has data for 2015–2025.

Cite this report

MassOutage (massoutage.com), Clay County, IA 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/iowa/clay-county

summary CSVJSONyears CSVJSONmonths CSVJSONevents CSVJSONutilities CSVJSON