massoutage

County annual report · FIPS 19041

2018 Clay County, IA Power Outage Report

In 2018, customers in Clay County, IA went without power for an average of 0.9 hours, a total of 13K customer-hours (Iowa average 2.2 hours). That ranks 85th worst of 99 Iowa counties and 2332nd of 2,798 nationally.

Summary data CSVJSON
Avg hrs / customer
0.9
13,668 customers
Customer-hours out
13K
Peak customers out
787
Outages ≥1,000 out
0
0 of 10,000+ · 120 total
Longest outage
2d 16h
began December 7, 2018
Rank in state
85th/99
2332nd of 2,798 US

Compared with IA, the US and 2017

Clay County, IA average hours without power per customer compared with state and national averages, 2018Clay County 0.9 hours, Iowa average 2.2 hours, US average 5.6 hours, Clay County, 2017 0.2 hoursClay CountyClay County0.9hIowa averageIowa average2.2hUS averageUS average5.6hClay County, 2017Clay County, 20170.2h
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Average hours without power per customer in 2018; last bar is this county in 2017.

Month by month

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Clay County, IA customer-hours without power by month, 2018Jan 1,166, Feb 19, Mar 175, Apr 8,672, May 343, Jun 326, Jul 40, Aug 244, Sep 669, Oct 110, Nov 238, Dec 87702.5k5k7.5k10k1,166Jan19Feb175Mar8,672Apr343May326Jun40Jul244Aug669Sep110Oct238Nov877Dec
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Customer-hours; April 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, 2018

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
1April 14, 2018 12:30April 16, 2018 14:452d 2h7878,474
2January 22, 2018 11:15January 22, 2018 16:455h 30m3441,130
3December 14, 2018 06:45December 14, 2018 09:002h 15m308233
4September 6, 2018 19:00September 6, 2018 20:301h 30m191164
5December 1, 2018 23:45December 2, 2018 14:4515h106389
6May 1, 2018 18:30May 1, 2018 19:301h4848
7June 18, 2018 10:00June 18, 2018 13:153h 15m45145
8June 6, 2018 11:30June 6, 2018 20:309h39107
9August 5, 2018 09:00August 5, 2018 18:159h 15m36215
10May 28, 2018 23:45May 29, 2018 04:455h33105

Outage episodes by size in 2018: 5 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 2018, 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 89% of Iowa's customers in 2018; 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, 2018, 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/2018/iowa/clay-county

summary CSVJSONyears CSVJSONmonths CSVJSONevents CSVJSONutilities CSVJSON