massoutage

County annual report · FIPS 19005

2018 Allamakee County, IA Power Outage Report

In 2018, customers in Allamakee County, IA went without power for an average of 4.0 hours, a total of 27K customer-hours (Iowa average 2.2 hours). That ranks 20th worst of 99 Iowa counties and 1256th of 2,798 nationally.

Summary data CSVJSON
Avg hrs / customer
4.0
6,750 customers
Customer-hours out
27K
Peak customers out
1,346
Outages ≥1,000 out
3
0 of 10,000+ · 182 total
Longest outage
15h
began May 3, 2018
Rank in state
20th/99
1256th of 2,798 US

Compared with IA, the US and 2017

Allamakee County, IA average hours without power per customer compared with state and national averages, 2018Allamakee County 4.0 hours, Iowa average 2.2 hours, US average 5.6 hours, Allamakee County, 2017 8.8 hoursAllamakee CountyAllamakee County4.0hIowa averageIowa average2.2hUS averageUS average5.6hAllamakee County, 2017Allamakee County, 20…8.8h
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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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Allamakee County, IA customer-hours without power by month, 2018Jan 29, Feb 137, Mar 30, Apr 352, May 9,100, Jun 3,275, Jul 4,663, Aug 6,867, Sep 748, Oct 491, Nov 1,155, Dec 18802.5k5k7.5k10k29Jan137Feb30Mar352Apr9,100May3,275Jun4,663Jul6,867Aug748Sep491Oct1,155Nov188Dec
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Customer-hours; May was the worst month.

Allamakee County year over year

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Allamakee County, IA: average hours without power per customer by year2015: 2.0h; 2016: 3.2h; 2017: 8.8h; 2018: 4.0h, coverage 89%; 2019: 3.7h, coverage 89%; 2020: 1.8h, coverage 91%; 2021: 5.6h, coverage 91%; 2022: 4.5h, coverage 91%; 2023: 2.4h; 2024: 5.2h; 2025: 2.1h02.557.5100%50%100%2.0h20153.2h20168.8h20174.0h20183.7h20191.8h20205.6h20214.5h20222.4h20235.2h20242.1h2025
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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 Iowa customers tracked each year.

Biggest outages in Allamakee County, 2018

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

CSVJSON
#Started (UTC)Ended (UTC)DurationPeak outCustomer-hours
1June 25, 2018 01:45June 25, 2018 05:003h 15m1,3461,366
2August 5, 2018 12:15August 5, 2018 16:003h 45m1,3455,044
3June 30, 2018 22:00July 1, 2018 08:4510h 45m1,0995,698
4September 16, 2018 13:00September 16, 2018 15:302h 30m998577
5May 3, 2018 23:30May 4, 2018 14:3015h9664,397
6November 10, 2018 06:15November 10, 2018 08:001h 45m6771,016
7May 6, 2018 04:30May 6, 2018 08:153h 45m6411,714
8May 27, 2018 19:30May 27, 2018 21:151h 45m494864
9August 17, 2018 00:15August 17, 2018 04:304h 15m4471,282
10May 15, 2018 15:30May 15, 2018 21:456h 15m242374

Outage episodes by size in 2018: 16 reached 100+ customers, 3 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 Allamakee County reported on EIA Form 861 for 2018, or their most recent earlier filing. Utility-wide figures, not county-specific.

CSVJSON
UtilityEIA yearSAIDISAIFISAIDI excl. major eventsSAIFI excl. major events
MiEnergy Cooperative20182.3 hrs0.8286 min0.70
Allamakee-Clayton El Coop, Inc20181.5 hrs0.731.5 hrs0.73
Interstate Power and Light Co-----
Alliant Energy (Interstate Power & Light)-----

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 ÷ 6,750 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. Allamakee County has data for 2015–2025.

Cite this report

MassOutage (massoutage.com), Allamakee 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/allamakee-county

summary CSVJSONyears CSVJSONmonths CSVJSONevents CSVJSONutilities CSVJSON