massoutage

County annual report · FIPS 20131

2021 Nemaha County, KS Power Outage Report

In 2021, customers in Nemaha County, KS went without power for an average of 1.4 hours, a total of 10K customer-hours (Kansas average 4.0 hours). That ranks 77th worst of 94 Kansas counties and 2488th of 2,974 nationally.

Summary data CSVJSON
Avg hrs / customer
1.4
7,024 customers
Customer-hours out
10K
Peak customers out
537
Outages ≥1,000 out
0
0 of 10,000+ · 110 total
Longest outage
2d 22h
began December 15, 2021
Rank in state
77th/94
2488th of 2,974 US

Compared with KS, the US and 2020

Nemaha County, KS average hours without power per customer compared with state and national averages, 2021Nemaha County 1.4 hours, Kansas average 4.0 hours, US average 8.9 hours, Nemaha County, 2020 0.4 hoursNemaha CountyNemaha County1.4hKansas averageKansas average4.0hUS averageUS average8.9hNemaha County, 2020Nemaha County, 20200.4h
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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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Nemaha County, KS customer-hours without power by month, 2021Jan 137, Feb 3,070, Mar 68, Apr 343, May 961, Jun 480, Jul 220, Aug 1,951, Sep 67, Oct 44, Nov 335, Dec 2,45701k2k3k4k137Jan3,070Feb68Mar343Apr961May480Jun220Jul1,951Aug67Sep44Oct335Nov2,457Dec
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Customer-hours; February was the worst month.

Nemaha County year over year

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Nemaha County, KS: average hours without power per customer by year2015: 0.4h; 2016: 0.5h; 2017: 0.1h; 2018: 0.1h, coverage 71%; 2019: 1.0h, coverage 74%; 2020: 0.4h, coverage 79%; 2021: 1.4h, coverage 80%; 2022: 0.4h, coverage 59%; 2023: 0.5h; 2024: 0.3h; 2025: 0.2h00.511.50%50%100%0.4h20150.5h20160.1h20170.1h20181.0h20190.4h20201.4h20210.4h20220.5h20230.3h20240.2h2025
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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 Kansas customers tracked each year.

Biggest outages in Nemaha County, 2021

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

CSVJSON
#Started (UTC)Ended (UTC)DurationPeak outCustomer-hours
1February 16, 2021 18:30February 17, 2021 00:005h 30m5372,954
2April 22, 2021 23:15April 22, 2021 23:4530m442221
3August 21, 2021 00:45August 21, 2021 06:155h 30m4231,346
4May 19, 2021 10:30May 19, 2021 18:458h 15m312879
5June 11, 2021 17:45June 11, 2021 23:155h 30m220354
6August 21, 2021 08:45August 21, 2021 12:003h 15m178266
7February 16, 2021 13:00February 16, 2021 17:004h12690
8December 15, 2021 21:00December 18, 2021 19:152d 22h1212,350
9November 10, 2021 19:30November 10, 2021 23:304h117297
10September 6, 2021 08:00September 6, 2021 08:1515m9825

Outage episodes by size in 2021: 9 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 Nemaha County reported on EIA Form 861 for 2021, or their most recent earlier filing. Utility-wide figures, not county-specific.

CSVJSON
UtilityEIA yearSAIDISAIFISAIDI excl. major eventsSAIFI excl. major events
Evergy Metro20214.0 hrs1.571.6 hrs0.94
Evergy Kansas Central, Inc20215.8 hrs1.681.7 hrs1.02
Nemaha-Marshall E C A, Inc20183.8 hrs2.103.8 hrs2.10
Brown-Atchison E C A Inc-----
City of Sabetha - (KS)-----
City of Centralia - (KS)-----
City of Seneca - (KS)-----

About this data

  • Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 80% of Kansas's customers in 2021; utilities it does not see are not counted.
  • Hours per customer = outage customer-minutes ÷ 7,024 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. Nemaha County has data for 2015–2025.

Cite this report

MassOutage (massoutage.com), Nemaha County, KS 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/kansas/nemaha-county

summary CSVJSONyears CSVJSONmonths CSVJSONevents CSVJSONutilities CSVJSON