massoutage

County annual report · FIPS 20087

2023 Jefferson County, KS Power Outage Report

In 2023, customers in Jefferson County, KS went without power for an average of 4.9 hours, a total of 51K customer-hours (Kansas average 4.3 hours). That ranks 25th worst of 94 Kansas counties and 1497th of 2,977 nationally.

Summary data CSVJSON
Avg hrs / customer
4.9
10,486 customers
Customer-hours out
51K
Peak customers out
2,229
Outages ≥1,000 out
3
0 of 10,000+ · 350 total
Longest outage
2d 15h
began July 14, 2023
Rank in state
25th/94
1497th of 2,977 US

Compared with KS, the US and 2022

Jefferson County, KS average hours without power per customer compared with state and national averages, 2023Jefferson County 4.9 hours, Kansas average 4.3 hours, US average 7.1 hours, Jefferson County, 2022 1.8 hoursJefferson CountyJefferson County4.9hKansas averageKansas average4.3hUS averageUS average7.1hJefferson County, 2022Jefferson County, 20…1.8h
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Average hours without power per customer in 2023; last bar is this county in 2022.

Month by month

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Jefferson County, KS customer-hours without power by month, 2023Jan 1,025, Feb 2,041, Mar 261, Apr 524, May 3,682, Jun 2,213, Jul 38K, Aug 1,012, Sep 320, Oct 988, Nov 236, Dec 551010k20k30k40k1,025Jan2,041Feb261Mar524Apr3,682May2,213Jun38KJul1,012Aug320Sep988Oct236Nov551Dec
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Customer-hours; July was the worst month.

Jefferson County year over year

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Jefferson County, KS: average hours without power per customer by year2015: 1.8h; 2016: 1.2h; 2017: 2.3h; 2018: 3.5h, coverage 71%; 2019: 7.0h, coverage 74%; 2020: 3.4h, coverage 79%; 2021: 6.7h, coverage 80%; 2022: 1.8h, coverage 59%; 2023: 4.9h; 2024: 3.4h; 2025: 1.8h024680%50%100%1.8h20151.2h20162.3h20173.5h20187.0h20193.4h20206.7h20211.8h20224.9h20233.4h20241.8h2025
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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 Kansas customers tracked each year.

Biggest outages in Jefferson County, 2023

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

CSVJSON
#Started (UTC)Ended (UTC)DurationPeak outCustomer-hours
1July 14, 2023 20:00July 17, 2023 11:302d 15h2,22917K
2July 31, 2023 00:30July 31, 2023 20:4520h 15m1,4956,951
3July 1, 2023 01:45July 2, 2023 18:301d 16h1,45014K
4February 27, 2023 06:45February 27, 2023 16:159h 30m9071,897
5June 24, 2023 14:00June 24, 2023 14:1515m690173
6January 9, 2023 20:30January 9, 2023 21:0030m474218
7May 25, 2023 05:15May 25, 2023 13:007h 45m4193,247
8June 28, 2023 21:15June 29, 2023 01:154h4191,572
9August 13, 2023 11:45August 13, 2023 22:1510h 30m321121
10October 24, 2023 21:00October 24, 2023 22:001h319240

Outage episodes by size in 2023: 14 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 Jefferson County reported on EIA Form 861 for 2023, or their most recent earlier filing. Utility-wide figures, not county-specific.

CSVJSON
UtilityEIA yearSAIDISAIFISAIDI excl. major eventsSAIFI excl. major events
Evergy Metro20237.8 hrs1.4184 min0.92
Evergy Kansas Central, Inc20233.3 hrs1.261.6 hrs0.99
FreeState Electric Coop20236.7 hrs-6.4 hrs-
Brown-Atchison E C A Inc-----

About this data

  • Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about n/a of Kansas's customers in 2023; utilities it does not see are not counted.
  • Hours per customer = outage customer-minutes ÷ 10,486 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. Jefferson County has data for 2015–2025.

Cite this report

MassOutage (massoutage.com), Jefferson County, KS annual power outage report, 2023, 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/2023/kansas/jefferson-county

summary CSVJSONyears CSVJSONmonths CSVJSONevents CSVJSONutilities CSVJSON