– 0% of Clay out 0 customers out in Missouri

Power outage history

Clay County Missouri

3.8hours

without power for the average customer in a typical year, 2018–2025

77th most of 110 in Missouri 43% below the national median

Worst outage on record Jun 18, 2017 22% of customers out · 90% back in 37 hours

Hours without power, average customer per year 3.8h / yr State average 5.2 h · national median 6.6 h

Major outages a year 1.1 Peaks over 10% of customers or 50,000 customers

Typical time to restore 90% 10hours Median across major outages, from the peak

Longest single outage 2.0days Jun 17, 2017, over 1% of customers out

Outage hours on storm days 58% Share falling on days with a NOAA storm report here

Worst year 2021 7.0 hours without power, average customer

Electricity customers 96,031 ORNL customer model · 8 well-covered years

Every day since 2015

Eleven years, one night at a time

Each cell is a day. The brighter it is, the larger the share of Clay's customers who were without power at that day's worst moment.

20152016201720182019202020212022202320242025

0%100% of customers out

Year by year

Hours in the dark, per customer

2021 was the worst well-recorded year, at 7.0 hours for the average customer. Hatched years have a thin record and are left out of the averages.

Clay, hours without power per customer

ClayUS median countyMissouri average

The record

The biggest outages since 2015

Ranked by customer-hours lost: customers out multiplied by how long they stayed out. Times are local.

Began	Storm	Peak out	Share	Lasted	90% restored	Customer-hours
Jun 17, 2017	Thunderstorms	20,929	22%	2.0 d	37 h	340k
Jun 26, 2015	Thunderstorms	17,010	18%	45 h	37 h	309k
Jun 8, 2022	Thunderstorms	25,403	26%	35 h	19 h	286k
Jul 22, 2017	Thunderstorms	17,679	18%	35 h	25 h	227k
Oct 14, 2017	Thunderstorms	21,211	22%	31 h	20 h	208k
Jun 11, 2021	Thunderstorms	13,332	14%	45 h	44 h	207k
Jul 14, 2023	Thunderstorms	11,424	12%	31 h	29 h	170k
May 19, 2024	No storm report	6,137	6%	28 h	33 h	80k
Aug 10, 2021	No storm report	20,234	21%	10 h	6.0 h	76k
Jul 31, 2024	Thunderstorms	16,582	17%	11 h	9.0 h	73k
Dec 15, 2021	Thunderstorms	6,751	7%	26 h	1.0 h	73k
Jul 2, 2024	No storm report	8,507	9%	18 h	17 h	71k
Jul 5, 2023	No storm report	12,748	13%	12 h	7.5 h	66k
Jul 7, 2016	Thunderstorms	10,145	11%	11 h	10 h	58k
Aug 21, 2017	Flooding	7,893	8%	13 h	9.8 h	57k
Jan 12, 2019	Winter storm	4,386	5%	25 h	–	55k
Mar 4, 2025	No storm report	8,345	9%	13 h	8.2 h	47k
Sep 23, 2023	Thunderstorms	6,943	7%	13 h	12 h	38k
Feb 16, 2021	Winter storm	12,152	13%	5.5 h	4.5 h	36k
May 26, 2016	Thunderstorms	5,816	6%	13 h	12 h	35k
Jul 10, 2021	No storm report	8,367	9%	9.2 h	9.8 h	33k
Jul 10, 2019	No storm report	4,960	5%	8.5 h	11 h	25k
Aug 15, 2019	Thunderstorms	9,716	10%	5.5 h	3.8 h	23k
Nov 18, 2024	No storm report	10,585	11%	11 h	30 min	21k
Nov 11, 2015	Windstorm	3,027	3%	9.5 h	–	19k
Jul 30, 2023	Thunderstorms	3,600	4%	8.0 h	–	19k
Jun 25, 2017	No storm report	13,656	14%	1.8 h	1.2 h	17k
May 31, 2022	No storm report	6,859	7%	6.2 h	2.2 h	15k
May 19, 2025	Thunderstorms	4,246	4%	6.2 h	–	13k
Jun 16, 2022	No storm report	4,539	5%	5.2 h	–	13k

After the peak

How fast the lights come back

Each line is one major outage, from its peak. The amber line is the typical path.

When it happens

The outage clock

Customer-hours out by month (rings, January innermost) and local hour, 2018–2025.

What was happening

Weather behind the outages

Each outage is matched to NOAA storm reports for Clay from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.

Thunderstorms 51%
No storm on record 42%
Winter storm 5.9%
Flooding 0.8%

Who keeps the lights on

Utilities serving Clay

As each utility reports to the Energy Information Administration for its whole Missouri territory, not this county alone. Outage minutes include major storm days.

Utility	Type	Outage min / yr	Excl. major storms	Outages / yr	Residential ¢/kWh	Customers
Union Electric Co	Investor Owned	594	119	1.18	13.3	1.1M
Evergy Missouri West	Investor Owned	184	104	1.49	12.1	309k
Evergy Metro	Investor Owned	178	99	1.50	13.6	276k
Platte-Clay Electric Coop, Inc	Cooperative	79	59	1.07	12.9	24k

EIA Form 861, latest year each utility reported. Outage minutes are SAIDI, the yearly minutes the average customer goes without power; outages a year are SAIFI.

Next door

Neighbouring counties

Jackson 8.0 h
Ray 5.2 h
Wyandotte, KS 4.8 h
Platte 4.4 h
Clay (this county) 3.8 h
Clinton 3.1 h

Across Missouri

Where it is darkest

Hours / yr64+

All Missouri counties →

About these numbers

Notes

Outages come from the EAGLE-I record of utility outage maps collected every 15 minutes by Oak Ridge National Laboratory. Hours without power are customer-hours divided by the county's 96,031 electricity customers. Averages use well-covered years from 2018. Outages shorter than 15 minutes, and utilities that publish no outage map, are not in the record, so these figures understate the total. How every number is made →