Power Out Map
– 0% of Mercer out 0 customers out in Missouri

Power outage history

Mercer County Missouri

The outage record here is too thin for a reliable yearly average. Raw events are listed below.

Worst outage on record Jun 29, 2023 3% of customers out · lasted 13 hours
Hours without power, average customer per year –h / yr State average 5.2 h · national median 6.6 h
Major outages a year – Peaks over 10% of customers or 50,000 customers
Typical time to restore 90% – Median across major outages, from the peak
Longest single outage 13hours Jun 29, 2023, over 1% of customers out
Outage hours on storm days 60% Share falling on days with a NOAA storm report here
Worst year –
Electricity customers 1,937 ORNL customer model · 0 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 Mercer'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

Mercer, hours without power per customer

MercerUS median countyMissouri average
0 2 4 6 8 ’15 ’16 ’17 ’18 ’19 ’20 ’21 ’22 ’23 ’24 ’25 US 6.6 MO 5.2

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 29, 2023 Thunderstorms 52 3% 13 h – 483
Jan 10, 2020 Winter storm 59 3% 7.8 h – 413
Jan 8, 2024 Winter storm 60 3% 4.2 h – 244
Aug 18, 2020 No storm report 62 3% 5.2 h – 238
Dec 24, 2021 No storm report 55 3% 3.2 h – 179
May 20, 2018 Thunderstorms 55 3% 3.0 h – 165
Dec 15, 2021 Windstorm 55 3% 3.2 h – 162
May 9, 2022 No storm report 53 3% 2.8 h – 146
May 17, 2015 No storm report 57 3% 2.5 h – 142
Jan 9, 2024 Winter storm 57 3% 2.2 h – 128
Jul 20, 2019 No storm report 57 3% 2.2 h – 126
Aug 24, 2016 No storm report 55 3% 2.0 h – 110

When it happens

The outage clock

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

00061218 Jan inside

What was happening

Weather behind the outages

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

  • No storm on record 40%
  • Winter storm 29%
  • Thunderstorms 24%
  • Windstorm 6.0%

Who keeps the lights on

Utilities serving Mercer

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
Evergy Missouri West Investor Owned 184 104 1.49 12.1 309k
Grundy Electric Coop, Inc MO 54 52 – 12.6 71k

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

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 1,937 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 →