Power Out Map
– 0% of Gratiot out 0 customers out in Michigan

Power outage history

Gratiot County Michigan

5.2hours

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

76th most of 83 in Michigan 21% below the national median

Worst outage on record Jun 10, 2020 21% of customers out · 90% back in 2.1 days
Hours without power, average customer per year 5.2h / yr State average 13 h · national median 6.6 h
Major outages a year 0.6 Peaks over 10% of customers or 50,000 customers
Typical time to restore 90% 6hours Median across major outages, from the peak
Longest single outage 2.5days Feb 7, 2019, over 1% of customers out
Outage hours on storm days 15% Share falling on days with a NOAA storm report here
Worst year 2020 9.3 hours without power, average customer
Electricity customers 21,004 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 Gratiot'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

2020 was the worst well-recorded year, at 9.3 hours for the average customer. Hatched years have a thin record and are left out of the averages.

Gratiot, hours without power per customer

GratiotUS median countyMichigan average
0 5 10 15 7.5 ’15 6.7 ’16 4.8 ’17 5.9 ’18 4.9 ’19 9.3 ’20 7.3 ’21 2.9 ’22 4.9 ’23 4.1 ’24 2.4 ’25 MI 13 US 6.6

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 10, 2020 No storm report 4,369 21% 2.4 d 2.1 d 145k
Feb 24, 2016 Winter storm 4,865 23% 28 h 22 h 84k
Dec 24, 2015 No storm report 2,655 13% 38 h 28 h 70k
May 4, 2018 No storm report 1,843 9% 2.1 d 42 h 53k
Dec 11, 2021 No storm report 1,732 8% 39 h 38 h 45k
Jun 17, 2024 Thunderstorms 3,247 15% 21 h 15 h 43k
Mar 9, 2017 No storm report 2,377 11% 21 h 30 h 38k
Feb 27, 2023 No storm report 2,031 10% 38 h 29 h 36k
Feb 7, 2019 No storm report 960 5% 2.5 d – 31k
Sep 7, 2021 Thunderstorms 1,296 6% 27 h 25 h 23k
Mar 10, 2017 No storm report 1,133 5% 48 h 2.1 d 21k
Aug 24, 2021 Thunderstorms 2,431 12% 7.8 h 5.8 h 15k

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.

0% 25% 50% 75% 100% peak+24h+48h+72h+96h half back by +16h 90% by +26h

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 Gratiot from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.

  • No storm on record 85%
  • Thunderstorms 14%
  • Winter storm 0.8%

Who keeps the lights on

Utilities serving Gratiot

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

Utility Type Outage min / yr Excl. major storms Outages / yr Residential ¢/kWh Customers
DTE Electric Company Investor Owned 192 151 1.16 20.3 2.1M
Consumers Energy Co Investor Owned 820 164 1.40 20.7 1.7M
Tri-County Electric Coop (MI) Cooperative 1,153 119 1.82 18.3 23k
City of St Louis MI – – – – 12k

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 Michigan

Where it is darkest

Hours / yr64+

All Michigan 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 21,004 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 →