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

Power outage history

Lake County Michigan

22hours

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

22nd most of 83 in Michigan 3.3× the national median

Worst outage on record Aug 11, 2021 70% of customers out · 90% back in 2.3 days
Hours without power, average customer per year 22h / yr State average 13 h · national median 6.6 h
Major outages a year 5.8 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 3.8days Aug 28, 2018, over 1% of customers out
Outage hours on storm days 46% Share falling on days with a NOAA storm report here
Worst year 2021 2.3 days without power, average customer
Electricity customers 9,226 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 Lake'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 2.3 days for the average customer. Hatched years have a thin record and are left out of the averages.

Lake, hours without power per customer

LakeUS median countyMichigan average
0 20 40 60 80 17 ’15 3.6 ’16 4.3 ’17 21 ’18 24 ’19 11 ’20 55 ’21 11 ’22 8.0 ’23 19 ’24 23 ’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
Aug 10, 2021 No storm report 6,444 70% 3.0 d 2.3 d 186k
Sep 7, 2021 Thunderstorms 6,282 68% 3.3 d 2.3 d 154k
Aug 28, 2018 Tornadoes 2,553 28% 3.8 d 3.4 d 146k
Aug 27, 2024 Thunderstorms 6,076 66% 2.9 d 31 h 108k
Dec 1, 2019 Winter storm 3,979 43% 2.7 d 32 h 103k
Dec 24, 2015 No storm report 5,604 61% 2.7 d 35 h 100k
Dec 15, 2021 No storm report 3,382 37% 2.6 d 32 h 90k
Mar 15, 2025 No storm report 6,361 69% 31 h 21 h 57k
Jul 20, 2019 Thunderstorms 2,464 27% 45 h 5.8 h 51k
Nov 5, 2022 No storm report 2,353 26% 29 h 16 h 47k
Dec 28, 2025 Winter storm 1,993 22% 2.1 d 26 h 39k
Jun 10, 2020 Tropical Storm Cristobal 2,558 28% 21 h 11 h 20k

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 +10h 90% by +36h

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

  • No storm on record 54%
  • Thunderstorms 24%
  • Winter storm 11%
  • Tornadoes 10.0%
  • Tropical storm 1.5%

Who keeps the lights on

Utilities serving Lake

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
Consumers Energy Co Investor Owned 820 164 1.40 20.7 1.7M
Great Lakes Energy Coop Cooperative 4,401 315 4.09 20.3 123k
Wolverine Power Supply Coop Cooperative – – – – –

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 9,226 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 →