Power Out Map
– 0% of Clinton out 0 customers out in Iowa

Power outage history

Clinton County Iowa

13hours

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

6th most of 98 in Iowa 2.0× the national median

Worst outage on record Aug 11, 2020 99% of customers out · 90% back in 5.8 days
Hours without power, average customer per year 13h / yr State average 5.4 h · national median 6.6 h
Major outages a year 2.8 Peaks over 10% of customers or 50,000 customers
Typical time to restore 90% 1hours Median across major outages, from the peak
Longest single outage 9.1days Aug 10, 2020, over 1% of customers out
Outage hours on storm days 93% Share falling on days with a NOAA storm report here
Worst year 2020 3.6 days without power, average customer
Electricity customers 21,505 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 Clinton'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 3.6 days for the average customer. Hatched years have a thin record and are left out of the averages.

Clinton, hours without power per customer

ClintonUS median countyIowa average
0 5 10 15 20 3.7 ’15 2.2 ’16 2.4 ’17 3.6 ’18 4.0 ’19 87 ’20 2.0 ’21 1.9 ’22 3.0 ’23 3.0 ’24 2.0 ’25 US 6.6 IA 5.4

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, 2020 Thunderstorms 21,264 99% 9.1 d 5.8 d 1.8M
Mar 23, 2015 No storm report 1,579 7% 28 h 38 h 42k
Jun 30, 2019 Thunderstorms 6,484 30% 21 h 12 h 33k
Mar 31, 2023 Tornadoes 4,585 21% 17 h 6.0 h 20k
May 21, 2024 Thunderstorms 2,653 12% 16 h 12 h 14k
Mar 6, 2017 Tornadoes 3,585 17% 15 h 4.0 h 13k
Aug 28, 2018 Thunderstorms 2,531 12% 9.0 h 8.0 h 8.2k
May 17, 2017 Thunderstorms 2,279 11% 3.5 h 2.5 h 7.9k
Jun 16, 2022 No storm report 2,368 11% 2.8 h 8.8 h 6.5k
Jul 28, 2023 Thunderstorms 2,015 9% 8.2 h 3.5 h 6.5k
Jan 18, 2020 Winter storm 4,456 21% 2.0 h 1.0 h 5.8k
Feb 22, 2022 No storm report 2,238 10% 3.5 h 3.5 h 5.5k

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 +2h 90% by +4h

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

  • Thunderstorms 91%
  • No storm on record 6.9%
  • Winter storm 1.0%
  • Tornadoes 1.0%

Who keeps the lights on

Utilities serving Clinton

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

Utility Type Outage min / yr Excl. major storms Outages / yr Residential ¢/kWh Customers
MidAmerican Energy Co Investor Owned 205 82 1.19 11.2 640k
Interstate Power and Light Co Investor Owned 89 74 0.82 17.8 419k
Eastern Iowa Light & Power Coop Cooperative 92 79 0.93 14.8 20k
Maquoketa Valley Rrl Elec Coop Cooperative 138 63 1.03 13.8 11k
City of Maquoketa Municipal – – – 13.6 2.8k

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 Iowa

Where it is darkest

Hours / yr64+

All Iowa 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 21,505 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 →