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

Power outage history

Floyd County Iowa

3.5hours

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

53rd most of 98 in Iowa 47% below the national median

Worst outage on record Dec 15, 2021 27% of customers out · 90% back in 38 hours
Hours without power, average customer per year 3.5h / yr State average 5.4 h · national median 6.6 h
Major outages a year 4.4 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 2.4days Dec 15, 2021, over 1% of customers out
Outage hours on storm days 62% Share falling on days with a NOAA storm report here
Worst year 2021 7.4 hours without power, average customer
Electricity customers 7,886 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 Floyd'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 7.4 hours for the average customer. Hatched years have a thin record and are left out of the averages.

Floyd, hours without power per customer

FloydUS median countyIowa average
0 2 4 6 8 10 0.8 ’15 1.4 ’16 4.7 ’17 4.0 ’18 2.8 ’19 1.7 ’20 7.4 ’21 2.9 ’22 1.9 ’23 3.9 ’24 3.5 ’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
Dec 15, 2021 Thunderstorms 2,161 27% 2.4 d 38 h 46k
May 17, 2017 Thunderstorms 2,413 31% 28 h 10 h 15k
May 21, 2024 Thunderstorms 2,451 31% 23 h 19 h 12k
Jun 9, 2018 Thunderstorms 3,993 51% 7.8 h 2.5 h 11k
Jul 28, 2025 Thunderstorms 574 7% 17 h 15 h 5.6k
Jul 19, 2017 Thunderstorms 1,687 21% 8.2 h 7.2 h 5.4k
Mar 24, 2018 Winter storm 1,023 13% 11 h 1.8 h 5.3k
May 30, 2022 Thunderstorms 1,032 13% 6.8 h 5.0 h 4.6k
Aug 29, 2024 Thunderstorms 1,553 20% 5.2 h 3.0 h 4.1k
Sep 19, 2019 No storm report 2,394 30% 4.2 h 1.5 h 3.4k
Jul 30, 2022 No storm report 907 12% 3.5 h 3.2 h 2.8k
Apr 11, 2019 No storm report 1,052 13% 3.5 h 2.5 h 2.8k

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

  • Thunderstorms 57%
  • No storm on record 38%
  • Winter storm 4.0%

Who keeps the lights on

Utilities serving Floyd

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
Franklin Rural Electric Coop IA 178 178 1.48 12.7 31k
Heartland Power Coop Cooperative 117 67 0.92 12.8 4.4k
Butler County Rural Elec Coop Cooperative 97 85 1.45 14.5 3.9k
City of Rockford IA – – – – 2.9k

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 7,886 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 →