Power outages in Johnson County, IA
Live outage counts for Iowa City, Coralville and North Liberty and the rest of Johnson County, updated every 10 minutes from MidAmerican Energy.
Right now
No live outage data for Johnson County yet.
Interstate Power and Light Cono live feedServes this county, per federal utility records.
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This utility doesn't publish outage data we can read automatically, so it isn't in our totals. Its own outage map has its current outages.i
From EIA Form 861, the U.S. Energy Information Administration's yearly survey of every electric utility and the areas it serves.Corridor Energy Cooperativeno live feedServes this county, per federal utility records.
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This utility doesn't publish outage data we can read automatically, so it isn't in our totals. Its own outage map has its current outages.i
From EIA Form 861, the U.S. Energy Information Administration's yearly survey of every electric utility and the areas it serves.Eastern Iowa Light & Power Coopno live feedServes this county, per federal utility records.
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This utility doesn't publish outage data we can read automatically, so it isn't in our totals. Its own outage map has its current outages.i
From EIA Form 861, the U.S. Energy Information Administration's yearly survey of every electric utility and the areas it serves.East-Central Iowa Rural Elec Coopno live feedServes this county, per federal utility records.
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This utility doesn't publish outage data we can read automatically, so it isn't in our totals. Its own outage map has its current outages.i
From EIA Form 861, the U.S. Energy Information Administration's yearly survey of every electric utility and the areas it serves.Farmers Electric Coop - (IA)no live feedServes this county, per federal utility records.
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This utility doesn't publish outage data we can read automatically, so it isn't in our totals. Its own outage map has its current outages.i
From EIA Form 861, the U.S. Energy Information Administration's yearly survey of every electric utility and the areas it serves.Outage map
County outlineMidAmerican Energy publishes totals only, not outage locations.
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Some utilities publish only how many customers are out, not where. Their outages are in the counts but can't be drawn on the map.Outage history in Johnson County
2014–2025 recordJohnson County averaged 25 significant outages a year in 2023–2025, more than most Iowa counties.
In the 12 months to December 2025, there were 21. Half were over within 1.5 hours; the longest lasted 8 hours, starting August 15, 2025.
The largest on record began August 10, 2020, with 51,777 customers out at once.
25significant outages a year (2023–2025)
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At least 1% of the area's customers, and at least 100, without power at the same time. Outages less than 6 hours apart count as one.1.5 hourstypical (median) length
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Half of significant outages here ended sooner than this, and half lasted longer.6.1 dayslongest on record (August 2020)
51,777most customers out at once
| Largest events (start) | Peak out | LastediHow long this area stayed at or above the significant-outage line, not how long any one home was without power. | Customer-hoursiCustomers out multiplied by hours out, added up over the event. 1,000 customers out for 3 hours is 3,000 customer-hours. |
|---|---|---|---|
| August 10, 2020 | 51,777 | 6.1 days | 2,255,365 |
| November 5, 2018 | 12,865 | 30 minutes | 5,506 |
| June 9, 2018 | 10,998 | 2 hours | 7,776 |
| December 1, 2025 | 8,629 | 5 hours | 20,547 |
| August 28, 2018 | 8,625 | 9.5 hours | 9,389 |
Recorded outages from EAGLE-I, Oak Ridge National Laboratory (CC BY 4.0).i
From EAGLE-I, Oak Ridge National Laboratory's record of utility outage data every 15 minutes since 2014 (CC BY 4.0). It covered about 9 in 10 U.S. customers.
If your power is out
Report it to your utility
- MidAmerican Energy: outage map and reporting
- Stay at least 35 feet from downed power lines and report them right away.
Food safety
- 0–4 hKeep the fridge closed. It keeps food cold for about 4 hours.
- 4 h+Throw out meat, dairy and leftovers that have been above 40°F for more than 2 hours.
- 24 hA half-full freezer holds about 24 hours if kept closed.
- 48 hA full freezer holds about 48 hours.
Generators, heat and cold
- Run generators outside only, at least 20 feet from windows and doors. Never in a garage.
- Use a battery-powered carbon monoxide alarm.
- Never heat your home with a gas stove or oven.
Cities in Johnson County
Utilities
- MidAmerican Energy
- Interstate Power and Light Co no live feed
- Corridor Energy Cooperative no live feed
- Eastern Iowa Light & Power Coop no live feed
- East-Central Iowa Rural Elec Coop no live feed
- Farmers Electric Coop - (IA) no live feed
- All Iowa outages