Greene CountyPower Outage History
2014–2025 · Iowa
Worse than average — more frequent or longer outages than most counties.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| May 2, 2018 | 2 hrs | 3,689 (95%) | Unnamed event |
| Aug 10, 2020 | 214 hrs | 3,392 (87%) | Drought |
| Dec 15, 2021 | 72 hrs | 3,361 (87%) | Tornado |
| May 1, 2022 | 2 hrs | 3,339 (86%) | Unnamed event |
| Feb 24, 2017 | 14 hrs | 2,768 (71%) | Blizzard |
Over the 12 years from 2014 to 2025, Greene County recorded 382 distinct power outage events, averaging 2.9 hours per event.
The single worst outage on record in Greene County started May 2, 2018, lasting 2 hours and leaving up to 3,689 customers without power (95% of the county) at its peak.
June has historically been the worst month for outages in Greene County, with 55 events recorded during that month across the dataset.
Based on this history, Greene County earns a Reliability Grade of D, placing it in the 20th percentile nationally for grid reliability (higher percentile = more reliable).
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Similar counties in Iowa
Counties with the closest reliability grade and national percentile to Greene County.
| County | Grade | National percentile |
|---|---|---|
| Monroe County | D | 21st |
| Cedar County | D | 22nd |
| Clinton County | D | 23rd |
| Benton County | F | 18th |
| Linn County | F | 16th |
Most reliable counties in Iowa
The top 3 counties in Iowa by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Clay County | A | 97th |
| Emmet County | A | 95th |
| Bremer County | A | 94th |
Least reliable counties in Iowa
The bottom 3 counties in Iowa by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Marshall County | F | 6th |
| Tama County | F | 12th |
| Jasper County | F | 14th |
Most reliable counties nationally
The top 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | South Dakota | A | 100th |
| Clearwater County | Minnesota | A | 99th |
| Limestone County | Alabama | A | 99th |
Least reliable counties nationally
The bottom 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | West Virginia | F | 0th |
| Lincoln County | West Virginia | F | 0th |
| Cameron Parish | Louisiana | F | 0th |
FAQ
How often does power go out in Greene County?
Between 2014 and 2025, Greene County recorded 382 outage events, averaging 2.9 hours each.
What is Greene County's reliability grade?
Greene County has a Reliability Grade of D, in the 20th national percentile.
What was the worst power outage in Greene County?
The worst outage on record started May 2, 2018, lasting 2 hours and affecting up to 3,689 customers.