Cooper CountyPower Outage History
What this grade means
Top 20% most reliable nationally — infrequent, short outages. This county ranks in the most reliable fifth of all US counties in our dataset, based on 12 years of real DOE outage records: outages happen less often here, and when they do occur they tend to be resolved quickly compared to the rest of the country. Baseline outage risk is low, though a severe local storm can still occasionally cause a longer-than-usual outage regardless of the long-term track record.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Jun 16, 2018 | 6 hrs | 2,929 (19%) | Drought |
| Jul 6, 2015 | <1 hr | 2,766 (18%) | Unnamed event |
| Jan 5, 2025 | 11 hrs | 1,551 (10%) | Winter Storm |
| Feb 7, 2019 | 1 hrs | 1,429 (9%) | Ice Storm |
| Jun 12, 2019 | 1 hrs | 1,425 (9%) | Flood |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Cooper County, Missouri that day.
Over the 12 years from 2014 to 2025, Cooper County recorded 513 distinct power outage events, averaging 2.1 hours per event.
The single worst outage on record in Cooper County started June 16, 2018 (Drought), lasting 6 hours and leaving up to 2,929 customers without power (19% of the county) at its peak.
August has historically been the worst month for outages in Cooper County, with 120 events recorded during that month across the dataset.
Based on this history, Cooper County earns a Reliability Grade of A, placing it in the 80th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Missouri
Counties with the closest reliability grade and national percentile to Cooper County.
| County | Grade | National percentile |
|---|---|---|
| Howell County | A | 80th |
| Ste. Genevieve County | B | 80th |
| Montgomery County | A | 81st |
| Taney County | A | 82nd |
| Ralls County | B | 78th |
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 Cooper County?
Between 2014 and 2025, Cooper County recorded 513 outage events, averaging 2.1 hours each.
What is Cooper County's reliability grade?
Cooper County has a Reliability Grade of A, in the 80th national percentile.
What was the worst power outage in Cooper County?
The worst outage on record started June 16, 2018 (Drought), lasting 6 hours and affecting up to 2,929 customers.