Cooper County Power Outage History
2014–2025 · Missouri
Top 20% most reliable nationally — infrequent, short outages. How grades are calculated
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 hrs | 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 |
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).
Sized for Cooper County's outage profile
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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 |
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.