Caldwell County Power Outage History
2015–2025 · 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 |
|---|---|---|---|
| Mar 7, 2017 | 3 hrs | 2,772 (41%) | Thunderstorm Wind |
| Oct 24, 2017 | <1 hr | 2,716 (40%) | Unnamed event |
| May 29, 2019 | 2 hrs | 2,675 (39%) | Unnamed event |
| Jun 10, 2021 | <1 hr | 2,496 (37%) | Unnamed event |
| Nov 20, 2024 | 1 hrs | 2,403 (35%) | Unnamed event |
Over the 11 years from 2015 to 2025, Caldwell County recorded 290 distinct power outage events, averaging 2.6 hours per event.
The single worst outage on record in Caldwell County started March 7, 2017 (Thunderstorm Wind), lasting 3 hours and leaving up to 2,772 customers without power (41% of the county) at its peak.
August has historically been the worst month for outages in Caldwell County, with 53 events recorded during that month across the dataset.
Based on this history, Caldwell County earns a Reliability Grade of A, placing it in the 85th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Caldwell County's outage profile
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Outage-prep kit
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Similar counties in Missouri
Counties with the closest reliability grade and national percentile to Caldwell County.
| County | Grade | National percentile |
|---|---|---|
| Randolph County | A | 86th |
| Wright County | A | 86th |
| Shelby County | A | 86th |
| Phelps County | A | 85th |
| Monroe County | A | 85th |
Most reliable counties in Missouri
The top 3 counties in Missouri by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Mercer County | A | 98th |
| McDonald County | A | 97th |
| Boone County | A | 97th |
Least reliable counties in Missouri
The bottom 3 counties in Missouri by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| St. Louis County | F | 10th |
| Reynolds County | F | 20th |
| Iron County | D | 22nd |
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 Caldwell County?
Between 2015 and 2025, Caldwell County recorded 290 outage events, averaging 2.6 hours each.
What is Caldwell County's reliability grade?
Caldwell County has a Reliability Grade of A, in the 85th national percentile.
What was the worst power outage in Caldwell County?
The worst outage on record started March 7, 2017 (Thunderstorm Wind), lasting 3 hours and affecting up to 2,772 customers.