Putnam CountyPower Outage History
2019–2025 · Missouri
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 |
|---|---|---|---|
| Jul 20, 2025 | 3 hrs | 291 (11%) | Unnamed event |
| Sep 20, 2025 | 2 hrs | 282 (11%) | Unnamed event |
| Jul 3, 2024 | 1 hrs | 267 (10%) | Thunderstorm Wind |
| Jul 28, 2023 | 1 hrs | 218 (8%) | Drought |
| Aug 14, 2025 | <1 hr | 146 (5%) | Unnamed event |
Over the 7 years from 2019 to 2025, Putnam County recorded 128 distinct power outage events, averaging 1.8 hours per event.
The single worst outage on record in Putnam County started July 20, 2025, lasting 3 hours and leaving up to 291 customers without power (11% of the county) at its peak.
July has historically been the worst month for outages in Putnam County, with 23 events recorded during that month across the dataset.
Based on this history, Putnam County earns a Reliability Grade of A, placing it in the 96th percentile nationally for grid reliability (higher percentile = more reliable).
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Read our mission →Similar counties in Missouri
Counties with the closest reliability grade and national percentile to Putnam County.
| County | Grade | National percentile |
|---|---|---|
| Callaway County | A | 95th |
| Livingston County | A | 95th |
| Marion County | A | 96th |
| Pulaski County | A | 95th |
| Laclede County | A | 95th |
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 Putnam County?
Between 2019 and 2025, Putnam County recorded 128 outage events, averaging 1.8 hours each.
What is Putnam County's reliability grade?
Putnam County has a Reliability Grade of A, in the 96th national percentile.
What was the worst power outage in Putnam County?
The worst outage on record started July 20, 2025, lasting 3 hours and affecting up to 291 customers.