Putnam CountyPower Outage History
What this grade means
Better than average — fewer or shorter outages than most counties. This county's outage history is better than the national median: recorded outages are less frequent and/or shorter in duration than a typical US county experienced over the same 12-year period. It isn't in the top tier nationally, but its track record points to lower-than-average outage risk.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Sep 4, 2018 | <1 hr | 2,987 (19%) | Unnamed event |
| Apr 2, 2025 | 6 hrs | 2,676 (17%) | Flood |
| Jul 27, 2019 | 2 hrs | 2,297 (15%) | Unnamed event |
| Jun 14, 2022 | 57 hrs | 1,669 (11%) | Thunderstorm Wind |
| May 23, 2019 | 6 hrs | 1,438 (9%) | Thunderstorm Wind |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Putnam County, Ohio that day.
Over the 12 years from 2014 to 2025, Putnam County recorded 355 distinct power outage events, averaging 2.7 hours per event.
The single worst outage on record in Putnam County started September 4, 2018, lasting less than 1 hour and leaving up to 2,987 customers without power (19% of the county) at its peak.
April has historically been the worst month for outages in Putnam County, with 46 events recorded during that month across the dataset.
Based on this history, Putnam County earns a Reliability Grade of B, placing it in the 79th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Ohio
Counties with the closest reliability grade and national percentile to Putnam County.
| County | Grade | National percentile |
|---|---|---|
| Clark County | B | 80th |
| Crawford County | B | 77th |
| Sandusky County | A | 81st |
| Mercer County | B | 76th |
| Wyandot County | B | 76th |
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 2014 and 2025, Putnam County recorded 355 outage events, averaging 2.7 hours each.
What is Putnam County's reliability grade?
Putnam County has a Reliability Grade of B, in the 79th national percentile.
What was the worst power outage in Putnam County?
The worst outage on record started September 4, 2018, lasting less than 1 hour and affecting up to 2,987 customers.