Marion 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 |
|---|---|---|---|
| Apr 9, 2021 | <1 hr | 12,097 (30%) | Thunderstorm Wind |
| Apr 15, 2021 | 1 hrs | 12,074 (30%) | Thunderstorm Wind |
| Feb 21, 2022 | 1 hrs | 8,205 (20%) | Unnamed event |
| Jun 19, 2025 | 44 hrs | 5,272 (13%) | Thunderstorm Wind |
| Jun 14, 2022 | 43 hrs | 5,141 (13%) | Thunderstorm Wind |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Marion County, Ohio that day.
Over the 12 years from 2014 to 2025, Marion County recorded 282 distinct power outage events, averaging 2.6 hours per event.
The single worst outage on record in Marion County started April 9, 2021 (Thunderstorm Wind), lasting less than 1 hour and leaving up to 12,097 customers without power (30% of the county) at its peak.
June has historically been the worst month for outages in Marion County, with 33 events recorded during that month across the dataset.
Based on this history, Marion County earns a Reliability Grade of A, placing it in the 84th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Ohio
Counties with the closest reliability grade and national percentile to Marion County.
| County | Grade | National percentile |
|---|---|---|
| Williams County | A | 87th |
| Sandusky County | A | 81st |
| Union County | A | 87th |
| Seneca County | A | 87th |
| Clark County | B | 80th |
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 Marion County?
Between 2014 and 2025, Marion County recorded 282 outage events, averaging 2.6 hours each.
What is Marion County's reliability grade?
Marion County has a Reliability Grade of A, in the 84th national percentile.
What was the worst power outage in Marion County?
The worst outage on record started April 9, 2021 (Thunderstorm Wind), lasting less than 1 hour and affecting up to 12,097 customers.