Porter CountyPower Outage History
What this grade means
Worse than average — more frequent or longer outages than most counties. This county's recorded history shows more frequent outages and/or longer restoration times than most US counties over the same 12-year period. If you live here, it's worth taking backup power more seriously than an average household would.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Sep 22, 2024 | <1 hr | 66,462 (79%) | Unnamed event |
| Sep 29, 2024 | <1 hr | 66,462 (79%) | Unnamed event |
| Sep 29, 2024 | <1 hr | 66,462 (79%) | Unnamed event |
| Sep 29, 2024 | <1 hr | 66,462 (79%) | Unnamed event |
| Sep 1, 2024 | 4 hrs | 30,133 (36%) | Unnamed event |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Porter County, Indiana that day.
Over the 11 years from 2015 to 2025, Porter County recorded 1,006 distinct power outage events, averaging 3.3 hours per event.
The single worst outage on record in Porter County started September 22, 2024, lasting less than 1 hour and leaving up to 66,462 customers without power (79% of the county) at its peak.
August has historically been the worst month for outages in Porter County, with 148 events recorded during that month across the dataset.
Based on this history, Porter County earns a Reliability Grade of D, placing it in the 33rd percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Indiana
Counties with the closest reliability grade and national percentile to Porter County.
| County | Grade | National percentile |
|---|---|---|
| Clay County | D | 33rd |
| Vermillion County | D | 34th |
| Pike County | D | 32nd |
| Monroe County | D | 30th |
| LaPorte County | D | 30th |
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 Porter County?
Between 2015 and 2025, Porter County recorded 1,006 outage events, averaging 3.3 hours each.
What is Porter County's reliability grade?
Porter County has a Reliability Grade of D, in the 33rd national percentile.
What was the worst power outage in Porter County?
The worst outage on record started September 22, 2024, lasting less than 1 hour and affecting up to 66,462 customers.