Harris 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 11, 2017 | 90 hrs | 9,423 (54%) | Tropical Storm Irma |
| Mar 3, 2019 | 51 hrs | 9,271 (53%) | Tornado |
| Feb 16, 2025 | 42 hrs | 7,824 (45%) | Unnamed event |
| Feb 12, 2019 | 16 hrs | 4,993 (29%) | Unnamed event |
| Dec 11, 2024 | 8 hrs | 4,169 (24%) | Unnamed event |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Harris County, Georgia that day.
Over the 12 years from 2014 to 2025, Harris County recorded 816 distinct power outage events, averaging 2.7 hours per event.
The single worst outage on record in Harris County started September 11, 2017 (Tropical Storm Irma), lasting 90 hours and leaving up to 9,423 customers without power (54% of the county) at its peak.
July has historically been the worst month for outages in Harris County, with 105 events recorded during that month across the dataset.
Based on this history, Harris County earns a Reliability Grade of D, placing it in the 33rd percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Georgia
Counties with the closest reliability grade and national percentile to Harris County.
| County | Grade | National percentile |
|---|---|---|
| Tattnall County | D | 32nd |
| Stephens County | D | 32nd |
| Heard County | D | 32nd |
| Chattooga County | D | 33rd |
| Seminole County | D | 33rd |
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 Harris County?
Between 2014 and 2025, Harris County recorded 816 outage events, averaging 2.7 hours each.
What is Harris County's reliability grade?
Harris County has a Reliability Grade of D, in the 33rd national percentile.
What was the worst power outage in Harris County?
The worst outage on record started September 11, 2017 (Tropical Storm Irma), lasting 90 hours and affecting up to 9,423 customers.