Llano 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 |
|---|---|---|---|
| Feb 14, 2021 | 93 hrs | 16,499 (80%) | Winter Storm Uri |
| Apr 13, 2023 | 1 hrs | 10,462 (51%) | Drought |
| Aug 20, 2022 | 2 hrs | 10,318 (50%) | Drought |
| Oct 5, 2022 | 1 hrs | 7,129 (35%) | Drought |
| Feb 18, 2021 | 30 hrs | 6,999 (34%) | Winter Storm Uri |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Llano County, Texas that day.
Over the 9 years from 2017 to 2025, Llano County recorded 471 distinct power outage events, averaging 2.1 hours per event.
The single worst outage on record in Llano County started February 14, 2021 (Winter Storm Uri), lasting 93 hours and leaving up to 16,499 customers without power (80% of the county) at its peak.
May has historically been the worst month for outages in Llano County, with 61 events recorded during that month across the dataset.
Based on this history, Llano County earns a Reliability Grade of D, placing it in the 39th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Texas
Counties with the closest reliability grade and national percentile to Llano County.
| County | Grade | National percentile |
|---|---|---|
| Delta County | D | 39th |
| Lee County | D | 39th |
| Deaf Smith County | D | 39th |
| Frio County | D | 39th |
| Bell County | D | 39th |
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 Llano County?
Between 2017 and 2025, Llano County recorded 471 outage events, averaging 2.1 hours each.
What is Llano County's reliability grade?
Llano County has a Reliability Grade of D, in the 39th national percentile.
What was the worst power outage in Llano County?
The worst outage on record started February 14, 2021 (Winter Storm Uri), lasting 93 hours and affecting up to 16,499 customers.