Power Out Map
– 0% of Llano out 0 customers out in Texas

Power outage history

Llano County Texas

13hours

without power for the average customer in a typical year, 2018–2025

92nd most of 240 in Texas 2.0× the national median

Worst outage on record Feb 15, 2021 100% of customers out · 90% back in 3.3 days
Hours without power, average customer per year 13h / yr State average 9.0 h · national median 6.6 h
Major outages a year 4.1 Peaks over 10% of customers or 50,000 customers
Typical time to restore 90% 1hours Median across major outages, from the peak
Longest single outage 10.0days Feb 11, 2021, over 1% of customers out
Outage hours on storm days 85% Share falling on days with a NOAA storm report here
Worst year 2021 3.4 days without power, average customer
Electricity customers 9,838 ORNL customer model · 8 well-covered years

Every day since 2015

Eleven years, one night at a time

Each cell is a day. The brighter it is, the larger the share of Llano's customers who were without power at that day's worst moment.

20152016201720182019202020212022202320242025
0%100% of customers out

Year by year

Hours in the dark, per customer

2021 was the worst well-recorded year, at 3.4 days for the average customer. Hatched years have a thin record and are left out of the averages.

Llano, hours without power per customer

LlanoUS median countyTexas average
0 5 10 15 20 25 0.2 ’17 0.1 ’18 0.2 ’19 2.4 ’20 82 ’21 5.6 ’22 5.1 ’23 3.2 ’24 5.3 ’25 TX 9.0 US 6.6

The record

The biggest outages since 2015

Ranked by customer-hours lost: customers out multiplied by how long they stayed out. Times are local.

Began Storm Peak out Share Lasted 90% restored Customer-hours
Feb 11, 2021 Winter storm 9,838 100% 10.0 d 3.3 d 748k
May 28, 2025 Thunderstorms 2,879 29% 7.2 h 6.5 h 9.4k
Aug 19, 2022 No storm report 9,838 100% 1.5 h 1.2 h 9.0k
Nov 9, 2021 No storm report 1,739 18% 3.8 h 1.5 h 6.5k
Oct 5, 2022 No storm report 7,129 72% 1.0 h 48 min 5.3k
Apr 13, 2023 No storm report 9,838 100% 1.0 h 1.0 h 5.3k
May 5, 2023 Thunderstorms 2,950 30% 11 h 3.8 h 4.9k
Jun 2, 2021 Thunderstorms 2,020 21% 5.5 h 4.2 h 4.6k
Mar 6, 2022 No storm report 3,163 32% 1.5 h 1.0 h 4.5k
Jan 20, 2025 Winter storm 559 6% 9.0 h 1.2 h 4.3k
Apr 28, 2024 No storm report 3,568 36% 2.2 h 1.2 h 4.3k
Jun 21, 2023 Heat 1,387 14% 9.2 h 4.5 h 3.5k

After the peak

How fast the lights come back

Each line is one major outage, from its peak. The amber line is the typical path.

0% 25% 50% 75% 100% peak+24h+48h+72h+96h half back by +2h 90% by +2h

When it happens

The outage clock

Customer-hours out by month (rings, January innermost) and local hour, 2018–2025.

00061218 Jan inside

What was happening

Weather behind the outages

Each outage is matched to NOAA storm reports for Llano from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.

  • Winter storm 81%
  • No storm on record 15%
  • Thunderstorms 3.0%
  • Heat 0.8%

Who keeps the lights on

Utilities serving Llano

As each utility reports to the Energy Information Administration for its whole Texas territory, not this county alone. Outage minutes include major storm days.

Utility Type Outage min / yr Excl. major storms Outages / yr Residential ¢/kWh Customers
Pedernales Electric Coop, Inc Cooperative 90 78 1.16 12.8 421k
Central Texas Elec Coop, Inc Cooperative 220 193 1.97 12.2 40k
City of Llano TX – – – – 20k
Hamilton County Elec Coop Assn Cooperative – – – 12.6 20k

EIA Form 861, latest year each utility reported. Outage minutes are SAIDI, the yearly minutes the average customer goes without power; outages a year are SAIFI.

Next door

Neighbouring counties

Across Texas

Where it is darkest

Hours / yr64+

All Texas counties →

About these numbers

Notes

Outages come from the EAGLE-I record of utility outage maps collected every 15 minutes by Oak Ridge National Laboratory. Hours without power are customer-hours divided by the county's 9,838 electricity customers. Averages use well-covered years from 2018. Outages shorter than 15 minutes, and utilities that publish no outage map, are not in the record, so these figures understate the total. How every number is made →