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

Power outage history

Glasscock County Texas

37hours

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

10th most of 240 in Texas 5.6× 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 37h / yr State average 9.0 h · national median 6.6 h
Major outages a year 24.0 Peaks over 10% of customers or 50,000 customers
Typical time to restore 90% 2hours Median across major outages, from the peak
Longest single outage 6.9days Feb 13, 2021, over 1% of customers out
Outage hours on storm days 46% Share falling on days with a NOAA storm report here
Worst year 2021 4.3 days without power, average customer
Electricity customers 931 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 Glasscock'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 4.3 days for the average customer. Hatched years have a thin record and are left out of the averages.

Glasscock, hours without power per customer

GlasscockUS median countyTexas average
0 20 40 60 80 100 120 25 ’15 ’17 20 ’18 27 ’19 26 ’20 104 ’21 43 ’22 27 ’23 15 ’24 33 ’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 13, 2021 Winter storm 931 100% 6.9 d 3.3 d 68k
Jan 3, 2015 No storm report 475 51% 2.5 d 46 h 18k
May 24, 2022 Thunderstorms 931 100% 37 h 31 h 17k
May 29, 2025 No storm report 301 32% 26 h 17 h 4.1k
Jan 2, 2015 Ice storm 673 72% 6.0 h 5.0 h 3.8k
Mar 2, 2023 No storm report 819 88% 13 h 9.8 h 3.5k
Sep 24, 2025 No storm report 259 28% 27 h 18 h 3.4k
Oct 18, 2025 No storm report 357 38% 27 h 26 h 3.1k
Mar 19, 2025 Windstorm 320 34% 16 h 3.5 h 2.9k
May 2, 2018 No storm report 605 65% 7.0 h 1.0 h 2.6k
Oct 28, 2020 No storm report 199 21% 30 h 26 h 2.3k
Jul 20, 2024 No storm report 165 18% 25 h 22 h 2.2k

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 +4h 90% by +22h

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 Glasscock from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.

  • No storm on record 54%
  • Winter storm 30%
  • Thunderstorms 13%
  • Windstorm 2.5%
  • Flooding 0.7%

Who keeps the lights on

Utilities serving Glasscock

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
Concho Valley Elec Coop Inc Cooperative 364 364 3.73 13.5 12k
Oncor Electric Delivery Company LLC Investor Owned 232 67 1.55 – –

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 931 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 →