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

Power outage history

Sterling County Texas

24hours

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

26th most of 240 in Texas 3.7× the national median

Worst outage on record Feb 15, 2021 81% of customers out · 90% back in 9.5 hours
Hours without power, average customer per year 24h / yr State average 9.0 h · national median 6.6 h
Major outages a year 15.1 Peaks over 10% of customers or 50,000 customers
Typical time to restore 90% 3hours Median across major outages, from the peak
Longest single outage 37hours Feb 15, 2021, over 1% of customers out
Outage hours on storm days 32% Share falling on days with a NOAA storm report here
Worst year 2021 2.6 days without power, average customer
Electricity customers 1,197 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 Sterling'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 2.6 days for the average customer. Hatched years have a thin record and are left out of the averages.

Sterling, hours without power per customer

SterlingUS median countyTexas average
0 20 40 60 80 ’15 ’17 1.9 ’18 13 ’19 25 ’20 63 ’21 22 ’22 25 ’23 15 ’24 28 ’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 15, 2021 Winter storm 967 81% 37 h 9.5 h 33k
Sep 30, 2019 No storm report 841 70% 6.0 h 6.0 h 5.0k
Jan 10, 2021 Winter storm 852 71% 15 h 1.8 h 5.0k
Feb 14, 2021 Winter storm 500 42% 20 h 7.5 h 4.4k
Oct 27, 2021 No storm report 348 29% 23 h 21 h 3.1k
May 12, 2023 No storm report 810 68% 11 h 2.2 h 2.8k
Jan 29, 2025 No storm report 336 28% 8.0 h 8.0 h 2.7k
Oct 7, 2024 No storm report 328 27% 7.2 h 7.2 h 2.4k
Mar 20, 2022 No storm report 317 26% 7.5 h 15 h 2.3k
Apr 4, 2025 No storm report 197 16% 17 h 23 h 2.3k
Oct 6, 2021 No storm report 870 73% 2.5 h 3.2 h 2.1k
Mar 4, 2025 No storm report 699 58% 5.0 h 2.2 h 2.1k

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 +6h 90% by +8h

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

  • No storm on record 69%
  • Winter storm 27%
  • Thunderstorms 4.4%

Who keeps the lights on

Utilities serving Sterling

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 – –
AEP Texas North Company Investor Owned 133 106 1.41 – –

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 1,197 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 →