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

Power outage history

Knox County Texas

12hours

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

102nd most of 240 in Texas 1.8× the national median

Worst outage on record Oct 28, 2020 88% of customers out · 90% back in 7.8 hours
Hours without power, average customer per year 12h / yr State average 9.0 h · national median 6.6 h
Major outages a year 7.1 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 3.7days Oct 27, 2020, over 1% of customers out
Outage hours on storm days 70% Share falling on days with a NOAA storm report here
Worst year 2020 25 hours without power, average customer
Electricity customers 2,779 EAGLE-I 2024 count · 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 Knox'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

2020 was the worst well-recorded year, at 25 hours for the average customer. Hatched years have a thin record and are left out of the averages.

Knox, hours without power per customer

KnoxUS median countyTexas average
0 10 20 30 ’15 ’17 4.5 ’18 2.8 ’19 25 ’20 20 ’21 3.9 ’22 8.0 ’23 7.5 ’24 23 ’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
Oct 27, 2020 Ice storm 2,452 88% 3.7 d 7.8 h 52k
Feb 16, 2021 Winter storm 1,358 49% 28 h 26 h 32k
Apr 29, 2025 Thunderstorms 1,324 48% 30 h 28 h 22k
Jun 8, 2025 Thunderstorms 2,566 92% 24 h 20 h 16k
Apr 27, 2024 Thunderstorms 794 29% 48 h 32 h 10k
Jun 23, 2023 Thunderstorms 1,151 41% 18 h 12 h 6.2k
Jun 7, 2018 Thunderstorms 639 23% 20 h 7.2 h 5.4k
Feb 15, 2021 Winter storm 199 7% 27 h 5.2 h 5.2k
Jun 23, 2020 No storm report 495 18% 11 h 9.2 h 4.4k
Oct 26, 2020 Ice storm 944 34% 8.2 h 4.5 h 3.6k
Mar 17, 2021 No storm report 628 23% 4.8 h 15 h 3.0k
Feb 2, 2022 No storm report 1,826 66% 1.8 h 1.2 h 2.9k

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 +26h

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

  • No storm on record 30%
  • Thunderstorms 28%
  • Ice storm 24%
  • Winter storm 17%
  • Windstorm 0.8%

Who keeps the lights on

Utilities serving Knox

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
Tri-County Electric Coop, Inc (TX) Cooperative 203 132 1.67 15.1 118k
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 2,779 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 →