Power Out Map
– 0% of Uinta out 0 customers out in Wyoming

Power outage history

Uinta County Wyoming

0.9hours

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

19th most of 20 in Wyoming 86% below the national median

Worst outage on record Dec 16, 2017 56% of customers out · 90% back in 1.5 hours
Hours without power, average customer per year 0.9h / yr State average 2.4 h · national median 6.6 h
Major outages a year 0.6 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 10hours Sep 8, 2020, over 1% of customers out
Outage hours on storm days 26% Share falling on days with a NOAA storm report here
Worst year 2022 1.6 hours without power, average customer
Electricity customers 12,368 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 Uinta'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

2022 was the worst well-recorded year, at 1.6 hours for the average customer. Hatched years have a thin record and are left out of the averages.

Uinta, hours without power per customer

UintaUS median countyWyoming average
0 2 4 6 8 1.7 ’17 0.8 ’18 0.8 ’19 1.2 ’20 1.3 ’21 1.6 ’22 0.9 ’23 0.4 ’24 0.6 ’25 US 6.6 WY 2.4

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
Dec 16, 2017 No storm report 6,934 56% 2.8 h 1.5 h 18k
Sep 8, 2020 Winter storm 1,349 11% 10 h 6.2 h 8.5k
Aug 21, 2021 Thunderstorms 1,278 10% 6.2 h 1.8 h 6.1k
May 25, 2022 No storm report 1,469 12% 5.5 h 3.2 h 5.8k
Feb 16, 2019 No storm report 315 3% 9.8 h – 2.8k
Jul 16, 2023 No storm report 453 4% 9.5 h – 2.6k
Jul 2, 2025 No storm report 400 3% 5.5 h – 2.2k
Nov 7, 2023 No storm report 307 2% 7.0 h – 2.1k
Oct 2, 2022 No storm report 263 2% 8.5 h – 1.8k
Nov 18, 2017 No storm report 355 3% 4.5 h – 1.6k
Feb 22, 2023 No storm report 308 2% 5.0 h – 1.5k
Nov 9, 2021 No storm report 1,204 10% 2.5 h 12 min 1.5k

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

  • No storm on record 74%
  • Winter storm 16%
  • Thunderstorms 10%

Who keeps the lights on

Utilities serving Uinta

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

Utility Type Outage min / yr Excl. major storms Outages / yr Residential ¢/kWh Customers
PacifiCorp Investor Owned 195 91 1.37 15.1 119k
Bridger Valley Elec Assn, Inc WY – – – 11.1 40k

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 Wyoming

Where it is darkest

Hours / yr64+

All Wyoming 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 12,368 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 →