massoutage

2025 Wyoming Power Outage Report

In 2025, the average Wyoming customer went without power for about 3.7 hours, the 35th worst of 51 states (US average 5.3 hours). Figures from DOE/ORNL EAGLE-I, including major storm days.

Avg hrs / customer
3.7
vs prior year
▲ 54%
vs 2024
Customer-hours out
1.2M
Peak customers out
89,889
across the state at once
EAGLE-I coverage
n/a
of WY customers
Counties reporting
21

Wyoming year over year

Wyoming: average hours without power per customer by year2015: 0.4h; 2016: 0.6h; 2017: 0.9h; 2018: 1.2h, coverage 62%; 2019: 1.3h, coverage 68%; 2020: 3.4h, coverage 71%; 2021: 2.2h, coverage 71%; 2022: 2.4h, coverage 71%; 2023: 2.0h; 2024: 2.4h; 2025: 3.7h012340%50%100%0.4h20150.6h20160.9h20171.2h20181.3h20193.4h20202.2h20212.4h20222.0h20232.4h20243.7h2025
Use the arrow keys to read values.
Average hours without power per customer. Line: EAGLE-I coverage, share of customers tracked (right axis).

Month by month, 2025

Customer-hours without power across Wyoming; November was the worst.

CSVJSON
Wyoming customer-hours without power by month, 2025Jan 32K, Feb 18K, Mar 38K, Apr 52K, May 41K, Jun 83K, Jul 96K, Aug 243K, Sep 104K, Oct 41K, Nov 333K, Dec 126K0100k200k300k400k32KJan18KFeb38KMar52KApr41KMay83KJun96KJul243KAug104KSep41KOct333KNov126KDec
Use the arrow keys to read values.

All 21 Wyoming counties, 2025

Ranked by average hours without power per customer. Each county links to its annual report.

CSVJSON
#CountyHrs / customerCustomer-hoursCustomersPeak outEvents
1Crook County31.6144K4,5454,545388
2Converse County12.394K7,6247,6241,280
3Weston County10.742K3,9333,933253
4Carbon County10.1109K10,7675,551238
5Johnson County9.451K5,4485,448317
6Campbell County5.5153K28,06012,319271
7Sublette County5.327K5,123572189
8Sheridan County4.580K17,61812,017243
9Big Horn County4.216K3,9301,675115
10Natrona County3.8181K47,99243,178628
11Hot Springs County3.47,8532,3101,00174
12Park County2.636K14,0052,206212
13Lincoln County2.431K12,8203,373298
14Albany County2.251K23,3032,734253
15Teton County1.834K18,5921,534196
16Sweetwater County1.436K25,4756,041438
17Laramie County1.263K52,9874,879606
18Fremont County1.026K26,8235,383285
19Uinta County0.67,42812,368411188
20Platte County-5,240-45919
21Washakie County-14K-2,607102

Biggest Wyoming outages of 2025

Up to 25 county outage episodes with the most customers out at once.

CSVJSON
#CountyStarted (UTC)Ended (UTC)DurationPeak outCustomer-hours
1Natrona County, WYNovember 13, 2025 16:15November 14, 2025 11:1519h43,17888K
2Campbell County, WYNovember 13, 2025 18:30November 14, 2025 07:4513h 15m12,31950K
3Sheridan County, WYNovember 13, 2025 16:15November 18, 2025 21:305d 5h12,01749K
4Converse County, WYNovember 13, 2025 20:00November 14, 2025 14:4518h 45m7,62429K
5Natrona County, WYJuly 28, 2025 14:30July 28, 2025 23:008h 30m7,60322K
6Sweetwater County, WYNovember 10, 2025 20:30November 11, 2025 01:455h 15m6,0414,061
7Sweetwater County, WYNovember 11, 2025 19:15November 11, 2025 20:151h5,7371,463
8Carbon County, WYAugust 25, 2025 02:15August 25, 2025 17:4515h 30m5,55184K
9Johnson County, WYNovember 13, 2025 16:00November 14, 2025 05:1513h 15m5,44820K
10Fremont County, WYJuly 11, 2025 06:15July 11, 2025 08:152h5,38311K
11Laramie County, WYNovember 5, 2025 03:45November 5, 2025 06:152h 30m4,8798,537
12Natrona County, WYMay 30, 2025 05:30May 30, 2025 07:302h4,6366,955
13Crook County, WYNovember 13, 2025 16:15November 14, 2025 06:1514h4,54524K
14Natrona County, WYDecember 16, 2025 16:30December 16, 2025 19:303h4,1123,562
15Crook County, WYDecember 17, 2025 22:30December 18, 2025 23:001d4,0388,435
16Laramie County, WYDecember 14, 2025 07:15December 14, 2025 07:4530m3,940986
17Weston County, WYNovember 13, 2025 20:00November 14, 2025 05:009h3,93317K
18Lincoln County, WYMarch 22, 2025 14:00March 22, 2025 17:453h 45m3,3733,108
19Carbon County, WYJune 29, 2025 02:30June 29, 2025 04:151h 45m3,1073,884
20Carbon County, WYFebruary 17, 2025 04:00February 17, 2025 12:458h 45m3,0951,556
21Laramie County, WYJune 3, 2025 04:30June 3, 2025 10:155h 45m3,01116K
22Fremont County, WYDecember 17, 2025 15:45December 19, 2025 23:002d 7h2,8864,702
23Albany County, WYSeptember 16, 2025 22:15September 17, 2025 17:4519h 30m2,73420K
24Natrona County, WYAugust 20, 2025 22:15August 21, 2025 04:456h 30m2,6918,453
25Converse County, WYDecember 17, 2025 17:15December 19, 2025 03:151d 10h2,6175,661
EAGLE-I tracked about n/a of Wyoming's electricity customers in 2025; outages at utilities it does not see are not counted. Hours per customer divide outage customer-minutes by modeled county customers.
Wyoming by year:2024202320222021202020192018201720162015
Other states in 2025:WVMIAKPAMOVANCAR

Part of the 2025 US Power Outage Report.

Data from DOE EAGLE-I, every source we read.