massoutage

2018 Wyoming Power Outage Report

In 2018, the average Wyoming customer went without power for about 1.2 hours, the 48th worst of 51 states (US average 5.3 hours). Figures from DOE/ORNL EAGLE-I, including major storm days.

Avg hrs / customer
1.2
vs prior year
▲ 28%
vs 2017
Customer-hours out
385K
Peak customers out
8,362
across the state at once
EAGLE-I coverage
62%
of WY customers
Counties reporting
22

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, 2018

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

CSVJSON
Wyoming customer-hours without power by month, 2018Jan 9,322, Feb 22K, Mar 45K, Apr 32K, May 35K, Jun 39K, Jul 45K, Aug 31K, Sep 73K, Oct 21K, Nov 22K, Dec 10K020k40k60k80k9,322Jan22KFeb45KMar32KApr35KMay39KJun45KJul31KAug73KSep21KOct22KNov10KDec
Use the arrow keys to read values.

All 22 Wyoming counties, 2018

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

CSVJSON
#CountyHrs / customerCustomer-hoursCustomersPeak outEvents
1Sublette County9.649K5,1235,123173
2Converse County8.061K7,6244,3331,239
3Big Horn County4.417K3,9301,765127
4Johnson County3.418K5,4483,638109
5Hot Springs County2.45,5392,3102,31092
6Albany County2.354K23,3037,483310
7Sweetwater County1.845K25,4756,095432
8Natrona County1.047K47,9922,694642
9Carbon County0.910K10,7672,004190
10Uinta County0.810K12,3681,867164
11Sheridan County0.813K17,618828112
12Lincoln County0.68,13112,8202,253151
13Park County0.68,02014,005632234
14Fremont County0.411K26,8233,560334
15Laramie County0.316K52,9873,081268
16Niobrara County0.31411
17Teton County0.11,08718,59229327
18Weston County0.01153,9334414
19Campbell County0.016128,060246
20Crook County0.054,54511
21Platte County-3,699-39424
22Washakie County-4,529-353115

Biggest Wyoming outages of 2018

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

CSVJSON
#CountyStarted (UTC)Ended (UTC)DurationPeak outCustomer-hours
1Albany County, WYMarch 15, 2018 22:45March 17, 2018 05:301d 6h7,48332K
2Albany County, WYJuly 16, 2018 16:15July 16, 2018 23:307h 15m6,5291,679
3Sweetwater County, WYJuly 11, 2018 14:30July 11, 2018 21:156h 45m6,0953,065
4Sweetwater County, WYAugust 1, 2018 15:15August 1, 2018 22:157h5,8118,135
5Sublette County, WYNovember 7, 2018 20:15November 7, 2018 21:0045m5,1232,562
6Sublette County, WYSeptember 11, 2018 05:15September 11, 2018 10:004h 45m5,12321K
7Converse County, WYSeptember 29, 2018 18:00September 30, 2018 09:0015h4,33323K
8Converse County, WYApril 23, 2018 21:45April 24, 2018 03:456h4,3158,542
9Sweetwater County, WYJune 8, 2018 20:45June 8, 2018 22:452h4,1234,743
10Johnson County, WYOctober 23, 2018 17:15October 23, 2018 18:301h 15m3,638921
11Johnson County, WYMay 31, 2018 19:15June 1, 2018 04:309h 15m3,61812K
12Johnson County, WYJanuary 6, 2018 05:00January 6, 2018 05:1515m3,617904
13Johnson County, WYMarch 23, 2018 00:00March 23, 2018 00:1515m3,611903
14Fremont County, WYNovember 13, 2018 01:00November 13, 2018 03:152h 15m3,5601,818
15Sweetwater County, WYAugust 22, 2018 20:00August 22, 2018 23:453h 45m3,0811,555
16Laramie County, WYMarch 16, 2018 16:45March 16, 2018 17:1530m3,0811,541
17Laramie County, WYFebruary 13, 2018 20:45February 13, 2018 21:0015m2,876719
18Fremont County, WYDecember 3, 2018 23:00December 4, 2018 02:003h2,803705
19Albany County, WYApril 11, 2018 09:30April 11, 2018 12:303h2,6956,064
20Natrona County, WYOctober 17, 2018 14:30October 17, 2018 20:306h2,6944,811
21Natrona County, WYMarch 7, 2018 20:30March 8, 2018 02:155h 45m2,6311,466
22Hot Springs County, WYJuly 10, 2018 18:15July 10, 2018 19:0045m2,310578
23Lincoln County, WYNovember 24, 2018 11:30November 24, 2018 13:001h 30m2,2532,779
24Fremont County, WYDecember 12, 2018 19:15December 12, 2018 20:301h 15m2,238562
25Sweetwater County, WYJuly 9, 2018 16:15July 10, 2018 03:4511h 30m2,2092,370
EAGLE-I tracked about 62% of Wyoming's electricity customers in 2018; outages at utilities it does not see are not counted. Hours per customer divide outage customer-minutes by modeled county customers.
Wyoming by year:2025202420232022202120202019201720162015
Other states in 2018:NCVAWVMARIVTMEMI

Part of the 2018 US Power Outage Report.

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