massoutage

2021 Utah Power Outage Report

In 2021, the average Utah customer went without power for about 2.6 hours, the 37th worst of 51 states (US average 8.4 hours). Figures from DOE/ORNL EAGLE-I, including major storm days.

Avg hrs / customer
2.6
vs prior year
▼ 70%
vs 2020
Customer-hours out
3.3M
Peak customers out
22,603
across the state at once
EAGLE-I coverage
79%
of UT customers
Counties reporting
25

Utah year over year

Utah: average hours without power per customer by year2015: no data; 2016: no data; 2017: 1.0h; 2018: 1.9h, coverage 80%; 2019: 2.5h, coverage 80%; 2020: 8.6h, coverage 79%; 2021: 2.6h, coverage 79%; 2022: 2.7h, coverage 80%; 2023: 2.5h; 2024: 3.0h; 2025: 3.1h02.557.5100%50%100%n/a2015n/a20161.0h20171.9h20182.5h20198.6h20202.6h20212.7h20222.5h20233.0h20243.1h2025
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, 2021

Customer-hours without power across Utah; April was the worst.

CSVJSON
Utah customer-hours without power by month, 2021Jan 194K, Feb 130K, Mar 162K, Apr 543K, May 218K, Jun 274K, Jul 421K, Aug 364K, Sep 215K, Oct 336K, Nov 142K, Dec 288K0200k400k600k194KJan130KFeb162KMar543KApr218KMay274KJun421KJul364KAug215KSep336KOct142KNov288KDec
Use the arrow keys to read values.

All 25 Utah counties, 2021

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

CSVJSON
#CountyHrs / customerCustomer-hoursCustomersPeak outEvents
1Rich County13.413K980980132
2Morgan County11.934K2,9012,781137
3Beaver County9.614K1,4341,434215
4Juab County9.315K1,654787122
5Piute County8.75,61964362043
6Millard County7.231K4,3881,741253
7Grand County6.325K3,9983,998249
8Summit County6.1111K18,1063,676555
9Garfield County5.924K4,0651,72857
10Sevier County5.242K8,1082,243260
11Weber County4.1427K103,5289,719876
12Tooele County3.7107K28,8854,742888
13Sanpete County3.718K4,998526209
14Iron County3.079K26,6733,441498
15Cache County2.5125K49,74411,023514
16Utah County2.5593K239,2895,028502
17Salt Lake County2.51.2M494,04722,470457
18Carbon County2.49,1353,8492,224202
19Davis County1.9249K129,0958,279922
20Uintah County1.821K11,3742,294328
21Box Elder County1.841K23,0641,819434
22San Juan County1.47,1305,137912103
23Emery County1.03,7353,853249204
24Wasatch County0.917K19,6262,077145
25Washington County0.860K78,8834,969356

Biggest Utah outages of 2021

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

CSVJSON
#CountyStarted (UTC)Ended (UTC)DurationPeak outCustomer-hours
1Salt Lake County, UTOctober 3, 2021 11:15October 5, 2021 06:301d 19h22,47025K
2Salt Lake County, UTNovember 10, 2021 14:45November 11, 2021 07:3016h 45m13,2906,541
3Salt Lake County, UTFebruary 16, 2021 10:45February 17, 2021 07:4521h11,7534,615
4Cache County, UTAugust 13, 2021 05:30August 13, 2021 07:302h11,02320K
5Weber County, UTJuly 14, 2021 13:30July 15, 2021 05:4516h 15m9,71921K
6Weber County, UTFebruary 5, 2021 19:30February 5, 2021 19:4515m9,5722,393
7Weber County, UTApril 3, 2021 03:00April 3, 2021 08:455h 45m9,09713K
8Weber County, UTDecember 15, 2021 03:15December 17, 2021 05:452d 2h8,39532K
9Cache County, UTOctober 12, 2021 06:15October 16, 2021 03:453d 21h8,36965K
10Salt Lake County, UTJuly 21, 2021 12:30July 24, 2021 10:152d 21h8,36660K
11Davis County, UTSeptember 10, 2021 15:45September 11, 2021 22:301d 6h8,2798,466
12Davis County, UTAugust 9, 2021 18:15August 10, 2021 01:006h 45m8,0412,021
13Salt Lake County, UTOctober 19, 2021 09:00October 20, 2021 07:0022h7,98521K
14Salt Lake County, UTDecember 14, 2021 07:00December 20, 2021 05:005d 22h7,80577K
15Salt Lake County, UTFebruary 10, 2021 11:00February 11, 2021 08:4521h 45m7,5226,974
16Salt Lake County, UTMay 22, 2021 10:45May 26, 2021 09:453d 23h7,08733K
17Salt Lake County, UTJuly 1, 2021 12:00July 6, 2021 12:455d6,90637K
18Salt Lake County, UTDecember 26, 2021 09:45December 29, 2021 10:153d6,47619K
19Salt Lake County, UTJanuary 1, 2021 00:00January 1, 2021 02:302h 30m6,3175,246
20Salt Lake County, UTMarch 25, 2021 12:15March 26, 2021 02:3014h 15m6,1901,839
21Salt Lake County, UTMarch 11, 2021 13:45March 12, 2021 07:0017h 15m5,89611K
22Davis County, UTFebruary 15, 2021 08:15February 15, 2021 11:303h 15m5,84016K
23Salt Lake County, UTOctober 21, 2021 15:30October 22, 2021 02:0010h 30m5,72915K
24Salt Lake County, UTJune 8, 2021 09:15June 12, 2021 06:003d 20h5,44626K
25Salt Lake County, UTAugust 17, 2021 13:45August 26, 2021 12:158d 22h5,40056K
EAGLE-I tracked about 79% of Utah's electricity customers in 2021; outages at utilities it does not see are not counted. Hours per customer divide outage customer-minutes by modeled county customers.
Utah by year:2025202420232022202020192018201720162015
Other states in 2021:LAMIWVORTXMSKYNC

Part of the 2021 US Power Outage Report.

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