massoutage

2021 Arizona Power Outage Report

In 2021, the average Arizona customer went without power for about 1.9 hours, the 45th worst of 51 states (US average 8.4 hours). Figures from DOE/ORNL EAGLE-I, including major storm days.

Avg hrs / customer
1.9
vs prior year
▲ 48%
vs 2020
Customer-hours out
6.1M
Peak customers out
77,761
across the state at once
EAGLE-I coverage
91%
of AZ customers
Counties reporting
13

Arizona year over year

Arizona: average hours without power per customer by year2015: 0.4h; 2016: 0.7h; 2017: 1.1h; 2018: 1.9h, coverage 87%; 2019: 1.3h, coverage 86%; 2020: 1.3h, coverage 90%; 2021: 1.9h, coverage 91%; 2022: 2.0h, coverage 91%; 2023: 2.0h; 2024: 1.6h; 2025: 1.6h01230%50%100%0.4h20150.7h20161.1h20171.9h20181.3h20191.3h20201.9h20212.0h20222.0h20231.6h20241.6h2025
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 Arizona; July was the worst.

CSVJSON
Arizona customer-hours without power by month, 2021Jan 473K, Feb 150K, Mar 276K, Apr 251K, May 250K, Jun 536K, Jul 1.8M, Aug 1.1M, Sep 328K, Oct 350K, Nov 206K, Dec 392K0500k1M1.5M2M473KJan150KFeb276KMar251KApr250KMay536KJun1.8MJul1.1MAug328KSep350KOct206KNov392KDec
Use the arrow keys to read values.

All 13 Arizona counties, 2021

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

CSVJSON
#CountyHrs / customerCustomer-hoursCustomersPeak outEvents
1Santa Cruz County15.621K1,3401,34042
2Gila County5.6164K29,48911,637180
3Pinal County5.0462K92,09815,541526
4La Paz County3.025K8,4032,40363
5Navajo County2.9241K84,38812,340609
6Mohave County2.2329K149,92841,824101
7Pima County1.9923K492,74427,249320
8Maricopa County1.83.2M1,742,49372,380463
9Coconino County1.6220K138,0908,869271
10Yavapai County1.5376K246,40815,426453
11Apache County1.133K29,5492,213310
12Yuma County1.0104K109,1006,291357
13Cochise County0.537K80,2275,26695

Biggest Arizona outages of 2021

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

CSVJSON
#CountyStarted (UTC)Ended (UTC)DurationPeak outCustomer-hours
1Maricopa County, AZAugust 11, 2021 06:15August 23, 2021 12:0012d 5h72,380548K
2Maricopa County, AZJanuary 25, 2021 15:15January 28, 2021 02:302d 11h51,106153K
3Mohave County, AZApril 16, 2021 21:15April 16, 2021 22:151h41,82421K
4Maricopa County, AZJuly 10, 2021 03:45July 14, 2021 22:454d 19h28,423309K
5Pima County, AZDecember 2, 2021 04:00December 13, 2021 20:4511d 16h27,24956K
6Pima County, AZJanuary 25, 2021 21:30January 28, 2021 14:302d 17h24,18375K
7Maricopa County, AZJuly 17, 2021 00:30July 26, 2021 21:009d 20h23,617263K
8Pima County, AZJuly 7, 2021 16:30July 28, 2021 20:4521d 4h21,567312K
9Maricopa County, AZOctober 3, 2021 15:00October 6, 2021 23:003d 8h19,56662K
10Pinal County, AZJuly 10, 2021 04:15July 12, 2021 07:002d 2h15,541166K
11Yavapai County, AZJuly 23, 2021 20:30July 24, 2021 13:3017h15,42631K
12Navajo County, AZSeptember 30, 2021 07:00September 30, 2021 18:0011h12,3405,072
13Maricopa County, AZNovember 14, 2021 23:00November 16, 2021 03:451d 4h11,94830K
14Gila County, AZJuly 18, 2021 23:15July 19, 2021 03:454h 30m11,63722K
15Pima County, AZSeptember 22, 2021 16:15October 14, 2021 02:3021d 10h11,51267K
16Pinal County, AZJuly 15, 2021 12:30July 15, 2021 20:007h 30m11,4856,421
17Gila County, AZJuly 11, 2021 00:45July 11, 2021 22:4522h11,01910K
18Mohave County, AZJuly 26, 2021 00:45July 26, 2021 05:154h 30m10,19220K
19Maricopa County, AZJune 18, 2021 20:00June 20, 2021 21:152d 1h9,92530K
20Maricopa County, AZOctober 11, 2021 13:00October 14, 2021 22:453d 9h9,63846K
21Maricopa County, AZJune 20, 2021 22:15June 27, 2021 05:456d 7h9,07239K
22Coconino County, AZDecember 24, 2021 03:00December 26, 2021 09:302d 6h8,86931K
23Maricopa County, AZJuly 14, 2021 23:45July 16, 2021 23:151d 23h8,66918K
24Navajo County, AZDecember 15, 2021 08:15December 21, 2021 02:005d 17h8,42338K
25Maricopa County, AZApril 21, 2021 00:45April 22, 2021 14:001d 13h8,32037K
EAGLE-I tracked about 91% of Arizona'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.
Arizona 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.