massoutage

2018 Arizona Power Outage Report

In 2018, the average Arizona customer went without power for about 1.9 hours, the 40th worst of 51 states (US average 5.3 hours). Figures from DOE/ORNL EAGLE-I, including major storm days.

Avg hrs / customer
1.9
vs prior year
▲ 80%
vs 2017
Customer-hours out
6.2M
Peak customers out
127,384
across the state at once
EAGLE-I coverage
87%
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, 2018

Customer-hours without power across Arizona; July was the worst.

CSVJSON
Arizona customer-hours without power by month, 2018Jan 168K, Feb 167K, Mar 179K, Apr 409K, May 439K, Jun 559K, Jul 1.8M, Aug 1.3M, Sep 281K, Oct 488K, Nov 301K, Dec 232K0500k1M1.5M2M168KJan167KFeb179KMar409KApr439KMay559KJun1.8MJul1.3MAug281KSep488KOct301KNov232KDec
Use the arrow keys to read values.

All 13 Arizona counties, 2018

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

CSVJSON
#CountyHrs / customerCustomer-hoursCustomersPeak outEvents
1Santa Cruz County20.327K1,3401,34035
2La Paz County10.689K8,4032,359127
3Pinal County5.1470K92,09816,371491
4Navajo County4.5382K84,38812,657602
5Gila County3.9115K29,4894,032197
6Coconino County2.3322K138,0905,518220
7Maricopa County2.13.7M1,742,493109,160222
8Yavapai County1.9460K246,4084,505397
9Yuma County1.7187K109,1005,498309
10Pima County0.7325K492,74412,332293
11Cochise County0.540K80,2273,623114
12Mohave County0.570K149,9285,72180
13Apache County0.413K29,5491,172245

Biggest Arizona outages of 2018

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

CSVJSON
#CountyStarted (UTC)Ended (UTC)DurationPeak outCustomer-hours
1Maricopa County, AZJuly 9, 2018 02:00July 10, 2018 04:301d 2h109,160599K
2Maricopa County, AZAugust 8, 2018 11:30August 18, 2018 11:009d 23h63,297598K
3Maricopa County, AZJuly 21, 2018 06:30July 31, 2018 15:1510d 8h38,908349K
4Maricopa County, AZJuly 10, 2018 05:45July 10, 2018 16:0010h 15m31,409165K
5Maricopa County, AZJune 15, 2018 20:30June 25, 2018 23:0010d 2h18,20164K
6Maricopa County, AZAugust 20, 2018 09:00September 1, 2018 01:4511d 16h17,427164K
7Pinal County, AZJuly 9, 2018 21:45July 10, 2018 16:3018h 45m16,371107K
8Maricopa County, AZAugust 1, 2018 08:15August 6, 2018 21:455d 13h13,211107K
9Navajo County, AZAugust 9, 2018 02:00August 10, 2018 18:301d 16h12,65742K
10Pima County, AZJuly 27, 2018 15:00July 28, 2018 17:001d 2h12,33223K
11Pinal County, AZJuly 31, 2018 01:45July 31, 2018 15:1513h 30m12,04426K
12Maricopa County, AZOctober 4, 2018 00:45October 17, 2018 22:0013d 21h11,704113K
13Maricopa County, AZMarch 16, 2018 02:30March 16, 2018 20:1517h 45m10,4933,725
14Maricopa County, AZFebruary 13, 2018 10:45February 18, 2018 07:004d 20h9,01330K
15Maricopa County, AZJuly 10, 2018 19:15July 13, 2018 22:003d 2h8,57159K
16Navajo County, AZOctober 16, 2018 10:00October 16, 2018 18:158h 15m8,42630K
17Navajo County, AZOctober 16, 2018 20:45October 16, 2018 21:0015m8,3262,082
18Navajo County, AZOctober 16, 2018 19:15October 16, 2018 19:3015m8,1302,033
19Maricopa County, AZJune 26, 2018 00:15July 1, 2018 00:155d7,34542K
20Pinal County, AZAugust 10, 2018 07:45August 11, 2018 04:4521h6,70116K
21Pima County, AZJanuary 15, 2018 13:30January 15, 2018 13:4515m6,4271,607
22Pima County, AZAugust 7, 2018 18:15August 8, 2018 04:1510h6,14832K
23Maricopa County, AZJuly 2, 2018 13:30July 9, 2018 00:006d 10h6,14048K
24Pima County, AZMay 29, 2018 21:15May 29, 2018 23:152h6,0726,100
25Pima County, AZFebruary 20, 2018 06:30February 20, 2018 07:451h 15m6,0657,512
EAGLE-I tracked about 87% of Arizona'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.
Arizona 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.