massoutage

2021 Arizona Power Outage Report

In 2021, the average Arizona customer went without power for about 1.9 hours — the 45th worst of any US state that year, 1.3× the state's decade average. Figures from DOE/ORNL EAGLE-I.

Avg hrs / customer
1.9
Peak customers out
72,380
Rank (worst state)
45th
Counties affected
13

Arizona outages over the decade

Average hours without power per customer, 2021 highlighted.

0.4h20150.7h20161.1h20171.9h20181.3h20191.3h20201.9h20212.0h20222.1h20231.7h20241.6h2025

Hardest-hit Arizona counties in 2021

By peak customers out during the year's worst event.

1Maricopa County72,3802Mohave County41,8243Pima County27,2494Pinal County15,5415Yavapai County15,4266Navajo County12,3407Gila County11,6378Coconino County8,8699Yuma County6,29110Cochise County5,26611La Paz County2,40312Apache County2,21313Santa Cruz County2,030

Biggest Arizona outages of 2021

CountyBeganPeak customers out
Maricopa CountyAugust 11, 202172,380
Maricopa CountyJanuary 25, 202151,106
Mohave CountyApril 16, 202141,824
Maricopa CountyJuly 10, 202128,423
Pima CountyDecember 2, 202127,249
Pima CountyJanuary 25, 202124,183
Maricopa CountyJuly 17, 202123,617
Pima CountyJuly 7, 202121,567
Maricopa CountyOctober 3, 202119,566
Pinal CountyJuly 10, 202115,541
Arizona by year:20252024202320222020201920182017
Other states in 2021:LAMIWVTXORMS

Part of the 2021 US Power Outage Report. Source: DOE/ORNL EAGLE-I. “Avg hours per customer” is a SAIDI-like measure (outage customer-minutes ÷ tracked customers); coverage varies by year.