City of Mesa - (AZ)

What This Utility Data Tells You

City of Mesa - (AZ) is a municipally-owned utility operating in Arizona under EIA identifier 12351. It reports service to approximately 17,787 customer accounts and generated about $0.05 billion in annual electric revenue, with a service footprint spanning 31 ZIP codes. Municipal ownership means a local board or city council typically oversees this utility, and it is exempt from federal income tax.

In 2023, the average City of Mesa - (AZ) customer experienced 86.2 minutes of power interruptions, a metric called SAIDI (System Average Interruption Duration Index). Excluding major weather events from that total, that is comfortably under the 120–180 minute national benchmark range, a sign of solid grid resilience and quick outage response. The SAIFI figure, which tracks average outage events per customer, came in at 1.01 for the same period, meaning customers statistically saw about 1 distinct interruption that year. Once major event days (hurricanes, ice storms) are excluded, SAIDI comes down to 10.6 minutes, and the spread against the headline 86.2 indicates how much weather, versus routine infrastructure, drove the outage total.

With 4 consecutive years of EIA data (2020–2023), City of Mesa - (AZ)'s reliability record can be judged on trend rather than one isolated year. Over that span, SAIDI rose from 72.0 to 86.2 minutes, possibly reflecting tougher weather years or grid upgrades that have not caught up yet.