Salt River Project

What This Utility Data Tells You

Salt River Project is a municipally-owned utility operating in Arizona under EIA identifier 16572. It reports service to approximately 1,141,630 customer accounts and generated about $3.40 billion in annual electric revenue, with a service footprint spanning 136 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 Salt River Project customer experienced 70.0 minutes of power interruptions, a measure known as SAIDI, or System Average Interruption Duration Index. That is comfortably under the 120–180 minute national benchmark range, a sign of solid grid resilience and quick outage response. Over the same period, SAIFI (outage events per customer) was 1.01, putting the typical customer at roughly 1 distinct interruption that year. Excluding major event days (hurricanes, ice storms), SAIDI drops to 49.2 minutes, the gap between that figure and the headline 70.0 reveals how much weather, not day-to-day infrastructure, drove outages.

Salt River Project has 4 years of continuous EIA reporting on file (2020–2023), enough to read a real trend rather than a single-year snapshot. SAIDI climbed from 47.3 to 70.0 minutes over that window, a shift that can point to worsening weather exposure or delayed grid modernization.