City of San Antonio - (TX)

What This Utility Data Tells You

City of San Antonio - (TX) is a municipally-owned utility operating in Texas under EIA identifier 16604. It reports service to approximately 938,628 customer accounts and generated about $2.71 billion in annual electric revenue, with a service footprint spanning 117 ZIP codes. As a municipal utility, it is typically governed by a local board or city council and is exempt from federal income tax.

In 2023, the average City of San Antonio - (TX) customer experienced 169.7 minutes of power interruptions — a metric called SAIDI (System Average Interruption Duration Index). That sits within the 120–180 minute national benchmark range, indicating performance typical of U.S. distribution utilities. SAIFI — the average number of outage events per customer — was 1.65 for the same period, so customers statistically faced roughly 2 distinct interruptions that year. Excluding major event days (hurricanes, ice storms), SAIDI drops to 61.2 minutes — the gap between that figure and the headline 169.7 reveals how much weather, not day-to-day infrastructure, drove outages.

The EIA dataset includes 4 years of continuous reporting (2020–2023) for City of San Antonio - (TX), which lets you see whether reliability is trending up or down rather than judging from a single snapshot. SAIDI has increased from 94.0 to 169.7 minutes, which may reflect either worsening weather exposure or delayed grid modernization. All figures on this page come directly from EIA Form 861, the federal annual electric power industry survey, with service territory ZIPs sourced from OpenEI — you can cross-reference them with your own utility bill or use them when comparing providers before relocating.