Stillwater Utilities Authority

What This Utility Data Tells You

Stillwater Utilities Authority is a municipally-owned utility operating in Oklahoma under EIA identifier 18125. It reports service to approximately 22,150 customer accounts and generated about $0.06 billion in annual electric revenue, with a service footprint spanning 4 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 Stillwater Utilities Authority customer experienced 128.4 minutes of power interruptions, a metric called SAIDI (System Average Interruption Duration Index). Excluding major weather events from that total, that keeps this utility below the typical 120–180 minute national benchmark, consistent with a well-hardened distribution system and fast restoration crews. SAIFI, the average number of outage events per customer, was 0.89 for the same period, so customers statistically faced roughly 1 distinct interruption that year. Excluding major event days (hurricanes, ice storms), SAIDI drops to 42.5 minutes, the gap between that figure and the headline 128.4 reveals how much weather, not day-to-day infrastructure, drove outages.

Stillwater Utilities Authority has 4 years of continuous EIA reporting on file (2020–2023), enough to read a real trend rather than a single-year snapshot. Over that window, SAIDI moved from 627.5 down to 128.4 minutes, a trend worth noting for anyone weighing capital investment outcomes.