Johnson City - (TN)

What This Utility Data Tells You

Johnson City - (TN) is a municipally-owned utility operating in Tennessee under EIA identifier 9777. It reports service to approximately 83,278 customer accounts and generated about $0.21 billion in annual electric revenue, with a service footprint spanning 6 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 Johnson City - (TN) customer experienced 107.2 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. Over the same period, SAIFI (outage events per customer) was 1.04, putting the typical customer at roughly 1 distinct interruption that year. Excluding major event days (hurricanes, ice storms), SAIDI drops to 39.6 minutes, the gap between that figure and the headline 107.2 reveals how much weather, not day-to-day infrastructure, drove outages.

Johnson City - (TN) 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 29.6 to 107.2 minutes over that window, a shift that can point to worsening weather exposure or delayed grid modernization.