City of Chattanooga - (TN)

What This Utility Data Tells You

City of Chattanooga - (TN) is a municipally-owned utility operating in Tennessee under EIA identifier 3408. It reports service to approximately 185,102 customer accounts and generated about $0.56 billion in annual electric revenue, with a service footprint spanning 57 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 Chattanooga - (TN) customer experienced 286.2 minutes of power interruptions, the industry-standard SAIDI metric (System Average Interruption Duration Index). Excluding major weather events from that total, that places this utility well below the 120–180 minute national benchmark, signaling strong grid hardening and fast restoration practices. Over the same period, SAIFI (outage events per customer) was 1.73, putting the typical customer at roughly 2 distinct interruptions that year. Excluding major event days (hurricanes, ice storms), SAIDI drops to 77.7 minutes, the gap between that figure and the headline 286.2 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 Chattanooga - (TN), which lets you see whether reliability is trending up or down rather than judging from a single snapshot. SAIDI has improved from 1192.0 to 286.2 minutes over that window, a meaningful direction for prospective customers and regulators watching capital investment outcomes.