Knoxville Utilities Board

What This Utility Data Tells You

Knoxville Utilities Board is a municipally-owned utility operating in Tennessee under EIA identifier 10421. It reports service to approximately 216,175 customer accounts and generated about $0.61 billion in annual electric revenue, with a service footprint spanning 45 ZIP codes. Being municipally owned, the utility answers to a local board or city council rather than a state commission, and carries a federal income tax exemption.

In 2023, the average Knoxville Utilities Board customer experienced 363.0 minutes of power interruptions, the industry-standard SAIDI metric (System Average Interruption Duration Index). Excluding major weather events from that total, that lands within the usual 120–180 minute national benchmark band, roughly on par with typical U.S. distribution-utility performance. SAIFI, the average number of outage events per customer, was 2.42 for the same period, so customers statistically faced roughly 2 distinct interruptions that year. Strip out major event days (hurricanes, ice storms) and SAIDI falls to 123.6 minutes; the difference from the headline 363.0 shows how much of the outage total came from weather rather than everyday grid issues.

The EIA dataset includes 4 years of continuous reporting (2020–2023) for Knoxville Utilities Board, which lets you see whether reliability is trending up or down rather than judging from a single snapshot. Over that span, SAIDI rose from 279.0 to 363.0 minutes, possibly reflecting tougher weather years or grid upgrades that have not caught up yet.