Maryville Utilities

What This Utility Data Tells You

Maryville Utilities is a municipally-owned utility operating in Tennessee under EIA identifier 11789. It reports service to approximately 22,947 customer accounts and generated about $0.07 billion in annual electric revenue, with a service footprint spanning 4 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 Maryville Utilities customer experienced 120.0 minutes of power interruptions, a measure known as SAIDI, or System Average Interruption Duration Index. That is comfortably under the 120–180 minute national benchmark range, a sign of solid grid resilience and quick outage response. Over the same period, SAIFI (outage events per customer) was 1.10, putting the typical customer at roughly 1 distinct interruption that year. Strip out major event days (hurricanes, ice storms) and SAIDI falls to 93.1 minutes; the difference from the headline 120.0 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 Maryville Utilities, which lets you see whether reliability is trending up or down rather than judging from a single snapshot. SAIDI has improved from 323.0 to 120.0 minutes over that window, a meaningful direction for prospective customers and regulators watching capital investment outcomes.