Tennessee Valley Electric Coop

What This Utility Data Tells You

Tennessee Valley Electric Coop is a member-owned electric cooperative operating in Tennessee under EIA identifier 18643. It reports service to approximately 20,579 customer accounts and generated about $0.05 billion in annual electric revenue, with a service footprint spanning 20 ZIP codes. Being member-owned, this cooperative answers to its ratepayers rather than outside shareholders, a structure that tends to influence how rate cases and capital spending get decided.

In 2022, the average Tennessee Valley Electric Coop customer experienced 10.9 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. Once major event days (hurricanes, ice storms) are excluded, SAIDI comes down to 6.2 minutes, and the spread against the headline 10.9 indicates how much weather, versus routine infrastructure, drove the outage total.

The EIA dataset includes 3 years of continuous reporting (2020–2022) for Tennessee Valley Electric Coop, which lets you see whether reliability is trending up or down rather than judging from a single snapshot. SAIDI has improved from 367.0 to 10.9 minutes over that window, a meaningful direction for prospective customers and regulators watching capital investment outcomes. Note: this figure is unusually low compared to typical U.S. utility performance and may reflect an incomplete EIA filing for this year rather than a genuine reliability improvement -- treat with caution and cross-check against Tennessee Valley Electric Coop's other reported years.