McMinnville Electric System

Signature read: short interruption minutes vs the 911 utility cohort (≤96 min tercile cut).

What short-outage McMinnville Electric System filings show

McMinnville Electric System is a municipally-owned utility operating in Tennessee under EIA identifier 12186. It reports service to approximately 8,219 customer accounts and generated about $0.02 billion in annual electric revenue, with a service footprint spanning 2 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 McMinnville Electric System customer experienced 25.9 minutes of power interruptions, a measure known as SAIDI, or System Average Interruption Duration Index. Excluding major weather events from that total, that is comfortably under the 120–180 minute national benchmark range, a sign of solid grid resilience and quick outage response. The SAIFI figure, which tracks average outage events per customer, came in at 0.59 for the same period, meaning customers statistically saw about 1 distinct interruption that year. Excluding major event days (hurricanes, ice storms), SAIDI drops to 9.6 minutes, the gap between that figure and the headline 25.9 reveals how much weather, not day-to-day infrastructure, drove outages.

McMinnville Electric System 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 24.1 to 25.9 minutes over that window, a shift that can point to worsening weather exposure or delayed grid modernization.