SAIDI
462 min per year
Yearly outage minutes, on average (2023)
Sevier County Electric System is a municipally-owned utility operating in Tennessee under EIA identifier 16949. It reports service to approximately 61,951 customer accounts and generated about $0.17 billion in annual electric revenue, with a service footprint spanning 15 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 Sevier County Electric System customer experienced 462.0 minutes of power interruptions, the industry-standard SAIDI metric (System Average Interruption Duration Index). Excluding major weather events from that total, that sits within the 120–180 minute national benchmark range, indicating performance typical of U.S. distribution utilities. SAIFI, the average number of outage events per customer, was 3.02 for the same period, so customers statistically faced roughly 3 distinct interruptions that year. Once major event days (hurricanes, ice storms) are excluded, SAIDI comes down to 215.0 minutes, and the spread against the headline 462.0 indicates how much weather, versus routine infrastructure, drove the outage total.
Sevier County 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. Over that window, SAIDI moved from 1566.5 down to 462.0 minutes, a trend worth noting for anyone weighing capital investment outcomes.
SAIDI
462 min per year
Yearly outage minutes, on average (2023)
SAIFI
3.02 interruptions/yr
Average interruption count (2023)
Customers
61,951
Tennessee service territory
462 minutes per customer per year
Annual minutes without electric service (2023)
| Year | SAIDI (min) | SAIDI nMED | SAIFI | Customers |
|---|---|---|---|---|
| 2020 | 1566.5 | 321.1 | 3.602 | 55,992 |
| 2021 | 222.6 | 191.5 | 2.100 | 57,873 |
| 2022 | 1854.0 | 458.0 | 4.960 | 59,547 |
| 2023 | 462.0 | 215.0 | 3.020 | 60,894 |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Sevier County Electric System serves 15 ZIP codes in Tennessee.
Sevier County Electric System had a SAIDI of 462.0 minutes in 2023 including major weather events, but 215.0 minutes excluding them (the IEEE-standard measure of day-to-day reliability, the gap reflects a major storm that year, not chronic performance). Leaving aside major weather events, that figure sits close to the national average.
Sevier County Electric System is classified as a Municipal serving Tennessee.
Sevier County Electric System serves approximately 61,951 customers in Tennessee.
Sevier County Electric System has 4 years of reliability data (2020-2023). SAIDI has remained relatively stable over this period. Review the trend table above for year-by-year detail.
Source: U.S. Energy Information Administration Form 861 annual electric power industry survey · ZIP service territory: OpenEI. Disclaimer: informational only, not professional advice. See full disclaimer.
Every figure on PlainUtility is rendered directly from the U.S. Energy Information Administration's Form 861 reliability data, no number is typed in by an editor. This utility's SAIDI/SAIFI figures are rendered directly from EIA Form 861 reliability files. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2020-2023.