SAIDI
1057 min per year
Mean outage duration per year (2023)
Volunteer Electric Coop is a member-owned electric cooperative operating in Tennessee under EIA identifier 19898. It reports service to approximately 126,279 customer accounts and generated about $0.27 billion in annual electric revenue, with a service footprint spanning 70 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 2023, the average Volunteer Electric Coop customer experienced 1056.7 minutes of power interruptions, the industry-standard SAIDI metric (System Average Interruption Duration Index). Excluding major weather events from that total, that is substantially above the 120–180 minute national benchmark, indicating either storm-prone geography, aging infrastructure, or extended restoration windows. Over the same period, SAIFI (outage events per customer) was 6.37, putting the typical customer at roughly 6 distinct interruptions that year. Once major event days (hurricanes, ice storms) are excluded, SAIDI comes down to 429.5 minutes, and the spread against the headline 1056.7 indicates how much weather, versus routine infrastructure, drove the outage total.
The EIA dataset includes 4 years of continuous reporting (2020–2023) for Volunteer Electric Coop, which lets you see whether reliability is trending up or down rather than judging from a single snapshot. Over that span, SAIDI rose from 271.5 to 1056.7 minutes, possibly reflecting tougher weather years or grid upgrades that have not caught up yet.
SAIDI
1057 min per year
Mean outage duration per year (2023)
SAIFI
6.37 interruptions/yr
Events per customer (2023)
Customers
126,279
Customers across Tennessee
1057 minutes per customer per year
Annual minutes without electric service (2023)
| Year | SAIDI (min) | SAIDI nMED | SAIFI | Customers |
|---|---|---|---|---|
| 2020 | 271.5 | 52.1 | 2.742 | 119,943 |
| 2021 | 516.3 | 320.4 | 5.130 | 121,898 |
| 2022 | 523.4 | 402.5 | 4.561 | 124,256 |
| 2023 | 1056.7 | 429.5 | 6.370 | 126,442 |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Volunteer Electric Coop serves 70 ZIP codes in Tennessee.
Volunteer Electric Coop had a SAIDI of 1056.7 minutes in 2023 including major weather events, but 429.5 minutes excluding them (the industry-standard measure of routine reliability, so the gap traces back to a major storm that year, not a chronic issue). Excluding major storm impacts, this trails the national average, indicating below-average reliability.
Volunteer Electric Coop is classified as a Cooperative serving Tennessee.
Volunteer Electric Coop serves approximately 126,279 customers in Tennessee.
Volunteer Electric Coop 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.