SAIDI
555 min per year
Average outage minutes (2023)
Meriwether Lewis Electric Coop is a member-owned electric cooperative operating in Tennessee under EIA identifier 12330. It reports service to approximately 36,203 customer accounts and generated about $0.11 billion in annual electric revenue, with a service footprint spanning 37 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 Meriwether Lewis Electric Coop customer experienced 554.9 minutes of power interruptions, a measure known as SAIDI, or 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. The SAIFI figure, which tracks average outage events per customer, came in at 2.21 for the same period, meaning customers statistically saw about 2 distinct interruptions that year. Excluding major event days (hurricanes, ice storms), SAIDI drops to 170.2 minutes, the gap between that figure and the headline 554.9 reveals how much weather, not day-to-day infrastructure, drove outages.
With 4 consecutive years of EIA data (2020–2023), Meriwether Lewis Electric Coop's reliability record can be judged on trend rather than one isolated year. SAIDI dropped from 910.8 to 554.9 minutes across that span, a direction regulators and prospective customers tend to watch closely.
SAIDI
555 min per year
Average outage minutes (2023)
SAIFI
2.21 interruptions/yr
Outage frequency (2023)
Customers
36,203
Tennessee service territory
555 outage minutes per customer annually
Minutes without power per year (2023)
| Year | SAIDI (min) | SAIDI nMED | SAIFI | Customers |
|---|---|---|---|---|
| 2020 | 910.8 | 304.1 | 2.257 | - |
| 2021 | 6.2 | 4.4 | 2.399 | - |
| 2022 | 5.8 | 4.3 | 2.692 | - |
| 2023 | 554.9 | 170.2 | 2.211 | - |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Meriwether Lewis Electric Coop serves 37 ZIP codes in Tennessee.
Meriwether Lewis Electric Coop had a SAIDI of 554.9 minutes in 2023 including major weather events, but 170.2 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.
Meriwether Lewis Electric Coop is classified as a Cooperative serving Tennessee.
Meriwether Lewis Electric Coop serves approximately 36,203 customers in Tennessee.
Meriwether Lewis Electric Coop has 4 years of reliability data (2020-2023). This utility's SAIDI has stayed fairly flat over the 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.