SAIDI
1365 min per year
Mean outage duration per year (2022)
Chickasaw Electric Coop, Inc is a member-owned electric cooperative operating in Tennessee under EIA identifier 40166. It reports service to approximately 22,670 customer accounts and generated about $0.05 billion in annual electric revenue, with a service footprint spanning 16 ZIP codes. As a cooperative, its governance is accountable to its ratepayer-members rather than shareholders, which often shapes rate-setting and reinvestment priorities.
In 2022, the average Chickasaw Electric Coop, Inc customer experienced 1364.6 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. SAIFI, the average number of outage events per customer, was 5.70 for the same period, so customers statistically faced roughly 6 distinct interruptions that year. Once major event days (hurricanes, ice storms) are excluded, SAIDI comes down to 531.1 minutes, and the spread against the headline 1364.6 indicates how much weather, versus routine infrastructure, drove the outage total.
The EIA dataset includes 3 years of continuous reporting (2020–2022) for Chickasaw Electric Coop, Inc, which lets you see whether reliability is trending up or down rather than judging from a single snapshot. Over that span, SAIDI rose from 206.4 to 1364.6 minutes, possibly reflecting tougher weather years or grid upgrades that have not caught up yet.
SAIDI
1365 min per year
Mean outage duration per year (2022)
SAIFI
5.70 interruptions/yr
Outage frequency (2022)
Customers
22,670
Tennessee service territory
1365 minutes per customer per year
Minutes without power per year (2022)
| Year | SAIDI (min) | SAIDI nMED | SAIFI | Customers |
|---|---|---|---|---|
| 2020 | 206.4 | 206.4 | 2.450 | - |
| 2021 | 4.0 | 4.0 | 2.866 | - |
| 2022 | 1364.6 | 531.1 | 5.696 | - |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Chickasaw Electric Coop, Inc serves 16 ZIP codes in Tennessee.
Chickasaw Electric Coop, Inc had a SAIDI of 1364.6 minutes in 2022 including major weather events, but 531.1 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.
Chickasaw Electric Coop, Inc is classified as a Cooperative serving Tennessee.
Chickasaw Electric Coop, Inc serves approximately 22,670 customers in Tennessee.
Chickasaw Electric Coop, Inc has 3 years of reliability data (2020-2022). 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.