Cooperative · Tennessee · EIA 40166
Chickasaw Electric Coop, Inc
Cooperative · Tennessee · 23K customers. According to the U.S. Energy Information Administration's EIA Form 861, reliability for 2022 shows SAIDI 1365 minutes/customer.
Reliability verdict
Chickasaw Electric Coop, Inc shows below-average chronic reliability in 2022: 531 minutes SAIDI excluding major events (1365 minutes including them) across 23K customers.
- 1365 min
- SAIDI 2022
- 5.70
- SAIFI 2022
- 531 min
- SAIDI ex-MED
- 23K
- Customers
Chronic reliability judged on SAIDI excluding major event days when reported (IEEE 1366). Source: EIA Form 861 · August 2026.
Signature read: long interruption minutes vs the 911 utility cohort (>258 min tercile cut).
What long-outage Chickasaw Electric Coop, Inc filings show
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.
Based on this utility's own EIA Form 861 reliability record -- baseline (major-event- excluded) outage duration, total outage duration, and outage frequency -- each benchmarked against every reporting utility nationwide. Not a measure of electricity rates or customer service, which this portal does not track.
1365 minutes per customer per year
Minutes without power per year (2022)
SAIDI by year (2020-2022)
Minutes per customer-year · EIA Form 861
Year-by-year SAIDI for Chickasaw Electric Coop, Inc from the same EIA filings as the table below. Lower is better; major-event years can spike the headline figure.
Chickasaw Electric Coop, Inc SAIDI trend
Chickasaw Electric Coop, Inc vs the nationwide SAIDI distribution
Where this utility's headline SAIDI sits among every EIA Form 861 utility with a reported figure
1,365 Higher than most fewer outage minutes than 4% of 911 utilities
Utilities nationwide, banded by latest reported SAIDI (minutes)
Each bar is a band; taller bars hold more utilities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source U.S. EIA Form 861 reliability filings · August 2026
SAIDI 2022 breakdown: 1364.6 minutes
Reliability Trend (2020–2022)
| Year | SAIDI (min) | SAIDI nMED | SAIFI |
|---|---|---|---|
| 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.
Service Area
Chickasaw Electric Coop, Inc serves 16 ZIP codes in Tennessee.
Frequently Asked Questions
How reliable is Chickasaw Electric Coop, Inc?
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.
What type of utility is Chickasaw Electric Coop, Inc?
Chickasaw Electric Coop, Inc is classified as a Cooperative serving Tennessee.
How many customers does Chickasaw Electric Coop, Inc serve?
Chickasaw Electric Coop, Inc serves approximately 22,670 customers in Tennessee.
How has Chickasaw Electric Coop, Inc's reliability changed over time?
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.
Utility Profile
- Type
- Cooperative
- State
- Tennessee
- Customers
- 22,670
- Annual Revenue
- $0.05B
- EIA ID
- 40166
Explore
Utilities with similar EIA profiles
Two cross-state peer sets for Chickasaw Electric Coop, Inc. Same-state SAIDI neighbors stay in Read-with below; these neighborhoods are nearest other-state utilities with at least 10,000 reported customers.
Similar customer count
Nearest utilities by Form 861 customers (23K here), outside Tennessee.
Similar chronic SAIDI
Nearest utilities by latest SAIDI minutes (1364.6 here), outside Tennessee, excluding the customer-peer set.
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 · methodology.