Cooperative · Louisiana · EIA 21567
Washington-St Tammany E C, Inc
Cooperative · Louisiana · 55K customers. According to the U.S. Energy Information Administration's EIA Form 861, reliability for 2023 shows SAIDI 403 minutes/customer.
Reliability verdict
Washington-St Tammany E C, Inc shows below-average chronic reliability in 2023: 387 minutes SAIDI excluding major events across 55K customers.
- 403 min
- SAIDI 2023
- 3.55
- SAIFI 2023
- 387 min
- SAIDI ex-MED
- 55K
- 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 Washington-St Tammany E C, Inc filings show
Washington-St Tammany E C, Inc is a member-owned electric cooperative operating in Louisiana under EIA identifier 21567. It reports service to approximately 55,020 customer accounts and generated about $0.11 billion in annual electric revenue, with a service footprint spanning 40 ZIP codes. Cooperative ownership means the utility is run for the benefit of the ratepayer-members who elect its board, rather than for shareholder returns, which can shift how rate and investment decisions get made.
In 2023, the average Washington-St Tammany E C, Inc customer experienced 403.0 minutes of power interruptions, a metric called SAIDI (System Average Interruption Duration Index). That exceeds the 120–180 minute national benchmark by a wide margin, a pattern often tied to severe weather exposure, older infrastructure, or longer repair windows. SAIFI, the average number of outage events per customer, was 3.55 for the same period, so customers statistically faced roughly 4 distinct interruptions that year. Once major event days (hurricanes, ice storms) are excluded, SAIDI comes down to 386.6 minutes, and the spread against the headline 403.0 indicates how much weather, versus routine infrastructure, drove the outage total.
With 4 consecutive years of EIA data (2020–2023), Washington-St Tammany E C, Inc's reliability record can be judged on trend rather than one isolated year. SAIDI dropped from 700.3 to 403.0 minutes across that span, a direction regulators and prospective customers tend to watch closely.
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.
403 min/year per customer
Minutes without power per year (2023)
SAIDI by year (2020-2023)
Minutes per customer-year · EIA Form 861
Year-by-year SAIDI for Washington-St Tammany E C, Inc from the same EIA filings as the table below. Lower is better; major-event years can spike the headline figure.
Washington-St Tammany E C, Inc SAIDI trend
Washington-St Tammany E C, Inc vs the nationwide SAIDI distribution
Where this utility's headline SAIDI sits among every EIA Form 861 utility with a reported figure
403 Higher than most fewer outage minutes than 22% 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
Price vs. reliability
Where Washington-St Tammany E C, Inc sits on price vs. reliability
Among the 781 U.S. utilities large enough to report both revenue per customer and a recent outage record, Washington-St Tammany E C, Inc charges more per customer than 15% of them, and is more reliable (lower SAIDI) than 25% of them, placing it in the quadrant where it pays less and is less reliable. Revenue per customer and outage minutes are independent figures: paying more does not guarantee fewer outages.
Revenue per customer: $1,994/year · Latest SAIDI: 403.0 minutes/year.
SAIDI 2023 breakdown: 403.0 minutes
Reliability Trend (2020–2023)
| Year | SAIDI (min) | SAIDI nMED | SAIFI | Customers |
|---|---|---|---|---|
| 2020 | 700.3 | 292.5 | 4.128 | 53,944 |
| 2021 | 7545.8 | 613.0 | 5.787 | 54,701 |
| 2022 | 334.9 | 321.6 | 3.431 | 54,475 |
| 2023 | 403.0 | 386.6 | 3.554 | 55,406 |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Service Area
Washington-St Tammany E C, Inc serves 40 ZIP codes in Louisiana.
Frequently Asked Questions
How reliable is Washington-St Tammany E C, Inc?
Washington-St Tammany E C, Inc had a SAIDI of 403.0 minutes in 2023. Leaving aside major weather events, that figure runs above the national average, pointing to below-average reliability.
What type of utility is Washington-St Tammany E C, Inc?
Washington-St Tammany E C, Inc is classified as a Cooperative serving Louisiana.
How many customers does Washington-St Tammany E C, Inc serve?
Washington-St Tammany E C, Inc serves approximately 55,020 customers in Louisiana.
How has Washington-St Tammany E C, Inc's reliability changed over time?
Washington-St Tammany E C, Inc 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.
Utility Profile
- Type
- Cooperative
- State
- Louisiana
- Customers
- 55,020
- Annual Revenue
- $0.11B
- EIA ID
- 21567
Explore
Utilities with similar EIA profiles
Two cross-state peer sets for Washington-St Tammany E C, 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 (55K here), outside Louisiana.
Similar chronic SAIDI
Nearest utilities by latest SAIDI minutes (403.0 here), outside Louisiana, 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.