Washington-St Tammany E C, Inc

What This Utility Data Tells You

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.