Oakville to Alliance 230kV Transmission Line Project

Entergy Louisiana has completed a major element of a multi-million dollar program to enhance service reliability to Plaquemines Parish customers and meet the needs of a growing economy.

The overall program involved a series of projects to build a 230 kV transmission path between the Peters Road substation in Jefferson Parish and the Alliance substation. The first project involved expanding the Peters Road substation to supply the new 230 kV line. The second project involved rebuilding the Oakville substation to serve as a new 230/14kV distribution substation and constructing a new 230 kV transmission line between the Peters Road and Oakville substations.

On March 16, Entergy Louisiana put into service a new 10.5-mile-long transmission line between the Oakville substation, off Walker Road in Belle Chasse, and the Alliance substation, west of Louisiana Highway 23 near the Phillips 66 refinery. The new 230-kV transmission line will increase the reliability of service to both residential and industrial customers by providing an additional source to the existing transmission system.

The last phase of the project will be to construct roughly seven miles of new 34-kV distribution line on the lower portion of the new steel transmission structures, which are built to withstand winds of up to 150 mph, along Highway 23. All customers currently served by the existing distribution line on older wooden poles along that section of Highway 23 will be served by the new distribution line. Entergy Louisiana expects to complete work on the distribution lines near the end of 2018.

The Power to Grow

We want to make sure Plaquemines Parish has the clean, reliable and affordable power needed to continue growing its economy. The Oakville-Alliance transmission line will help reliably deliver the power required to meet the needs of Plaquemines' thriving business community as well as satisfy the demands of existing customers. 

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