Entergy Louisiana to start $100 million transmission upgrade soon

The upgrade covers about 900 square miles, almost all of which is within Jefferson Davis Parish, the company said

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Entergy said that Entergy Louisiana will begin construction in January 2018 on a nearly $100 million technological upgrade to its electric power transmission grid in Jefferson Davis Parish in Louisiana.

The project will enhance reliability, increase transmission capacity, and help ensure the availability of affordable power now and into the future for the parish, according to Entergy Louisiana.

The upgrade covers about 900 square miles, almost all of which is within Jefferson Davis Parish, and encompasses the construction of some new transmission lines, as well as rebuilding many existing lines, the company said.

Both the new and rebuilt sections of line will use steel structures that can withstand winds of up to 140 miles per hour and employ reinforced high-voltage wire that will move power more reliably and efficiently, the company said.

An Entergy spokesperson on Dec. 12 told TransmissionHub that there are multiple new lines and existing lines that will be rebuilt as part of the Southwest Louisiana 69kV Improvement Project.

“We will be replacing the existing Colonial Welsh [138-kV] tap line with two new [138-kV] lines (Henning-Lake Charles Bulk and Henning-Bayou Cove),” he said. “We will be installing a new [69-kV] line between the new Henning Substation and the existing Carter Substation. We will also be rebuilding the existing Carter-Serpent and Compton-Elton [69-kV] lines. Finally we will be installing two new [69-kV] lines from the new Henning Substation to the Line 13 Tap location.”

The hub of the project will center around the new Henning substation, the company said in its statement, adding that most of the construction will take place between the Compton and Elton substations along Louisiana Highway 395, across farm fields between the Carter and Serpent substations, and along Louisiana Highway 90 between the Derouen and Lawtag substations.

In total, about 58 miles of lines will be added or upgraded, the company said.

Depending upon weather and other variables, the project is currently scheduled to be completed by February 2020, Entergy said.

The company also noted that it has developed a communication plan to keep communities, businesses, institutions, and government agencies up to date on the project's progress. Residents should expect lane closures and possible traffic delays associated with the work, Entergy said.

Noting that it has identified a few locations that will require brief service interruptions as a result of the project, Entergy said that it will provide advance notice to all affected customers so customers can plan accordingly.

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