Spokesman Mike Burns says construction is expected to begin next year in Westlake, near Lake Charles. The company says in a news release that the 994-megawatt combined-cycle plant should be in service by June 2020.
Entergy says the plant is expected to save customers between $1.3 billion and $2 billion over the next 30 years. It says savings will include lower dependence on aging, less efficient plants, and avoiding about $600 million in transmission projects that would otherwise be needed in the area.
It was approved Wednesday by the state Public Service Commission.
Entergy Louisiana serves customers in southern, central and northeastern Louisiana. It's a subsidiary of Entergy Corp.