Entergy on Nov. 4 announced the completion of Entergy Louisiana’s nearly $100m project, which covered about 900 square miles, almost all of which is within Jefferson Davis Parish, La., and included the construction of new transmission lines, as well as rebuilding many existing lines.
Company spokesperson Lee Sabatini on Nov. 4 told TransmissionHub that the Southwest Louisiana 69-kV Reliability Improvement Project involved these new lines:
- The Henning-Bayou Cove 138-kV line, which starts in Welsh, La., and ends in Jennings, La.
- The Henning-Lake Charles Bulk 138-kV line, which starts in Welsh and ends in Lake Charles, La.
- The Henning-Carter 69-kV line, which starts in Welsh and ends in Kinder, La.
- The Henning-Lacassine 69-kV line, which starts in Welsh and ends in Lacassine, La.
- The Henning-Colonial Welsh 138-kV line, which starts in Welsh and ends in Welsh
- The Henning-Elton 69-kV line, which starts in Welsh and ends in Elton, La.
Entergy said that the new and rebuilt sections of line 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 that in total, about 58 miles of lines were added or upgraded. The project also included the construction of a new substation located in Welsh; Sabatini noted that that substation is named the Henning substation.
The company added that to ensure the reliability of the new and upgraded transmission lines, five substations were modified to replace such equipment as protective relays and circuit breakers. Sabatini said that those modified substations are the:
- Carter 69-kV substation
- Duroen 69-kV substation
- Roanoke 69-kV substation
- Lake Charles Bulk 138-kV substation
- Bayou Cove 138-kV substation
Entergy said that Entergy Louisiana plans to invest more than $4bn through 2021 to modernize and strengthen the state’s infrastructure to enhance reliability and meet the growing needs of the state’s residents and businesses in the future.