Entergy (NYSE:ETR) on Dec. 4 said that Entergy Louisiana will begin construction in January 2018 on an approximately $100m 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, the company said.
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.
Work in Mississippi
Entergy on Nov. 30 said that Entergy Mississippi is investing more than $2.5m in improvements in four Mississippi Delta counties – Bolivar, Humphreys, Leflore, and Sunflower counties – that will harden the system against storms and outages, while also making it more resistant to cyber-attacks and physical threats.
Entergy said that it has completed or is working on the following projects in these counties:
- Vegetation management – The company is spending nearly $800,000 to trim vegetation from 325 miles of line and 13 circuits
- Substation work – Nearly $200,000 will be spent at the South Cleveland substation for maintenance and repair with the bulk going toward the installation of a Vanquish fence, specialty fencing that deters animal intrusions, which is a common reason for outages
- Equipment replacement – More than $1.6m will be spent replacing and upgrading existing equipment
In a Nov. 16 statement, Entergy said that Entergy Mississippi is investing some $10m in making energy service in the communities in Hinds County, Miss., even safer and more reliable – the investment is in addition to nearly $16.6m being spent on similar projects in Jackson, Miss.
Entergy said that it has completed or is working on the following projects in Hinds County:
- Vegetation management – The company is spending more than $1.6m to trim vegetation from 515 miles of line in Clinton, Byram, Terry, Edwards and Bolton
- Substation work – Some $6.2m will be spent on two new distribution substations that will be in service by the end of 2017 or early 2018, the Tinnin Road substation in northern Hinds County and the Wynndale substation south of Byram
- Equipment replacement – More than $2.2m will be spent replacing and upgrading existing equipment, with nearly $500,000 of that going toward reliability projects that address areas that have experienced numerous outages over a short period of time
In both statements, company officials said that the investments are part of a multi-year investment designed to strengthen all parts of Entergy’s grid to help reduce power outages.
Entergy noted that last year, it spent more than $66.5m on reliability projects in its 45-county Mississippi service area.