Select transmission projects
Learn more about our select transmission projects listed below:
Snowden Park project
Northwest Mississippi’s population and economic opportunities continue to grow year after year. To support this growth, Entergy Mississippi has launched a project designed to bring additional power to one of the fastest growing areas in Mississippi. The Snowden Park project calls for the construction of a new substation located along the Getwell Road corridor in Southaven. The work will support and enable economic growth in Northwest Mississippi as well as enhance reliability for our existing and future customers.
Grenada Industrial 115kV Substation
This load growth driven project is necessary to reliably serve near-term expected load growth incremental to a block-load addition Entergy signed in 2023. The block-load addition utilizes the remaining capacity of the current feeders and transformers feeding the Grenada Industrial Park area. In anticipation of future load growth within the available 600 acres of property at the industrial park, it is necessary to be proactive to build another substation in the park to serve additional industrial load growth to relieve the heavily loaded feeders in the City of Grenada.
Cost: Approximately $37.3 million.
Status: Completed – Summer 2025
Benefits: This project addresses projected load growth and reliability needs in the City of Grenada.
Mannsdale 230kV Substation
This project is needed to enhance reliability for existing customers and to meet projected customer growth in the rapidly developing area of west Madison County. The Mannsdale area is currently being served by circuits from the Flora, Bozeman, and Lake Castle substations. This project will provide capacity to support area customers and contingency relief for the substations.
Cost: Approximately $47.2 million.
Status: Completed – Summer 2025
Benefits: This project addresses projected load growth and reliability needs in the Madison County area.
Pine Tree 230kV Substation
This project is necessary due to the future load growth in the West Hernando area of Desoto County that is projected to cause overloading and voltage collapse on the three existing circuits serving the area. The construction of a new distribution substation will provide more capacity and improve system reliability for the West Hernando area.
Cost: Approximately $76.5 million.
Status: Completed – Spring 2025
Benefits: This project improves transmission reliability and addresses projected load growth in Desoto County.
Pickens – South Canton Line Rebuild
This NERC reliability driven project is necessary for Entergy Mississippi to maintain system reliability by mitigating an identified NERC contingency while providing additional load serving capability to the area.
Also, the project will replace 196 wood transmission poles consistent with the Company’s commitment under the Resiliency Ramp-up.
Cost: Approximately $36.4 million.
Status: The project is expected to be placed in service in the winter of 2025.
Benefits: This project addresses reliability needs across Entergy Mississippi’s central and northern regions.
Transmission Resiliency Ramp-Up Program
The Resiliency Ramp-Up Program is an accelerated program aiming to replace all wooden transmission structures on Entergy Mississippi’s grid to steel structures. Due to environmental factors, wood structures are subject to incur substantial damage, including rot. The replacement to steel structures will enhance the system’s resiliency against extreme weather events and other environmental factors.
Wood transmission structures are not being used with new projects. Thus, the population of wood structures in transmission is expected to decline over time as structure replacements and new lines are rebuilt to the newer standard. The Entergy Mississippi transmission system began this accelerated program in 2022 with ~15,500 wooden structures. Since then, EML has decreased the wooden structure to ~9,470 to date.
Status: The program is expected to be completed in approximately 11 years.
Benefits: This program addresses structure reliability concerns and enhances Entergy Mississippi’s system during extreme weather events.
As of November 2025. Subject to change.