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New Caledonia Gas Plant

Lowndes County, Mississippi

Environmental Impact Statement

May 17, 2024

The Tennessee Valley Authority (TVA) plans to prepare an Environmental Impact Statement (EIS) to address the potential environmental impacts associated with construction and operation of six dual-fuel frame combustion turbines (CTs) capable of generating approximately 500 Megawatts (MW) at the existing New Caledonia (NCG) Site. The proposed CTs would support continued load growth within the Tennessee Valley and facilitate the integration of renewables onto the electric grid, thereby advancing TVA’s decarbonization goals. The CTs are needed to provide dispatchable generation capacity to ensure that TVA can reliably meet required year-round generation, maximum capacity system demands, planning reserve margin targets, and comply the requirement under the TVA Act that power be sold at rates as low as feasible.    

The NCG Site has a 63-acre CT facility, originally constructed in 1998 and operated for several years by a private company.  The company dismantled the site in 2007, removing the existing six frame CTs.  The adjacent TVA Lowndes County 500-kV Substation is approximately 82 acres and has remained in service. The proposed NCG would use an existing gas line currently located at the site.  A new interconnection and ancillary infrastructure (e.g., taps, meter station, pressure regulation equipment, etc.) would be required; however, construction of a new gas pipeline is not anticipated. 

Public Involvement

TVA issued a Notice of Intent on November 28, 2023 pursuant to the National Environmental Policy Act (NEPA) to consider the potential impacts on the environment associated with the proposal, scope of the review, and alternatives being considered. TVA will consider all comments received in the draft document.

TVA held an in-person open house was held on Monday, January 8, 2023, at the Caledonia Community located at 205 South St, Caledonia, MS 39740. Scoping comments were accepted between November 28, 2023 to January 19, 2024. 

Next Steps

Following completion of the environmental analysis, TVA will post a draft EIS for public review and comment on TVA’s Environmental Reviews web page for a minimum of 45-days. Please note that any comments received, including names and addresses, will become part of the project administrative record and will be available for public inspection. TVA expects to release the draft EIS in Summer 2024. TVA will hold an open house after releasing the draft EIS. Further details will be provided, including the date, time, and location on this web page. All comments received on the draft EIS will be considered prior to selecting an alternative. TVA anticipates completing the final EIS in Winter 2025. The final step in the NEPA review process is publication of the Record of Decision (ROD) in the Federal Register and on this webpage. In the ROD, TVA will announce the election of the No Action or Action Alternative.

Related Documents

Notice of Intent

Scoping Report


More information on this environmental review can be obtained from:

Erica McLamb
NEPA Project Manager
[email protected]
1101 Market St.
Chattanooga, TN 37402