208-mile underground gas pipeline proposed across Mississippi, Alabama
By Mary Holcomb, Digital Editor
(P&GJ) — Kinder Morgan’s Tennessee Gas Pipeline Company, L.L.C. (TGP) has filed a formal application with federal regulators to build the Mississippi Crossing Project (MSX), a $1.7 billion natural gas pipeline expansion designed to deliver 2.1 billion cubic feet per day (Bcf/d) of firm transportation capacity across Mississippi and Alabama.
The project includes 208 miles of new pipe — the centerpiece being a 199-mile, 42- and 36-inch mainline stretching from Greenville, Mississippi, to Butler, Alabama. Additional infrastructure includes three new compressor stations, multiple interconnects, and four metering facilities.
TGP submitted its Certificate of Public Convenience and Necessity application to the Federal Energy Regulatory Commission (FERC) on June 30, 2025, officially moving the project into the federal review phase. The filing followed the May 31 submission of all required environmental resource reports, which included consultations with regulatory agencies and other stakeholders.
SEE ALSO: 290-mile gas pipeline expansion proposed across Georgia, Alabama and South Carolina
The project is backed by strong market demand, with more than 90% of its capacity under long-term precedent agreements. Customers include major Southeast utilities and power generators such as Southern Company Services, Dominion Energy South Carolina, Tennessee Valley Authority, and the Municipal Gas Authority of Georgia. TGP affiliate Southern Natural Gas Company has secured 1.17 Bcf/d of capacity to serve downstream users.
TGP is requesting FERC approval by July 1, 2026, with construction scheduled to begin in January 2027 and the pipeline expected to enter service by November 2028.
An independent market analysis submitted with the application projects that natural gas demand in Mississippi and Alabama will grow by 8% by 2030, driven by coal retirements, increased electricity generation, and industrial activity. Current infrastructure in the region is operating near peak capacity.
In addition to enhancing energy reliability, the project is expected to provide a significant economic boost. TGP estimates it will support 4,760 to 9,820 average annual jobs across Mississippi, Alabama, and Georgia during construction, generating between $950 million and $2.4 billion in regional economic output.
To help reduce environmental and community impacts, approximately 28% of the proposed route will parallel existing infrastructure corridors, and several segments will be installed using horizontal directional drilling.
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