Kinder Morgan Advances Multiple Southeast Gas Pipeline Expansions

Kinder Morgan Advances Multiple Southeast Gas Pipeline Expansions

Kinder Morgan is advancing three Southeast natural gas pipeline expansions as power-sector demand tightens regional supply, according to the company’s own project pages.

The largest is the South System Expansion 4 Project (SSE4), a roughly $3.5 billion build for Southern Natural Gas Company (SNG) and Elba Express Company. FERC issued a final Environmental Impact Statement on June 26, 2026, and authorized the project with a certificate order on July 31, 2026. SSE4 will add approximately 1.3 Bcf/d of capacity to SNG’s South Main Line to meet growing power generation and local distribution company demand across the Southeast. The project is almost entirely brownfield looping and horsepower compression additions on the existing SNG and EEC systems, with Kinder Morgan’s own share around $1.8 billion. Assuming permits and approvals stay on schedule, the company expects to place the first phase in service in the fourth quarter of 2028 and the second phase in the fourth quarter of 2029.

A second project, the roughly $1.7 billion Mississippi Crossing Project (MSX) on Tennessee Gas Pipeline’s system, is designed to move gas from multiple supply basins into the Southeast for delivery to SNG and Transco.

Kinder Morgan is also developing the Bridge Project, connecting Elba Express Company’s existing system into Colleton County, South Carolina, adding another delivery point for Southeast demand growth.

What it means for subcontractors: SSE4’s brownfield scope, looping and added horsepower on an already-operating pipeline system, means welding, pipefitting, civil and compressor station work spread across two in-service dates roughly a year apart (Q4 2028 and Q4 2029), giving contractors a multi-year bidding window rather than a single mobilization. With the FERC certificate already issued, SSE4 has cleared its main regulatory hurdle and is a live procurement target now, not a speculative filing. Mississippi Crossing and the Bridge Project add further compression and lateral tie-in work along the same Southeast corridor. Firms with SNG, EEC, TGP or Transco system experience, or Georgia, Mississippi, Tennessee and South Carolina compressor station work, should track Kinder Morgan’s contractor prequalification process directly through the company’s project pages.