South System Expansion 4 Project

Project Overview

On October 31, 2024, Southern Natural Gas, L.L.C. (SNG) and Elba Express Company, L.L.C. submitted a request to the Federal Energy Regulatory Commission (FERC) seeking approval to use the FERC’s pre-filing process for the proposed South System Expansion 4 Project (assigned Docket No. PF25-1-000).  

We have secured incremental long-term customer commitments on our South System Expansion 4 (SSE4) project of approximately 100 MMcf/d, resulting in an approximately $140 million increase in capex. Preliminary survey work is nearly complete on the project, which is designed to increase SNG’s South Line capacity by approximately 1.3 Bcf/d. The approximately $3.4 billion project will help meet growing power generation and local distribution company demand in the Southeast. SSE4 will be completed in two phases and is almost entirely comprised of brownfield looping and horsepower compression additions on the SNG and EEC pipeline systems (KM-share approximately $1.8 billion, including EEC). Assuming the timely receipt of all required permits and approvals, KMI expects to place the first phase of the project in service in the fourth quarter of 2028 and the second phase in the fourth quarter of 2029.