Federal Energy Regulatory Commission Approves TC Louisiana Intrastate Pipeline LLC's $329 Million Expansion

Strategic Insights -

The Federal Energy Regulatory Commission (FERC) has issued an Environmental Assessment Report and Environmental Impact Statement for the proposed expansion of the TC Louisiana Intrastate Pipeline LLC (TCLI) in Louisiana. The project involves the construction of approximately 39.8 miles of 36-inch-diameter pipeline, two Solar Titan 130 turbines, and other facilities at a cost of $329 million. This expansion aims to increase the pipeline's capacity by 46,940 horsepower, enabling the transportation of up to 1.4 billion cubic feet of natural gas per day.

Key Takeaways:

  • The TCLI expansion project, worth $329 million, involves the construction of 39.8 miles of new pipeline, two Solar Titan 130 turbines, and other facilities in Beauregard and Calcasieu Parishes, Louisiana.
  • The project's design capacity would be up to 1.4 billion cubic feet per day, with an additional 46,940 horsepower of compression.
  • The Environmental Impact Assessment found that TCLI adequately addressed the requirements under 284.11(c), leading to a conclusion that the project has a Categorical Exclusion Environment Not Involved.
  • The project does not have a significant impact on the environment, as it meets all applicable environmental regulations and guidelines, including the Upland Erosion Control and Revegetation Plan and the Wetland and Waterbody Construction and Mitigation Procedures.
  • The project will be conducted in accordance with all necessary permits, authorizations, and consultations.
  • The proposed expansion was submitted by TC Louisiana Intrastate Pipeline LLC on July 15, 2025, with a Docket No. of CP25-521-000.
  • The project is regulated by the Louisiana Department of Energy and Natural Resources, Office of Conservation.

Statistics:

  • Total project cost: $329 million
  • Length of new pipeline: approximately 39.8 miles
  • Diameter of new pipeline: 36 inches
  • Design capacity of new pipeline: up to 1.4 billion cubic feet per day
  • Additional horsepower of compression: 46,940
  • Total horsepower after expansion: [not calculated]
  • Date of application submission: July 15, 2025
  • Date of Environmental Impact Assessment: July 22, 2025
  • Date of Approval: July 22, 2025

Sources:

  • Federal Energy Regulatory Commission Office of Energy Projects, Division of Gas-Environment & Engineering, Environmental Assessment Report, CP25-521-000, 7/22/2025.
  • TC Louisiana Intrastate Pipeline LLC, Advance Notification - Section 284.11(b), 7/15/2025.