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Independent regulatory commissions

Federal Energy Regulatory Commission Approves Spire MoGas Pipeline Merger

Strategic Insights

— 1 min read

The Federal Energy Regulatory Commission (FERC) has issued an environmental assessment report and environmental impact statement approving the merger of Spire MoGas Pipeline LLC (Spire MoGas) and Spire STL Pipeline LLC (Spire STL). The proposed consolidation of the two companies' natural gas transportation facilities is expected to increase administrative efficiencies, streamline transactions for customers, and improve reliability. The merger will not have any significant impact on the environment, landowners, or customers.

Key Takeaways:

  • The merger involves the consolidation of Spire STL's facilities into Spire MoGas's existing interstate natural gas operations.
  • The proposed application and consolidation of facilities are expected to increase administrative efficiencies, streamline transactions for customers, and improve reliability with greater physical and operational redundancies.
  • The merger will not have any significant impact on the environment, landowners, or customers.
  • The Spire STL facilities will be treated as a new rate zone on the Spire MoGas system.
  • Spire STL will abandon its Part 157 subpart F blanket certificate and Part 284 subpart G blanket certificate issued in Docket Nos. CP17-40-000, et al.
  • The merger is expected to enhance customers' market flexibility and access to natural gas supplies.
  • The proposed merger involves no construction or modification of facilities.

Statistics:

  • The proposed merger involves the consolidation of Spire STL's facilities into Spire MoGas's existing interstate natural gas operations.
  • The merger is expected to increase administrative efficiencies and streamline transactions for customers.
  • The Spire STL facilities will be treated as a new rate zone on the Spire MoGas system.
  • The merger will not have any significant impact on the environment, landowners, or customers.
  • The proposed merger is expected to enhance customers' market flexibility and access to natural gas supplies.
  • No construction or modification of facilities will be involved in the proposed merger.

Sources:

  • Federal Energy Regulatory Commission Office of Energy Projects, Division of Gas-Environment & Engineering Environmental Assessment Report, CP25-513-000, July 22, 2025.
  • Federal Energy Regulatory Commission Office of Energy Projects, Division of Gas-Environment & Engineering Environmental Impact Statement, CP25-513-000, July 22, 2025.

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