FERC Issues Notice of Schedule for Environmental Assessment of Kemmerer Horsepower Replacement Project

Strategic Insights -

The Federal Energy Regulatory Commission (FERC) has issued a formal notice outlining the schedule for the preparation of an environmental assessment (EA) for the Kemmerer Horsepower Replacement Project. The project involves the replacement of four legacy reciprocating engine compressors and one gas turbine with a new natural gas-fired turbine-driven compressor in Lincoln County, Wyoming. The proposed project is part of Northwest Pipeline LLC's Modernization and Emissions Reduction Program, aiming to improve system reliability and reduce emissions. The EA is expected to be issued on October 9, 2025, with a 90-day federal authorization decision deadline set for January 7, 2026.

Key Takeaways:

  • The Kemmerer Horsepower Replacement Project involves the replacement of four legacy reciprocating engine compressors and one gas turbine with a new natural gas-fired turbine-driven compressor.
  • The project aims to improve system reliability and reduce emissions as part of Northwest Pipeline LLC's Modernization and Emissions Reduction Program.
  • The Federal Energy Regulatory Commission (FERC) has issued a formal notice outlining the schedule for the preparation of an environmental assessment (EA) for the project.
  • The EA is expected to be issued on October 9, 2025, with a 90-day federal authorization decision deadline set for January 7, 2026.
  • The project is part of a larger effort to modernize and improve infrastructure in the natural gas sector.
  • Northwest Pipeline LLC is responsible for ensuring compliance with environmental regulations and obtaining necessary permits and approvals.
  • The Federal Energy Regulatory Commission (FERC) offers a free service called eSubscription to provide automatic notification of filings made to subscribed dockets.
  • The Commission's Office of Public Participation (OPP) supports meaningful public engagement and participation in Commission proceedings.

Statistics:

  • October 9, 2025: ETA for the issuance of the environmental assessment (EA)
  • January 7, 2026: 90-day federal authorization decision deadline
  • 4: Number of legacy reciprocating engine compressors to be replaced
  • 1: Number of gas turbines to be replaced
  • 13,220: ISO-rated horsepower of the new gas-fired turbine
  • 80: Acres of land to be affected by the project
  • 90: Number of days allotted for federal agencies to complete necessary reviews and issue final decisions

Sources:

  • NW-2025-001: Notice of Schedule for the Preparation of an Environmental Assessment for the Kemmerer Horsepower Replacement Project (June 27, 2025)
  • Federal Register: 18 CFR § 157.22(a)
  • Federal Energy Regulatory Commission: eSubscription (www.ferc.gov/ferc-online/overview)
  • Federal Energy Regulatory Commission: Office of Public Participation (OPP) (202) 502-6595 or OPP@ferc.gov