Natural Gas Pipeline Company of America LLC and Horizon Pipeline Company, L.L.C. filed a joint application with the Federal Energy Regulatory Commission on August 12, 2026, for a project estimated to cost $438,467,975. The North Extension Project would let Natural Gas Pipeline Company of America, known in the filing as Natural, deliver 185,000 dekatherms a day of new firm transportation service to meet growing demand from Wisconsin Electric Power Company in southern Wisconsin.

What the project includes

  • A new 11,107 horsepower compressor station, CS 119, in Lake County, Illinois
  • A new 31,900 horsepower compression unit and the re-wheeling of an existing compressor unit at CS 312 in Livingston County, Illinois
  • A new 11,107 horsepower compressor unit at CS 113 in Will County, Illinois
  • About 11.5 miles of new pipeline lateral running from Lake County, Illinois to Kenosha County, Wisconsin
  • A new meter station at the end of that lateral, along with other appurtenant facilities

Natural is also asking to lease the capacity the project would create on the interstate system run by Horizon. Horizon filed its own related request to lease that capacity to Natural. Natural proposes an incremental recourse rate under its Rate Schedule FTS for firm transportation service on the new facilities. Kinder Morgan, Inc. is listed in the filing as Natural's operator, and questions about the application go through the company's regulatory affairs director, Francisco Tarin.

Regulatory process

Natural and Horizon said the project needs a water quality certificate under the Clean Water Act from the Illinois Environmental Protection Agency and the Wisconsin Department of Natural Resources. Within 90 days of the notice, FERC staff will either complete an environmental review or issue a notice setting a schedule for that review. Anyone seeking to intervene in the proceeding has until 5 p.m. Eastern time on September 9, 2026, to file a motion; comments and protests are also open to the public.

We reported last month that Phillips 66, Kinder Morgan and HF Sinclair sanctioned a $5 billion pipeline.