Alliance Pipeline is seeking commitments to expand its pipeline system, which runs through North Dakota, by 25 percent.
The expansion would require three more compressor stations in North Dakota and expects to put the expanded pipeline into service by the end of 2021.
The proposed expansion comes as North Dakota oil and gas regulators are encouraging an increase in infrastructure investment due to rising volumes of natural gas production.
The expansion, which would also include developing more gathering pipelines and processing plants, would help to reduce natural gas flaring, said Justin Kringstad, director of the North Dakota Pipeline Authority.
The Alliance Pipeline is a natural gas transmission system that runs 2,391 miles from the Western Canadian Sedimentary Basin and Williston Basin to the Chicago market hub, with 967 miles existing in the U.S.
Alliance Pipeline is owned by affiliates of Enbridge and Pembina Pipeline Corp.