Expansion Projects

Originating in Conway, Kansas, the Bluestem Pipeline has been designed to transport 120,000 barrels-per-day (bpd) of natural gas liquids (NGLs), expandable to 225,000 (bpd).

Approved by the Federal Energy Regulatory Commission in December 2014, the Constitution Pipeline is a new 30-inch, approximately 125-mile pipeline with a capacity to transport 650,000 dekatherms of natural gas per day.

The Gateway Expansion Project has been designed to provide up to 65,000 dekatherms per day of natural gas transportation service to northeastern consumers.

The Hillabee Expansion Project is an expansion of the existing Transco pipeline’s capacity in Alabama to supply natural gas to the Sabal Trail pipeline.

Northwest Innovation Works (NWIW) and Williams’ Northwest Pipeline have signed a pre-construction agreement for Northwest to construct a three-mile, 24-inch diameter natural gas pipeline and related facilities.

The Leidy South Project is a proposed expansion of Williams’ existing Pennsylvania energy infrastructure designed to connect robust supplies of natural gas in northern and western Pennsylvania with growing demand centers along the Atlantic Seaboard.

Northwest Pipeline LLC (Northwest) is one of three interstate natural gas pipelines operated by The Williams Companies.

The Northeast Supply Enhancement Project addresses serious natural gas supply constraints affecting New York City and Long Island by providing 400,000 dekatherms per day of additional natural gas supply to National Grid.

The Southeastern Trail Expansion (SET) is an expansion of the Transco pipeline system designed to provide additional pipeline capacity to serve markets in the Mid-Atlantic and Southeastern states by November 2020.