Northwest Gas Pipeline

This article is part of the Global Fossil Infrastructure Tracker, a project of Global Energy Monitor and the Center for Media and Democracy.

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Northwest Gas Pipeline is a natural gas pipeline in the northwestern United States.

Location

The pipeline runs bidirectionally from Sumas, Washington, to La Plata County, Colorado.

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Project Details

• Operator: Williams Companies
• Current capacity: 3700 million cubic feet per day
• Length: 4000 miles / 6437 km
• Status: Operating
• Start Year: 1965

Background

The Northwest Pipeline system is a primary artery for the transmission of natural gas to the Pacific Northwest and Intermountain Region. It began as a 1,500-mile pipeline and has since expanded into a 4,000-mile bi-directional transmission system crossing the states of Washington, Oregon, Idaho, Wyoming, Utah and Colorado. Northwest’s bi-directional system provides access to British Columbia, Alberta, Rocky Mountain and San Juan Basin gas supplies. There are several expansion projects currently planned, including into Mollala and Jordan Cove, Oregon, and Plymouth, Washington. As of 2017, there is also a lateral expansion planned into Seattle, Washington.