Northwest Pipeline

The Northwest Pipeline system has changed significantly since its beginnings nearly 60 years ago. Like the Western states it serves, Northwest’s transmission system has expanded to meet the demands of growth.

Today the pipeline is a primary artery for the transmission of natural gas to the Pacific Northwest and Intermountain Region. What began as a 1,500-mile pipeline is now 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.

System Peak Design Capacity 3.8 million dekatherms per day
Seasonal Storage 14 million dekatherms of capacity
Supply Areas Rocky Mountain, Canada and San Juan
Market Areas Western United States
Miles of Transmission Pipeline 3,900 miles of pipeline
Compressor Stations 41
24-Hour Emergency Contact 800-972-7733



295 Chipeta Way
Salt Lake City, UT 84108
Phone:   801-583-8800
Emergency:   800-972-7733