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Gas Transmission Northwest System

Gas Transmission Northwest (GTN) is a 1,353 mile interstate natural gas pipeline system that transports Western Canadian Sedimentary Basin and Rocky Mountain-sourced natural gas to third-party natural gas pipelines and markets in Washington, Oregon, and California.  GTN has an average design capacity of 2,900 million cubic feet per day (MMcf/d).  GTN is also connected to the Tuscarora pipeline system, which is wholly-owned by TC PipeLines, LP.  Some of the GTN pipeline system's capacity is subject to annual renewals, however greater than 50 percent of the capacity is under long-term contracts, the majority of which mature between 2023 and 2028.  GTN is operated by a subsidiary of TransCanada Corporation. TC PipeLines, LP owns 100 percent of GTN. 

 Quick Asset Facts:

  • Commenced Operations: 1961
  • Originates Near: Kingsgate, British Columbia, Canada
  • Terminates Near: Malin, OR
  • Length (miles): 1,353
  • Number of Compressor Stations: 12
  • Number of Active Physical Receipt / Delivery Points: 3 / 55
  • Installed Horsepower: 515,000
  • Design Capacity (MMcf/d): 2,900