Portland Natural Gas Transmission System

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Portland Natural Gas Transmission System (PNGTS) is a 295-mile interstate natural gas pipeline system that originates at the terminus of TC Energy’s TQM pipeline at the Canadian border. The system shares facilities with the Maritimes and Northeast Pipeline from Westbrook, ME to Dracut, MA where it ultimately connects with the Tennessee Gas Pipeline System.

It began serving New England’s growing energy needs in March 1999.

PNGTS has a design capacity of 168 million cubic feet per day (MMcf/d) at the Canadian border which increases to 250 MMcf/d from Westbrook, ME to Dracut, MA. 

PNGTS is operated by a subsidiary of TC Energy Corporation. TC PipeLines, LP owns 61.7 percent of PNGTS. The remaining 38.3 percent is owned by a subsidiary of Gaz Métro.

Quick Asset Facts:

  • Commenced Operations: 1999
  • Originates Near: Pittsburg, NH
  • Terminates Near: Dracut, MA
  • Length (miles): 295
  • Number of Compressor Stations: 0
  • Number of Active Physical Receipt / Delivery Points: 5/22
  • Installed Horsepower: N/A
  • Design Capacity (MMcf/d): 250


Ownership Structure

Tuscarora Conference

TC Energy Corporation

In the field

Our general partner, TC PipeLines GP, Inc., is wholly-owned by TC Energy Corporation (TC Energy), one of the largest energy infrastructure companies in North America