With interests in approximately 6,300 miles of FERC regulated, interstate natural gas pipelines and a combined total deliverable capacity of 9.4 billion cubic feet per day (bcf/d), our assets are essential infrastructure that supply approximately 13 percent of the average daily U.S. natural gas demand and are well interconnected to the key markets they serve.

TC PipeLines, LP owns or has ownership interests in the following assets:




Bison 303 miles 100 percent
North Baja 86 miles 100 percent
Tuscarora 305 miles 100 percent
GTN 1,377 miles 100 percent
Northern Border 1,412 miles 50 percent
Great Lakes 2,115 miles 46.45 percent
PNGTS 295 miles 61.7 percent
Iroquois 416 miles 49.3 percent

Download a large version of the TC PipeLines, LP Asset Map (PDF, 1.07 MB).

TC PipeLines, LP asset map

Visit to learn more about all of TransCanada’s natural gas pipelines and storage in North America, or download the TransCanada asset map (PDF, 3.55 MB).