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Great Lakes Gas Transmission System

The Great Lakes Gas Transmission (GLGT) pipeline provides a direct and effective link between natural gas supply in the Western Canada Sedimentary Basin and major markets in Minnesota, Wisconsin, Michigan and central Canada.

The Great Lakes system is 3,404 km (2,115 mi) in length, connecting to the Canadian Mainline at the Manitoba-North Dakota border and continuing to Michigan and the Dawn hub.

The GLGT system is part of TransCanada's network of 57,000 km (35,500 mi.) of wholly owned and 11,500 km (7,000 mi.) of partially owned natural gas pipelines connecting major supply basins with major markets all across North America. TransCanada is one of the continent's largest providers of gas storage and related services with approximately 380 Bcf of storage capacity - that's the second largest in North America. In total, TransCanada delivers approximately 20 per cent of the natural gas consumed in North America each day.

TransCanada fully operates and effectively owns 69 per cent of the system through its direct ownership interest and its 33.3 per cent interest in TC PipeLines, LP.