Great Lakes Gas Transmission transports great amounts of natural gas -- 2.2 billion cu. ft. per day, to be exact. With a pipeline spanning 2,100 miles, the company supplies gas to major urban markets in Michigan, Minnesota, Wisconsin, and parts of southern Canada. Its customers include a number of regional natural gas transporters, local gas distributors, and energy trading firms including Alliance Energy Services, ANR Pipeline, Michigan Consolidated Gas, Northern States Power, and Sempra Energy Trading. Great Lakes Gas Transmission was founded in 1967 and is controlled by TransCanada Corp.