Union Gas Limited is a major Canadian natural gas storage, transmission and distribution company based in Ontario with nearly 100 years of experience and service to customers. The distribution business serves 1.3 million residential, commercial and industrial customers in more than 400 communities across northern, southwestern and eastern Ontario. Union Gas's growing storage and transmission business offers premium storage and transportation services to customers at the Dawn Hub, the largest underground storage facility in Canada and one of the largest in North America. It offers customers an important link in the movement of natural gas from Western Canadian and U.S. supply basins to markets in central Canada and the northeast U.S. A Spectra Energy company, Union Gas has assets of $4 billion and employs about 2,200 employees.