NiSource is an energy holding company whose subsidiaries distribute natural gas and electricity to more than 3.8 million customers located within a corridor that runs from the Gulf Coast through the Midwest to New England. The company owns and operates 15,000 miles of natural gas transmission pipeline and one of the nation's largest underground natural gas storage systems. Northern Indiana Public Service Company, or NIPSCO, NiSource's wholly owned electric and gas utility, owns coal, natural gas, and hydroelectric power plants. | 
