Merrillville, Indiana United States
NiSource, Inc. is a company that transmits, stores, and distributes energy to clients across the country. Based in Merrillville, Indiana, it provides electric generation and natural gas to 3.8 million customers from the Gulf Coast to New England. Companies associated with NiSource include Energy USA TPC and the Northern Indiana Public Service Company, NIPSCO. In 2000, NiSource acquired Columbia Gas, which serves Ohio, Kentucky, Maryland, West Virginia, and Pennsylvania.