NiSource Inc., an energy holding company, operates as a regulated natural gas and electric utility company in the United States. The company operates in two segments, Gas Distribution Operations and Electric Operations. It provides natural gas service and transportation to residential, commercial, and industrial customers; generates, transmits, and distributes electricity; and offers wholesale and transmission transaction services. The company serves approximately 3.5 million natural gas customers and 469,000 electricity customers in Ohio, Pennsylvania, Virginia, Kentucky, Maryland, Indiana, and Massachusetts. It also owns and operates three coal-fired electric generating stations with a net capability of 2,540 megawatts (MW), three gas-fired generating units with a net capability of 196 MW, and two hydroelectric generating plants with a net capability of 10 MW, as well as a combined cycle gas turbine plant with a net capability of 535 MW. The company was formerly known as NIPSCO Industries, Inc. and changed its name to NiSource Inc. in April 1999. NiSource Inc. was founded in 1912 and is headquartered in Merrillville, Indiana.
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