NiSource Inc. is a diversified energy holding company based in the United States, operating primarily in the utility and natural gas sectors. The company was initially established in 1912 as the Northern Indiana Public Service Company (NIPSCO) and was subsequently renamed NiSource in 1999. The corporate headquarters are located in Merrillville, Indiana.
The leadership team of NiSource is under the lead of CEO Joseph Hamrock.
NiSource operates through two primary business segments: