AEP is NiSource's top competitor. AEP is a Public company that was founded in Columbus, Ohio in 1906. AEP operates in the Electric, Water & Gas Utilities industry. AEP has 9,880 more employees vs. NiSource.
FirstEnergy has been one of NiSource's top competitors. FirstEnergy is headquartered in Akron, Ohio, and was founded in 1997. FirstEnergy is in the Electric, Water & Gas Utilities field. FirstEnergy generates 246% the revenue of NiSource.
Constellation NewEnergy is perceived as one of NiSource's biggest rivals. Constellation NewEnergy was founded in 1999 in Baltimore, Maryland. Constellation NewEnergy competes in the Electric, Water & Gas Utilities field. Constellation NewEnergy generates $18.1B more revenue than NiSource.