NiSource Inc. (NI) Stock Analysis

NiSource Inc. is a Merrillville, Indiana-based utility holding company operating in the regulated gas and electric space. The business splits into two core segments: Columbia Operations and NIPSCO Operations. On the gas side, it delivers fuel to residential, commercial, and industrial buyers across Ohio, Pennsylvania, Virginia, Kentucky, and Maryland through roughly 37,300 miles of distribution main pipelines and 310 miles of transmission lines. On the electric side, it generates, transmits, and distributes power to approximately 0.5 million customers across northern Indiana while handling wholesale transactions.

As a regulated utility, NiSource operates with a protected regional footprint rather than fighting open-market competitors for customers. That massive 37,300-mile pipeline network and a locked-in base of 0.5 million electric users generate steady, defensive cash flows that insulate the business. The primary risk comes from maintaining heavy, capital-intensive legacy infrastructure, including coal-fired plants in Wheatfield and Michigan City under strict regulatory rules. Even so, guaranteed regulated returns give NiSource stability that non-regulated power producers simply cannot match.

The company, which was founded in 1847 and took the NiSource name in April 1999, is actively overhauling its power generation mix. While it still runs steam coal stations, a combined cycle gas turbine in West Terre Haute, and gas units in Wheatfield, it is steadily expanding cleaner capacity. That footprint now includes hydro plants in Carroll and White counties, wind generation in White County, and solar facilities across Sullivan, Gibson, Jasper, and White counties. NiSource is executing a capital-heavy transition from legacy coal toward a diversified generation fleet.