NiSource NI

EnergyMarket cap $12B1 connection

NiSource operates regulated natural gas and electric utilities across 6 US states serving 4M+ customers. Its Columbia Gas subsidiary is the largest natural gas distribution network in Ohio. Following the Merrimack Valley gas explosion, NiSource has invested heavily in pipe replacement and safety systems.

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Competitors 1

Companies it competes with

American Electric PowerEnergy · $46BGas distribution overlap

Other Energy companies

Saudi Aramco ExxonMobil Chevron Shell plc NextEra Energy ConocoPhillips TotalEnergies BP plc Duke Energy Constellation Energy

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Relationships are compiled by VexMap from company filings, announcements and reporting, and last reviewed September 2026. Spotted something wrong? Tell us. Not investment advice.