Exhibit 21
SUBSIDIARIES OF NISOURCE
as of December 31, 2023
Segment/Subsidiary GAS DISTRIBUTION OPERATIONS | State of Incorporation | ||||
Bay State Gas Company d/b/a Columbia Gas of Massachusetts | Massachusetts | ||||
Columbia Gas of Kentucky, Inc. | Kentucky | ||||
Columbia Gas of Maryland, Inc. | Delaware | ||||
Columbia Gas of Ohio, Inc. | Ohio | ||||
Columbia Gas of Pennsylvania, Inc. | Pennsylvania | ||||
Columbia Gas of Virginia, Inc. | Virginia | ||||
NiSource Gas Distribution Group, Inc. | Delaware | ||||
ELECTRIC OPERATIONS | |||||
Northern Indiana Public Service Company LLC* | Indiana | ||||
RoseWater Wind Generation LLC | Indiana | ||||
RoseWater Wind Farm LLC | Delaware | ||||
Indiana Crossroads Wind Generation LLC | Indiana | ||||
Indiana Crossroads Wind Farm LLC | Delaware | ||||
Dunn's Bridge I Solar Generation LLC | Delaware | ||||
Dunn's Bridge II Solar Generation LLC | Delaware | ||||
Cavalry Solar Generation LLC | Delaware | ||||
Elliot Solar Generation LLC | Delaware | ||||
Fairbanks Solar Generation LLC | Delaware | ||||
Indiana Crossroads Solar Generation LLC | Delaware | ||||
Meadow Lake Solar Park LLC | Delaware | ||||
Dunns Bridge Solar Center, LLC | Delaware | ||||
Gibson Solar Generation LLC | Delaware | ||||
CORPORATE AND OTHER OPERATIONS | |||||
Columbia Gas of Ohio Receivables Corporation | Delaware | ||||
Columbia Gas of Pennsylvania Receivables Corporation | Delaware | ||||
NIPSCO Accounts Receivable Corporation | Indiana | ||||
NiSource Corporate Group, LLC | Delaware | ||||
NiSource Corporate Services Company | Delaware | ||||
NiSource Development Company, Inc. | Indiana | ||||
NiSource Energy Technologies, Inc. | Indiana | ||||
NiSource Insurance Corporation, Inc. | Utah | ||||
Lake Erie Land Company | Indiana | ||||
EnergyUSA-TPC, Inc. | Indiana (Inactive) | ||||
NIPSCO Holdings I LLC | Delaware | ||||
NIPSCO Holdings II LLC | Delaware |
* Reported under Gas Distribution Operations and Electric Operations.