Exhibit 21
SUBSIDIARIES OF NISOURCE
as of December 31, 2007
Segment/Subsidiary | State of Incorporation | |
GAS DISTRIBUTION OPERATIONS | ||
Bay State Gas Company | 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 | |
Kokomo Gas and Fuel Company | Indiana | |
Northern Indiana Fuel and Light Company, Inc. | Indiana | |
Northern Utilities, Inc. | New Hampshire | |
Northern Indiana Public Service Company* | Indiana | |
NiSource Retail Services, Inc. | Delaware | |
ELECTRIC OPERATIONS | ||
Northern Indiana Public Service Company* | Indiana | |
GAS TRANSMISSION AND STORAGE OPERATIONS | ||
Columbia Gas Transmission Corporation | Delaware | |
Columbia Gulf Transmission Company | Delaware | |
Crossroads Pipeline Company | Indiana |
Segment/Subsidiary | State of Incorporation | |
Granite State Gas Transmission, Inc. | New Hampshire | |
OTHER OPERATIONS | ||
NiSource Energy Technologies, Inc. | Indiana | |
NiSource Development Company, Inc. | Indiana | |
Columbia Energy Services Corporation | Kentucky | |
EnergyUSA, Inc. | Indiana | |
EnergyUSA-TPC Corp. | Indiana | |
PEI Holdings, Inc. | Indiana | |
DISCONTINUED OPERATIONS | ||
IWC Resources Corporation | Indiana | |
CORPORATE | ||
Columbia Energy Group | Delaware | |
NiSource Finance Corp. | Indiana | |
NiSource Capital Markets, Inc. | Indiana | |
NiSource Corporate Services Company | Delaware | |
NiSource Insurance Corporation, Limited | Bermuda |
* | Reported under Gas Distribution Operations and Electric Operations. |
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