Business Management
Ndc Douglas Properties
801 East 86th Avenue Merrillville, IN 46410
(219) 647-5990 nisource.com
Gas Transmission Companies
Ni Energy Services Inc
801 East 86th Avenue Merrillville, IN 46410
Ni Source Capital Markets Inc
801 East 86th Avenue Merrillville, IN 46410
(219) 647-5990 nisource.com
Electric Companies
Ni Source Energy Technologies
801 East 86th Avenue Merrillville, IN 46410
(219) 647-5990 nisource.com
Ni Source Finance
801 East 86th Avenue Merrillville, IN 46410
(219) 647-5990 nisource.com
Gas and Other Services-Combined
Ni Source Inc
801 East 86th Avenue Merrillville, IN 46410
(219) 647-5990 nisource.com