EXHIBIT 21.1 VECTREN UTILITY HOLDINGS, INC. Subsidiaries Wholly Owned Subsidiaries: State of Incorporation/ Doing Business As Name of Entity Jurisdiction - -------------------------------------- ----------------------- --------------------------- |X| Southern Indiana Gas and Electric Indiana Vectren Energy Delivery of Company, Inc. Indiana, Inc. |X| Indiana Gas Company, Inc. Indiana, Ohio Vectren Energy Delivery of Indiana, Inc. |X| Vectren Energy Delivery of Ohio, Ohio Inc.