AGL Resources Inc., the United States based company, is an energy services holding company that conducts most of its operations through its subsidiaries. The Company distributes natural gas to residential, commercial, industrial, and governmental customers through its natural gas distribution utilities. The Company operates through five operating segments: distribution operations, retail operations, wholesale services, midstream operations, cargo shipping and others. Other non-utility businesses include asset management for natural gas wholesale customers through Sequent Energy Management and ownership and operation of natural gas storage facilities. In 2011, the Company completed its merger with Nicor Inc.