Contact Energy Limited is a diversified and integrated energy company, focusing on the wholesale generation of electricity and the retail sale of electricity, natural gas and liquefied petroleum gas (LPG), and related services in New Zealand. The Company operates in two segments: Retail and Generation. The Retail segment encompasses any activity that is associated with Contact's supply of energy to end user customers as well as related services. The Generation segment encompasses any activity that is associated with Contact's generation of electricity or steam and Contact's sales to the wholesale electricity market. It also includes all activities in relation to the gas storage facility at the Ahuroa reservoir. On April 30, 2007, the Company acquired Rockgas Holdings Limited and its subsidiary, Rockgas Limited. On June 12, 2008, Contact acquired the exclusive beneficial right to use the Ahuroa reservoir in order to develop an underground gas storage facility field.