The investment is US$7bn.The Camisea project comprises Peru's largest gas fields, with 11.2tn cubic feet in reserves. It involves three different phases, of which the first is exploration, to be carried out by Pluspetrol in blocks 56 and 88 and in the San Martin and Cashiriari fields. The second stage is transportation, to be carried out by Transportadora de Gas del Perú (TGP), and involves the construction of a 714km natural gas pipeline and a 540km pipeline for liquids. The third phase for distribution will be carried out by Cálidda and involves the delivery of energy to Lima and Callao. Camisea will benefit the energy industry in Peru, as well as helping the environment by reducing levels of greenhouse gas emissions. A total of US$6.3bn has been invested since the Camisea project began in 2004. The companies involved in the project are: Pluspetrol (27.2%), the owner of the deposit, Hunt Oil (25.2%), SK Energy (17.6%), Tecpetrol (10%) and Repsol (10%). TGP is controlled by Colombia's Empresa de Energía de Bogotá (23.6%), Spain's Enagas (22.38%), Algeria's Sonatrach (21.18%), Korea's SK Corp (11.19%), the Canada Pension Plan Investment Board (10.4%), GDF Suez (8.06%), local construction company Graña y Montero (1.67%) and the IFC (1.51%). The capacity of a third pipeline is being expanded to 850Mpc/d by TGP and is expected to be completed in the first quarter of 2015. Block 88 is also being expanded at a cost of US$480mn, which includes 2D and 3D seismic, exploration and injection wells and a natural gas transport line. This expansion is expected to start during 2014.