GMR Infrastructure Limited (GIL) is a holding company. The Company, through its subsidiaries, associates and joint ventures are engaged in generation of power, development of expressways, airport infrastructure facilities and special economic zones. It has four segments: power, roads, airport infrastructure and others. The airport business of the Company consists of Hyderabad airport, Delhi airport and Istanbul airport. Commercial operation commenced for the Hyderabad airport in March 2008. The Company has three operational power plants, namely the 220 megawatt gross-capacity, naphtha-fired combined cycle Mangalore power plant in Mangalore in the state of Karnataka, the 200 megawatt contracted capacity LSHS-fired Chennai power plant in Chennai in the state of Tamil Nadu and the 388.5 megawatt gross-capacity gasfired combined cycle Vemagiri power plant in Vemagiri in the state of Andhra Pradesh. GIL commenced the construction business as a separate operating division on April 1, 2009.