QESHM Combined Cycle Power Plant is located in the QESHM Island of Iran. The project includes one combined cycle block with the capacity of 500 MW and desalination water plant which will be implemented in 2 phases. In the first phase design of combined block will be implemented. The type of two gas turbine units is V94.2 each with the capacity of 170 MW and one steam unit with the capacity of 160 MW. The required fuel of the plant includes natural gas and gasoline which natural gas is considered as the main and gasoline as the alternative fuel. Also the cooling system is once through type. In this project, Monenco Iran is responsible to render basic and detail design for buildings, yard area civil works, electrical installations, mechanical and instrumentation works of QESHM power plant.