In the export business of power generation plants, mainly full turnkey contracts dominate in which all aspects of work from planning, design, manufacture, procurement, construction, trial operation, and delivery of the plant to the customer are covered. Mitsubishi Heavy Industries, Ltd. (MHI) have received orders for five combined-cycle power plants using the latest M501F gas turbines, to be installed at five different sites in Mexico to cater the rapidly increasing demand for electric power. Two of the five plants have been completed and delivered to the customer as scheduled. In both the plants, up-rated M501F gas turbines with higher performance levels than conventional one have been adopted for the first time. Both the plants are currently operating at higher efficiency and reliability, thus meeting the ultimate requirement of the customer.