Mitsubishi Heavy Industries, Ltd. (MHI) has received an order for two sets of gas turbines and generators (GTG) from North American energy infrastructure company TransCanada. The GTG sets on order will be core components of TransCanada's 900 megawatt (MW) gas turbine combined cycle (GTCC) power generation plant - the Oakville Generating Station (OGS) - to be built in Ontario. OGS is planned to be in-service by the end of 2013 and supplying electricity to the Ontario Power Authority (OPA).

As part of numerous measures taken to reduce greenhouse gas emissions and fight climate change, Ontario is set to eliminate coal-fired generation by the end of 2014. In line with this Ontario initiative, the OPA has been conducting a program to increase natural gas-fired GTCC power generation, replacing existing coal-fired plants.

MHI will provide two M501GAC gas turbines and Mitsubishi Electric Corporation will supply two generators. The M501GAC gas turbine is an advanced model that adopts air-cooling to cool the combustor instead of the existing steam-cooling method.

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