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Wallerawang Power Station began operation in 1957 and played an important part in the development of the western coalfields of New South Wales and the provision of power for the western rail electrification. In March 2007, a special plaque was unveiled and other celebrations were held to commemorate its 50 years of operation.
The power station has a total capacity of 1,000 megawatts provided by two generating units of 500 megawatts capacity.
Wallerawang uses a system of cooling towers with makeup water supplied from dams built as water storage systems. Its concrete cooling tower uses natural draught circulation by drawing cold air in at the base. Hot water is cooled mainly by evaporation.
Two dams on the Coxs River, which runs through the power station area, supply water needed for cooling. Lake Wallace and Thompson's Creek dam (which mainly supplies Mount Piper Power Station 10 kilometres away) can be topped up in dry periods by water pumped from Lake Lyell and from water sourced from mine dewatering projects.
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