The Macarthur Wind Farm is a wind farm located in Macarthur, Victoria, Australia, near Hamilton, 260 km west of Melbourne. It is on a 5,500 ha site which has an installed capacity of 420 megawatts (MW). Based on a capacity factor of around 35%, it is estimated that the long-term average generation will be approximately 1,250 GWh per year. The energy produced annually by a wind farm varies year-to-year, and during FY2015 the farm produced 977.9 GWh.
It is the largest wind farm in the southern hemisphere generating enough power for 220,000 homes and abating 1.7 million tons of greenhouse gases annually, at a capacity factor of 35%. The wind farm comprises 140 Vestas V112-3.0MW wind turbines manufactured in Denmark.The project cost about A$1 billion and was fully operational in January 2013. It was constructed by Vestas and Leighton Contractors. The first turbines were connected to the grid in September 2012. AGL also invested an additional $27m in the substation, which is completely owned by the company.