TagEnergy said it was buoyed by the federal government's capacity investment scheme (CIS), the national framework for encouraging investment in clean energy projects. Golden Plains, the largest wind farm in the southern hemisphere, "materially improves Victoria's energy security, puts downward pressure on electricity costs and dramatically reduces carbon pollution", TagEnergy's Australia managing partner Andrew Riggs said. "The supportive policy landscape created by the CIS has given us confidence to start construction of Golden Plains stage two now," he said. An engineering, procurement and construction contract has been signed with global turbine supplier Vestas, AusNet Services has been appointed for grid connection works, and WestWind Energy as the asset manager.