AGL Energy is set to commission a new 500 MW, 1000 MWh battery at the site of a shuttered coal plant in New South Wales by mid-year, with support from federal and NSW governments. The Liddell battery will help firm up the state's grid as more coal exits and renewable energy comes online, part of a trend of transforming coal generation sites into battery storage hubs in NSW. This transition reflects the need to move away from aging coal-fired power stations, with the aim of supporting reliable renewable energy for years to come. The milestone at Liddell coincides with a new policy from the Minns government regarding coal mining, highlighting the shift towards sustainable energy solutions.