South Australia is set to become the host of the world’s biggest battery equipped with the ability to support an all-renewables electrical grid. Australia’s energy retailer kingpin, AGL, has announced Finnish manufacturer Wärtsilä will be heading the construction of its new $180 million (US$130 million), 250 megawatt (MW) grid battery—the first of a planned 850 MW national battery roll-out. The battery will be built right beside South Australia’s largest power station—AGL’s 1,040 MW gas-fired plant on Torrens Island in Adelaide, which is currently undergoing a gradual retirement as the ageing system becomes uneconomical to keep afloat. “Torrens Island has played an important role in the state’s energy generation for many decades, and our plans ensure the site’s legacy continues with smart and sustainable technologies,” AGL Chief Operating Officer, Markus Brokhof, said in a media release. The battery will also have a storage capacity of 250 megawatt-hours (MWh), meaning the station …