Australia, Sept. 23 -- RWE Renewables Australia has achieved a major milestone in Australia's energy transition with the successful registration of the country's first eight-hour Battery Energy Storage System (BESS), located at the Limondale Solar Farm near Balranald in New South Wales.The Limondale BESS, comprising 144 Tesla Megapacks, has a capacity of over 50 megawatts (MW) and 400 megawatt-hours (MWh), making it the longest-duration gridscale battery operating in the country.This milestone marks the transition from construction into hold point testing, with the system expected to be fully commissioned by the end of this year.The project was the first recipient of a Long-Term Energy Service Agreement (LTESA) under New South Wales' Long D...