While most coverage of AGL Energy’s plan to install the largest energy storage facilities in Australia, the company sits as both villain and hero, in that it is one of Australia’s largest polluters at present, but its renewables interests are considerable. It sits poised between success and failure, and the arrival of new CEO Brett Redman in 2018 has perhaps tipped the scales away from villain. But the big battery is, in and of itself, big news. Redman revealed at his results conference this week that he wants AGL Energy to have 850 MW of battery energy storage, by fiscal year 2024. And he talked up plans for a single 500 MW installation where the Liddell coal fired power station…