When an apocalyptic storm hit South Australia in September of 2016, the regional electricity grid failed and left 1.7 million residents in the darkness. Then the Australian Prime Minister Malcom Turnbull tried to blame the state’s recent turn toward renewable energy, prompting Elon Musk to make an unbelievable bet that Tesla could build the world’s biggest battery in 100 days. See here how Tesla did it in 60.