Tesla wins giant battery contract in Australia, has 100-day deadline

Tesla has won an Australian contract to install the world’s biggest grid-scale battery, in what experts say will be a litmus test for the reliability of large-scale renewable energy. Tesla’s CEO Elon Musk, known for his bold approach to cars, clean energy and space exploration, trumped dozens of competing proposals to build the gigantic lithium-ion battery that will serve as emergency back-up power for South Australia – a state racked by outages.