Elon Musk launches 100-day challenge to build the biggest battery in the world

Elon Musk's had a busy day.

After announcing his goal to get to Mars by 2022 at the International Astronautical Conference in Adelaide, Australia on Friday, the Tesla founder headed three hours into the South Australian countryside to launch the building of the world’s largest lithium-ion battery installation — and he's about half done.

Attempting to alleviate some of the state’s severe energy issues, Musk now has 100 days to build a Powerpack system with 100 megawatts of capacity, a now famous bet derived from light Tesla bragging and Twitter banter in March.  Read more...