Elon Musk has finished building the world's biggest battery in less than 100 days

Elon Musk looks to have delivered on his promise to build the biggest lithium ion battery in the world in an effort to help South Australia with its crippling energy problems. “100 days from contract signature or it’s free,” Musk tweeted at the time, in a deal initially negotiated over Twitter. Musk is well ahead of schedule (a rarity for Tesla!), with the 100MW battery set to be energised and tested in the coming days, according to a press release from the local state government.
Read more: https://www.theverge.com/2017/11/23/16693848/elon-musk-worlds-biggest-battery-100-days?source=Snapzu