http://www.abc.net.au/news/2017-07-07/sa-to-get-worlds-biggest-li...

http://www.abc.net.au/news/2017-07-07/sa-to-get-worlds-biggest-lithium-ion-battery/8687268

South Australia teams with Tesla, Neoen to build world's biggest lithium ion battery in bid to secure power

Good news for Cobalt!

http://fortune.com/2015/05/18/tesla-grid-batteries-chemistry/

"In contrast, Musk said that Tesla will use a lithium-ion battery with a nickel, manganese, cobalt oxide cathode for its grid battery. Called an NMC battery, it's meant to be used for daily cycling for a home, business, or certain types of clean power. "There's quite a lot of manganese in there," Musk said. (The Tesla website specs for this battery are 7 kWh battery for $3,000.)"