Tesla to build 100MW South Aust battery

WHAT ELON MUSK IS PLANNING IN SOUTH AUSTRALIA:

* Billionaire Elon Musk's Tesla company will build the world's largest battery storage facility in South Australia

* The 100-megawatt lithium ion battery will be more than three times the size of the world's current largest storage facility which is 30 megawatt.

* It will be built near Jamestown in SA's mid-north and is expected to be operational in time for this summer.

* It will be paired to the existing Hornsdale wind farm operated by French renewable energy company Neoen.

* Musk says he wants the battery to "look nice" and become a tourist drawcard.

* It could have a life of more than 30 years, but will require upgrades during that time.

* Musk has promised to deliver the battery within 100 days from official approval or it will be supplied free.

* The battery will store renewable energy generated by the wind farm with a view to stabilising the state's electricity grid and putting downward pressure on prices.