South Australia's big Tesla battery

THE TESLA LITHIUM-ION BATTERY:

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

*The Tesla Powerpacks will be able to store 129-megawatt hours of energy, enough to power 30,000 for an hour on a full charge.

* It has been built near Jamestown, 200 kilometres north of Adelaide, and has been paired to the existing Hornsdale wind farm operated by French renewable energy company Neoen.

* It has cost an estimated $50 million and could have a life of more than 30 years, but will require upgrades during that time.

* The battery will help stabilise the state's electricity grid and, with other elements of the state's power plan, will put downward pressure on prices.

* Lithium-ion batteries are one of the most energetic rechargeable batteries available.

* The electrodes are made of lithium and carbon making them lightweight and highly reactive - a lot of energy can be stored in the atomic bonds giving the batteries a high energy density.

* Each Tesla Powerpack weighs 1600 kilograms and is 2.1 metres tall, 1.3 metres long and 0.8 metres wide.