Tesla to build world"s largest battery in Australia

Billionaire Musk tweeted an offer to help build a largest battery farm in March. After South Australia hit with total blackout when an "unprecedented" storm wrecked power transmission towers in 2016.

This system will be three times more powerful than any system on Earth. Musk told reporters in the state capital Adelaide. Australia is one of the world"s worst per capita greenhouse gas polluters due to heavy use of coal-fired power.

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Experts said the battery could help transform the renewable energy landscape by addressing the intermittent nature of sources. Such as wind and solar by pairing them with a large-scale electricity storage system. Musk said it was "common sense that if you have solar you must have battery. Because otherwise your power is going to be proportionate to how sunny it is".

Battery generates 100 megawatts enough power for 30,000 homes

Tesla has built the world"s current largest battery, which came online in California in December, Musk said. Adding that the South Australian battery would be 100 megawatts enough to power 30,000 homes. The battery to built in Jamestown, 230 kilometers (143 miles) north of Adelaide. Paired with a nearby wind farm run by Neoen, a French renewable energy company.

Musk acknowledged his company had to overcome the technical risks associated with building a project at such a large scale, but said Tesla was confident of its success. No figures given for the cost of the contract.

The high-flying firm, known for producing electric cars, has agreed to deliver the battery "within 100 days or it is free", Weatherill added.

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Neoen, built major projects around the world from 2008, operates Europe"s biggest solar energy park in southwest France. Produce the equivalent annual electricity to supply a town of 300,000 people.

South Africa-born Musk has envisaged Tesla as a company that can help reduce emissions by not only selling people electric cars, but also generating and storing the renewable energy that powers them.