In July, French renewable energy company Neoen and Tesla were selected to deliver the project. The huge battery was delivered a few weeks ago, and Elon Musk made a promise to deliver it within "100 days or it's free".
This Friday, Jay Weatherhill, the state's premier, flipped the switch on the massive battery, calling it "history in the making". Though Musk did have a bit of a head start, he had the battery built in 60 days. However, it had already begun dispatching some power into the state's power grid on the afternoon of November 31 as temperatures rose above 30-degrees.
The battery farm launches today after extensive regulatory testing that took place to test the battery's ability to charge to, and from, Australia's National Energy Market and also act as a generator.
The facility which is being tested in the city of Jamestown is all set to launch officially soon and will be paired to the nearby Neoen Hornsdale Wind Farm for added stability.
The size of the battery is similar to the American football field. However, the battery is more likely to be called into action to stabilize electricity supplies at less critical times.
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Tesla's chieftain Elon Musk has delivered on his bold promise to build a new storage solution within 100 days - a move that the South Australian public met with applause following a number of frustrating blackouts across the country, including a nationwide one past year.
South Australia, which relies heavily on solar and wind-generated energy, has been scrambling to find a way to bolster its fragile power grid since the entire state suffered a blackout during a storm past year.
"Storage can respond within a fraction of a second".
Supporters of the project say it will help stabilise the grid and provide "dispatchable renewable energy" in a region that now gets more than 40 percent of its electricity from wind energy.
The efficient battery system will be the sustainable, effective energy solution, according to Tesla, because, South Australia has the highest electricity prices in the world.