Tesla switches on the world's biggest battery

Premier Jay Weatherill is due to visit the battery site - alongside the Hornsdale windfarm near Jamestown in the state's mid north - tomorrow, to mark its official opening on the first day of summer.

Musk accepted the challenge, adding if he couldn't produce the battery within 100 days of signing the contract the battery and installation would be free. 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.

"Today's launch follows a successful period of regulatory testing that ensured the battery's ability to both act as a generator and charge to and from the National Energy Market", South Australia said on December 1.

The 100-megawatt Li-ion battery is paired to a neighbouring wind farm called Hornsdale Wind Farm, owned by a private French firm Neoen, to bring greater reliability and stability to the state's electricity grid.

The size of the battery is similar to the American football field.

Tesla is proud to say that the battery helps to resolve the power shortage issues the state's been having, and assist in helping power more homes during summertime peak loads.

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 a year ago. South Australia, of course, is no stranger to power outages, as blackouts left much of the area without power last summer.

Meanwhile, opponents of the South Australia's new pro-renewable energy solution argue that the battery is a "Hollywood Solution" in a country that still relies on fossil fuels, mainly coal, for two-thirds of its electricity.

The battery packs are expected to secure the region's electricity supply and allows for clean and affordable wind energy being dispatched to the grid.

Tesla said it hopes the project "provides a model for future deployments around the world".