Elon Musk said Friday that it would take just 100 days to build the 100-megawatt battery and, coupled with a wind farm owned by French energy company Neoen, will operate continuously and provide additional power to South Australia during emergencies, according to BBC News.
Tesla will have the system installed by December 2017, which will have South Australia being home to the world's largest lithium-ion battery storage project in the world.
The issue of reliable energy was pressing in South Australia following a blackout caused by a storm previous year which left nearly the entire state without electricity.
Regardless, it brought into question the state's focus on renewables - how could wind turbines power a state and help with the peak capacity?
Worldwide and local clean energy storage providers also rose to the challenge but the final results of negotiations reveal that the Australian government has chosen to take Musk up on his guaranteed service.
South Australia's old electrical infrastructure was heavily damaged last September when it was hit by the biggest storm the country had seen in 50 years, says the BBC. Now the company has ambitious plans to extend that functionality to an entire Australian state by building the world's biggest battery storage system to keep homes powered come hell (ish summers) or high water.
Beyond stabilizing South Australia's power grid, the battery will also help lower consumer prices, as it can charge during periods when power is cheap, and then discharge when power is relatively more expensive. "It's what we said publicly and that's what we're going to do", Musk said during a press conference, who also thanked Atlassian's Mike Cannon-Brookes for "talking smack" with him on Twitter.
The electric auto company will partner with French-based renewable energy company Neoen to install the 100MW grid-scale battery by the end of the year. He reiterated that they need to make sure that it's working properly and that they will get it done even under 100 days.
Mr Musk said the South Australian battery project would be "three times further than anyone has gone before".
Musk said he insisted the 100-day deadline be written into the project's contract since that's what he said publically.style="text-align: center;"