Rei writes: Tesla announced the completion of the world’s largest battery — a 100 MW/129 MWh wind-power backup system for 30,000 homes in South Australia. Three times more powerful than any other battery on Earth, the $50 million project had garnered press due to Elon Musk’s Twitter boast that it would be completed within 100 days of the contract signing or it would be free. In the end, Tesla took it up a notch: the battery was finished 55 days from the date of contract signing and 99 days from the date of Musk’s boast itself.

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Source: Slashdot – Tesla Completes World’s Largest Battery Project In Half the Time Promised