REUTERS:\u00a0<\/span>The battery has been installed in Jamestown, South Australia<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n December 1, 2017: The world’s largest lithium ion battery has begun dispensing power into an electricity grid in South Australia.<\/p>\n The 100-megawatt battery, built by Tesla, was officially activated on Friday. It had in fact provided some power since Thursday due to demand caused by local hot weather.<\/p>\n South Australia has been crippled by electricity problems in recent times.<\/p>\n Tesla boss Elon Musk famously vowed to build the battery within 100 days – a promise that was fulfilled.<\/p>\n In a Twitter exchange in March, an Australian software entrepreneur asked Mr Musk if he was serious about helping South Australia after it suffered a statewide blackout.<\/p>\n Mr Musk said he was – and if the battery wasn’t built within 100 days, South Australia would receive it for free.<\/p>\n The countdown began on 30 September after approval from regulators. Tesla finished the battery in about 60 days.<\/p>\n The renewable power plant is located in Jamestown, about 200km (125 miles) north of Adelaide, and connected to a wind farm run by French energy company Neoen.<\/p>\n