Tesla mega-battery in Australia activated

[Gerald]

The world's largest lithium ion battery has begun dispensing power into an electricity grid in South Australia.
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.
South Australia has been crippled by electricity problems in recent times.
Tesla boss Elon Musk famously vowed to build the battery within 100 days - a promise that was fulfilled.

http://www.bbc.com/news/world-australia-42190358

A nice test.