Origin Energy to Build Largest Battery in Australia

I'm surprised this isn't being discussed here.

Origin Energy has unveiled plans to build a giant 700-megawatt capacity battery at its coal-fired power plant in Eraring, south of Newcastle, in the New South Wales Hunter region.
If built, Origin said it would have capacity to supply that power to the grid for four hours.
If the plan goes ahead, the battery would be more than four times larger than the 150-megawatt Tesla battery in South Australia.
Origin's executive general manager Greg Jarvis said the battery would support Origin's transition away from coal-fired power generation by 2032

Source: https://www.abc.net.au/news/2021-01-12/largest-battery-in-australia-to-be-built-at-nsw-coal-fired-plant/13050642