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Origin Energy has unveiled the biggest step in its goal to transition away from coal: building the world's largest lithium-ion battery.

Australia is currently home to the world's largest lithium-ion battery: the 150MW Tesla battery in South Australia. The company running it, Neoen, has announced plans to build a 300MW battery in Victoria and a 500MW battery in NSW.

Origin's new operations will surpass even those – with a 700MW battery planned at the Eraring Power Station near Dora Creek on the western side of Lake Macquarie. Eraring currently burns coal for fuel, but this will be phased out.

Renewable energies will create power for much of the day, while the battery will have the capacity to feed the grid for up to four hours when those sources aren't available.

The battery will be built in three stages, the first to be completed and operational in 2022, making use of the existing infrastructure at Eraring. In doing so, the battery will have a pre-existing network and delivery system into the grid making the transition smooth and cost-effective.

Origin has announced plans to move away from coal-fired power by 2032 and the Eraring battery is a positive step in that direction.

Image Credit: Tesla batteries at Gannawarra solar farm

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