The Greens have called for the establishment of a national large-scale energy storage scheme, managed by the Australian Energy Market Operator and the Clean Energy Regulator, and supported by $2.2 billion in funding over a four-year period to build energy storage at grid level.

Launched in Adelaide today by Greens deputy leader Adam Bandt and senator for South Australia Sarah Hanson-Young, the policy called for a legislated national target of 20 gigawatts of energy storage technology such as large battery installations.

Greens deputy leader Adam Bandt in front of the Liddell and Bayswater coal-fired power stations.

Such a system could deliver between 400 and 450-gigawatt hours of storage, which has the potential to power more than 100,000 homes for eight hours.

"South Australia is already leading the world in renewable energy generation and installing grid level battery storage, but there is much more to do," Ms Hanson-Young said.