Australian Greens Senator for South Australia Penny Wright says Prime Minister Tony Abbott must end the uncertainty around the future of the Renewable Energy Target, as South Australia announces plans to raise its target to 50 per cent.

"The Renewable Energy Target is cutting pollution, creating jobs and will bring power bills down," Senator Wright said.

South Australia stands to lose almost $3 billion of investment if Tony Abbott dumps the Renewable Energy Target, says SA Greens Senator Penny Wright.

New figures compiled by Senator Wright show South Australia will suffer more than any other state if the popular RET is scrapped.

“South Australia cannot afford to lose the RET,” Senator Wright said. “If the RET goes, $2.9 billion of investments in clean energy will go overseas instead.