The 2015 Budget has no vision for the future of South Australia, say SA's Australian Greens Senators.

Senator Penny Wright said the Government was continuing to protect big business at the expense of everyday South Australians.

"The Abbott Government has absolutely no vision for South Australia's future. Rather than finding new sources of revenue from the big end of town, this Budget cuts one vital service to fund another," Senator Wright said.

The new climate agreements signed by the Adelaide City Council and State Governments have left the Abbott Government marooned, says Australian Greens Senator for SA Penny Wright.

"The Abbott Government's determination to destroy the renewable energy target is an international embarrassment and risks local jobs here in SA," Senator Wright said.

The Australian Greens have called for an increased commitment to renewable energy from all levels of government in light of Alinta Energy's determination that a solar thermal plant in Port Augusta remains unfeasible at this stage.

Australian Greens Senator for South Australia Senator Penny Wright said South Australians overwhelmingly wanted renewable energy to replace dirty coal power.

"The future is renewable - there is no doubt about that," Senator Wright said. "It's time for all governments to step up and take the leader to make solar thermal happen at Port Augusta."

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.

As the Abbott Government makes its third attempt to repeal the carbon price, a new report has found South Australia faces a water crisis due to human-induced climate change.

Australian Greens Senator for South Australia Penny Wright says Prime Minister Abbott's stubborn ignorance on climate science was a betrayal of South Australians.

"While Tony Abbott goes for short-term political gain by scrapping a price on pollution, South Australia will pay dearly," Senator Wright said.