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.

South Australian Greens Senator Sarah Hanson-Young has called on South Australian universities to divest from fossil fuel companies and reinvest in the future of the state; renewable energy.

"As a clean energy power-house, the push towards renewables will help to secure the economic future of South Australia for generations to come," Senator Hanson-Young said.