Following Professor Garnaut's endorsement of the Greens' interim carbon price proposal yesterday, the Prime Minister and Minister Wong should immediately begin good faith negotiations towards that outcome.

The interim proposal for a two year fixed carbon price to get Australia moving has received widespread support, in stark contrast to the friendless Carbon Pollution Reduction Scheme.

"Professor Garnaut has now joined environment and business groups in endorsing our interim carbon price proposal, and key Senators have told us they are interested in discussing it," Australian Greens Deputy Leader, Senator Christine Milne said.

"Mr Rudd and Minister Wong should abandon their political exercise and seize this opportunity for real action on the climate crisis.

"The Rudd Government's spin-over-substance approach to the climate crisis is disintegrating into a shambles, with more and more questions about their renewable energy policies as well as the CPRS mess.

"Our interim proposal is designed to be strengthened as time passes, while the CPRS is impossible to strengthen without tens of billions more dollars flowing to polluters.

"The CPRS will not and must not pass in its current form, but this interim proposal has a real chance. Let's seize it and get Australia moving towards the zero carbon future."