Garnaut criticism shows Rudd is a 'climate change fraud'  (Australian Broadcasting Corporation)

The Opposition's environment spokesman, Greg Hunt, says Professor Garnaut's criticism shows how far Kevin Rudd has moved from his original stance on climate policy.

"Well prior to the election, Professor Garnaut was the great touchstone for Kevin Rudd," he said.

He says the Government should have downplayed expectations.

"Well Kevin Rudd set expectations unbelievably high, he did it on a craven basis, knowing that he would never achieve what he promised," he said.

"Its all about the impression of activity and Ross Garnaut has exposed him as a climate change fraud."