Climate Change Minister Penny Wong's pronouncements on the CPRS are increasingly distant from the reality of the draft legislation, the Australian Greens said today.

"Penny Wong is increasingly sounding like a used car salesman, desperately calling out ‘a deal this good can't last forever' when no-one wants to buy the beat up old gas-guzzler she has on offer," said Australian Greens Deputy Leader, Senator Christine Milne.

"It is obvious to everyone that the car Penny Wong spruiks bears little resemblance to what is actually in front of us.

"The CPRS won't get us safely where we need to go and it will slow down others who want to get there."

Minister Wong's speech to the Lowy Institute today bravely presented a view of global climate politics which is at odds with reality.

"If Australia locks out the option of taking on serious emissions cuts, we can only stand in the way of a strong global agreement," Senator Milne said.

"Locking in scientifically unacceptable targets is a signal to the rest of the world that Australia heads to Copenhagen with the same blocking mentality it took to Kyoto and every global climate conference since.

"It should be remembered that in Bali, behind the smiles and congratulations being offered to the newly elected Rudd Government, there was very real concern about Australia's refusal to accept the 25-40% negotiating range and its continued chairing of the 'Umbrella Group' of spoilers in the global negotiations.

"Using the same negotiating team as the Howard Government, the Rudd Government continued its bad faith approach in Poznan, refusing to reveal the targets it had determined well before and announced to Australia immediately after the conference had closed.

"It was clearly noted by the rest of the world that the Rudd Government was well aware that its 5-15% target would go down badly at the conference and had to be kept secret until afterwards.

"Global negotiators are now worried that Australia's cap of 15% is the battering ram of the Umbrella Group to the world's aspirations for targets capable of addressing the science.

"Penny Wong is right to be worried about what the rest of the world thinks of Australia. But 5-15% is more of a worry to the world than a bill still being negotiated."