Former Labor senator Stephen Conroy says Opposition leader Peter Dutton is able to “attack from all sides” because he does “not” have a policy.

Mr Dutton said he would not quit the Paris Accord or give up on net zero.

It is understood Mr Dutton's recent dismissal of the 2030 climate target was due to the goal being unachievable.

“The majority of the Australian public has demonstrated, by the last election … that we need to move to renewables, and they would like to move to them as fast as we can,” Mr Conroy told Sky News host Paul Murray.

“The challenge for Labor has always been … is that it absolutely says gas has to be part of this transition.

“Peter Dutton’s position of saying I’m not going to tell you – it’s too hard to do out of government.

“I’ve seen experiments like this before – not having a policy – you’re able to attack from all sides, frankly.”