''Planning for 2050 is important but the Prime Minister shouldn't use a discussion about the future to mask his broken promises from the past and his neglect of tough decisions today,'' the Opposition Leader told a conference of Young Liberals yesterday.

Climate change was just one of a number of areas in which the Prime Minister had failed to deliver on his promises, Mr Abbott said.

''If [climate change] really is the greatest enemy that humanity faces, how can it be enough to reduce emissions by just 5 per cent in a decade or by 60 per cent over four decades by which time the real challenge will surely be dealing with disaster rather than avoiding it?'' Mr Abbott said.

''Mr Rudd runs the risk of looking like an environmental televangelist - a morals campaigner protesting feebly against an evil that has already overtaken us.''

The emissions trading legislation will be introduced into Parliament again this week when Mr Abbott will face his first question time as Opposition Leader. Two Liberal senators have indicated they could cross the floor to support it but the legislation will be defeated unless the Greens vote for it.

Talks between the Greens and the Government are due to be held tomorrow but there is little likelihood of an agreement.

The Greens are wedded to a far more ambitious scheme with less compensation paid to polluters. The shadow cabinet met for the first time on Friday to consider the Opposition's climate policy. The policy is expected to be released on Tuesday following a meeting of the joint party room.

Mr Abbott has promised there will be no new taxes or increased taxes to pay for his policy.

But it will match the same reduction of greenhouse gas emissions promised by the Government.

The Opposition's life in this regard was made easier last week when the Government committed to a 5 per cent reduction target, only going higher if there was international consensus to do so.