After the Opposition Leader released a remodelled scheme which he said would be greener, cheaper and smarter, the Climate Change Minister, Penny Wong, said the Liberals ''can do this the easy way or the hard way''.

''One way or another, we are going to get this through,'' she said of Labor's scheme.

With the Senate to vote on Labor's scheme on Thursday, Mr Turnbull and the independent senator Nick Xenophon urged a further delay.

Modelling they commissioned in June proposes a radical revamp, the main change being less punitive treatment of electricity generators.

Mr Turnbull, whose party is divided on climate change, reaffirmed the Coalition would vote to defeat Labor's scheme.

He stressed the new model, by Frontier Economics, was not policy, but would help shape amendments the Coalition would propose when Labor reintroduced its bill.

If the bill were defeated again after a gap of three months, Labor would have a trigger for a double-dissolution election.

The proposals will be run past today's Coalition party-room meeting at which MPs and senators are expected to vent their feelings over policy differences and Mr Turnbull's leadership.

Under Labor's scheme, known as cap and trade, electricity producers would pay for each tonne of carbon they emit by buying permits.

This would cause a sharp rise in the price of electricity for which low and middle-income households would be compensated.

Under Mr Turnbull's proposal, electricity would be treated under a now-abandoned Canadian model known as baseline.

Power stations would be free to pollute to a certain limit and be charged after exceeding this.

The rise in power bills would be far less. Also, small business, which receives scant compensation under Labor's scheme, would be spared the impact of high power prices.

The proposal is a hybrid because it combines a baseline approach for power stations with a cap-and-trade approach for other heavy polluters.

Government officials attacked the proposal as magic pudding economics. If there was a scheme that cost less, cut more greenhouse gases and caused less disruption, the Government, and those in Europe, Asia and the United States, would have adopted it, they said.

The report's release failed to calm Coalition dissenters.

A Liberal who opposes doing a deal said all the new proposals did was keep alive the prospect of ''a collapse in November''. ''Let's have an election on it,'' he said.