The coalition's position on net zero emissions must be in the national interest, a Liberal frontbencher says, as MPs poise to thrash out a stance on the issue that's been dividing the opposition.

The Liberals' formal position on the climate target will be finalised following midweek meetings in Canberra, with the party to negotiate a single policy with the Nationals in the days to follow.

Infighting over the issue has intensified, placing further pressure on Opposition Leader Sussan Ley's leadership since the Nationals announced their position ahead of their coalition colleagues.

Opposition energy spokesman Dan Tehan said a consensus position within the coalition on emission targets would be challenging but still achievable.

"I've never said this would be easy, I've always said it's go

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