Australia faces pressure to back its controversial climate target with action as the minister in charge bats away questions over a new renewable energy goal.

Labor unveiled its 2035 climate target to criticism from environmental groups and the business sector as it revealed Australia would aim to reduce greenhouse gas emissions by between 62 and 70 per cent compared to 2005 levels.

The goal aligns with advice from the Climate Change Authority.

But when asked if Australia would follow it up with other mechanisms that would help reach the target, such as a 90 per cent renewable energy goal by 2035, Climate Change Minister Chris Bowen did not offer a firm commitment.

"We haven't set a particular (2035 renewables) target," he told ABC's Insiders on Sunday.

"What we have done is set our em

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