The Coalition hasn't ruled out using international units if it opts for a tougher 2020 target, while the Climate Change Authority says access to international emissions reductions is crucial to achieve low-cost cuts of up to 25% by 2020.
There is no justification for cutting emissions in 2020 by more than 5% and decisions on targets shouldn't ignore the possibility of a world that warms more than 2°C, says the Australian Industry Greenhouse Network (plus other submissions to the 'caps and targets' review).
In a new issues paper, the Climate Change Authority leaves open the prospect of recommending a target for 2030, as well as 2020, and asks how emissions caps on carbon-liable entities can best contribute to meeting national targets.
A review that will guide the Government's setting of carbon price scheme pollution caps must ensure Australia takes no more than its fair share of the global emissions 'pie', says a new Climate Institute report.
The Climate Change Authority will release its draft recommendations on a national 2020 emissions reduction target and trading-scheme pollution caps just after the September federal election.