Australia is hoping to enter the climate talks in Paris with increased credibility after federal Environment Minister Greg Hunt revealed the 2020 carbon abatement targets will be met five years early. 
In the final update ahead of next month's global climate talks in Paris, Mr Hunt said Australia is set to beat its 2020 targets by 28 million tonnes. 
He said he was confident Australia would reach the new 26 to 28 per cent reduction target by the end of next decade, which he described as "serious and credible" compared to other countries.
The Department of Environment's national accounts to be released on Wednesday will show there has been an improvement of 264 million tonnes of potential abatement, which surpasses the 236 million tonnes target earlier this year - putting Australia in the black by 28 million tonnes.
"We have closed the emissions gap and go to Paris officially sub-zero and on track to beat our 2020 target," Mr Hunt will tell the National Press Club in Canberra on Wednesday
"This remains, however, a conservative forecast and I am hopeful that future updates will show an even greater surplus."
While Australia's 2020 carbon abatement target has been significantly reduced in recent years - from 755 million tonnes when the Coalition took office in 2013 to 236 million tonnes earlier this year, mostly due to the economic slowdown -  the Turnbull government is hoping it will give Australia some credibility at the Paris negotiations. 
Mr Hunt - who will attend the COP21 conference in Paris with Prime Minister Malcolm Turnbull - said Australia's 26 to 28 per cent target for 2030 were significant when compared to other big-emitters such as the United States, Canada and Japan.
"Our 2030 target is the equivalent of reducing emissions per capita by up to 52 per cent - the equal largest reduction of any G20 economy, along with Brazil," he said.
"In terms of the emissions intensity of our economy, our effort is even greater - with a reduction of up to 65 per cent below 2005 levels by 2030.
"I am confident we can achieve our 2030 target, but it will be a challenge as it should be."
But critics argue while Australia will meet its 2020 carbon abatement targets, its net emissions will increase due to increased land-clearing, a ramp-up of coal-fired electricity generation and increased coal and gas exports.
They argue more needs to be done to reduce emissions in the next five years or it will only make it harder to reach the 2030 targets.
Mr Hunt will also use his National Press Club address to spruik the Coalition's environmental successes, including the $2.5 billion Emissions Reduction Fund which has paid companies to deliver 92.8 million tonnes of carbon abatement at $13.12 a tonne.