Climate Change Minister Chris Bowen says the government's climate change legislation will send a message to the global community about Australia's renewed action on reduction emissions.
The government's legislation enshrining a 43 per cent reduction in emissions reduction is set to pass the House of Representatives on Thursday before moving to be debated in the Senate.
The bill, which will also enshrine net-zero by 2050, is likely to pass the upper house as well, following the support of the Greens.
While Liberal MP Bridget Archer has indicated she would cross the floor on the bill, Mr Bowen said the opposition had failed to read the mood of the electorate in rejecting the legislation.
"I thank people from across the parliament for working with the government to make this a reality, the Liberal Party has made themselves irrelevant," he told ABC TV on Thursday.
"Australia is open for business to become a renewable energy powerhouse and we welcome investment in the transmission, shortage and renewables. This legislation is sending the message."
Following consultations with the Greens, the government agreed to ensure the emissions target could only go up in future, with a mechanism in place to increase its ambition.
There will also be greater transparency and strengthened requirements on the Climate Change Authority.
Greens senator Mehreen Faruqi said the party had led to the bill's improvement.
However, the Greens will still move to oppose new coal and gas projects.
"We went into the process in good faith, always with the intention of improving this bill, which was really weak," she told ABC radio.
"But let's be clear, coal and gas and new coal and gas will blow this target pretty quickly. And that fight will continue."
ACT independent senator David Pocock said the 43 per cent target enshrined in the legislation was not high enough, but having certainty was important.
The crossbencher said he would further examine the bill once it goes to a committee before its introduction into the Senate.
"I'll be looking at it, continuing to work with Minister Bowen on what he's described as any sensible amendments from the crossbench," he told ABC TV on Thursday.
"It would be disingenuous of me to rubber stamp something before it comes before the Senate. I'm not here to rubber stamp the government bills of the Greens, I'm here to represent the ACT."
The government would need the support of all 12 Greens in the Senate as well as one additional crossbencher to pass the bill in the Senate.
Senator Pocock said it was reassuring the government and the Greens were able to come to an agreement on the climate bill.
"It's really important that we do legislate a target," he said.
"My job is to work with the crossbench, work with the government to ensure that whatever we do legislate come September does have integrity."
Liberal MP Bridget Archer indicated she would cross the floor and support the government's climate bill.
The Tasmanian MP said it was important to stand up for her community in supporting the legislation.
Opposition Leader in the Senate Simon Birmingham said he had respect for Ms Archer and her decision.
"From my perspective, if the 43 per cent target required legislation, then I would have wanted to vote for it in a heartbeat. However, it doesn't require legislation," he said.
"The test will now be in terms of that policy, making sure that it is a genuine policy for higher levels of emissions reduction, backed by credible policies attached to that."
© AAP 2022