Australian Greens leader Bob Brown has unveiled an ambitious balance of power policy agenda for his party, topped by climate change, euthanasia, maternity leave and a better deal for pensioners.

And Senator Brown warned the Greens would move in the Senate to change the Rudd government's emissions trading scheme (ETS) if it was not tough enough.

The Greens now have five senators and share the balance of power in the Senate with Family First's Steve Fielding and independent Nick Xenophon.

During an address to the National Press Club, Senator Brown today called on the Rudd government to get behind his party's plans, which he said would be popular with Labor voters.

Senator Brown said the Greens' priorities included renewable energy feed-in laws and an end to woodchipping of native forests and the clearance of Australia's woodlands.

Senator Brown expressed fears the Rudd government's actions on climate change, including its emissions trading scheme, would prove "too tentative and ineffective".

"We Greens want an emissions trading scheme that actually helps to stop climate change and avoid that dangerous tipping point of two degrees in global warming," he said.

"That requires a rigorous and comprehensive scheme which not only lowers Australia's 1990 pollution levels by 40 per cent by 2020, but which also turns down the growing rate of emissions ... by 2015. Seven years away.

"If the Rudd government falls short of these targets we will move, the Greens will move, to amend the legislation when it enters the Senate."

Senator Brown said the nation needed massive investment to retrofit all eight million Australian homes with solar hot water and insulation.

The Greens will prioritise reapplying racial discrimination laws to the Northern Territory intervention, and ensuring the Rudd government does not dump nuclear waste in the NT.

The party will also fight to further eliminate discrimination against same-sex couples and for a rise in pension rates.

Senator Brown said the party would continue to push to restore the rights of the territories to legalise voluntary euthanasia, and for fair maternity and paternity leave.

The Greens will also push the government to increase its international aid commitments and introduce better food labelling, Senator Brown said.

He said the Greens would would use the balance of power responsibly, and made it clear he was willing to work with the coalition.

"I have had very good talks with (Opposition Leader) Brendan Nelson and our door will always be open to discuss any issues with the opposition."