The Climate Change Action Bill 2006 is the nation's first climate change Bill, which was introduced into the Senate in December 2006 by Australian Greens Senator Christine Milne. The Bill was debated in March 2007. Neither the Coalition nor Labor supported the Bill.

It was the first attempt in Australia to set legally binding national targets for greenhouse gas emissions, 20% below 1990 by 2020 and 80% below 1990 by 2050. The main provisions of the Bill are:

* Ratify the Kyoto Protocol;

* Set emission targets for 2020 (20% below 1990 levels) and 2050 (80% below 1990) including annual progress reporting and five-year review periods;

* Introduce a Greenhouse Trigger into the EPBC Act for any action likely to result in greenhouse gas emissions of more than 100,000 tonnes of carbon dioxide equivalent in any 12-month period;

* Require large energy users to undertake energy efficiency audits and to implement identified energy savings measures;

* Introduce a national energy savings target;

* Require a minimum price to be paid for renewable energy;

* Increase the Mandatory Renewable Energy Target so renewable electricity contributes at least 15% to national demand by 2012 and 25% by 2020; and

* Immediately end the harvesting of old growth forests to maintain existing significant carbon stores.