It will not set any ambitious targets for 2030 - an objective of next month's COP26 global climate summit.
Prime Minister Scott Morrison said the plan would not include closing down Australia's fossil fuel sectors.
"We won't be lectured by others who do not understand Australia. The Australian Way is all about how you do it, and not if you do it. It's about getting it done," Morrison wrote. "We want our heavy industries, like mining, to stay open, remain competitive and adapt, so they remain viable for as long as global demand allows."
The government has refused to release modelling underpinning the plan and is keeping details of the package secret. Modelling underpinning the projections would be released “eventually”, Morrison said.
Perth's Murdoch University ecology expert Joe Fontaine said it had "all the strength of a wet paper bag".
Australia's Climate Council think tank said it was "a joke without strong emissions cuts this decade".