The Australian Office of Financial Management and Treasury declined to comment on the lawsuit.
The case comes amid a surge in litigation from Europe to Mexico over the past five years as activists use the courts to pressure governments, companies and investors to act against global warming. Last week, a A$57 billion ($41 billion) pension fund sued in Australia over its disclosure of climate change risks settled the lawsuit with a commitment to net-zero emissions in its portfolio by 2050.
As one of the world’s biggest per-capita polluters, Australia gets almost one third of it’s national income from industries exposed to economic disruption and risk from climate change, according to Deloitte Access Economics. Should it go unchecked, the economy could shrink by 6% over the next five decades -- the equivalent to a A$3.4 trillion loss in gross domestic product, the firm said in report last week.