Erwin is one of Australia's most experienced independent climate change policy advocates. Over 30 years he has lead many local, nations and international campaigns to address climate change including as the Deputy CEO at the Climate Institute, climate change program manager at the Australian Conservation Foundation and head of Australian campaigns at Greenpeace. Erwin currently works as an independent consultant to business, NGOs, philanthropic organisations and international think tanks, is a director of Climate Analytics Australia and a member of AGL's CEO advisory council.