Greg Bourne, former BP Australasia president, once worked alongside Australia’s biggest LNG venture: Woodside’s North West Shelf. Now a councillor at the Climate Council, he warns extending the project will unleash billions of tonnes of emissions while delivering a “pittance” in economic benefit to Australia.

Yet Greg Bourne says the decision to keep the project running until 2070 was almost inevitable, after decades of lobbying in Canberra.