More than 200 civil society organisations have urged G20 governments to end fossil fuel subsidies by 2020.
The joint statement has been signed by environmental groups, campaigners and researchers worldwide such as the Carbon Tracker Initiative, Canadian Youth Climate Coalition and 350 Australia.
They are calling on governments to set a clear timetable to phase out fossil fuel subsidies as well as public finance for oil, gas and coal production.
They are also urging them to commit to full transparency about fossil fuel subsidies from 2017.
The statement said: “We urge G20 members to take the decisive steps torward ending fossil fuel subsidies outlined in this statement, with the key action being the establishment of an ambitious 2020 deadline for the phase out of subsidies, in order to drive sustained and scaled-up action in the coming years.”