Some green groups were unimpressed, with Greenpeace UK saying the G7 host, British Prime Minister Boris Johnson, had "simply reheated old promises" and that it would take "nothing for granted" until nations came up with the money.
"As democratic nations, we have a responsibility to help developing countries reap the benefits of clean growth through a fair and transparent system. The G7 has an unprecedented opportunity to drive a global Green Industrial Revolution, with the potential to transform the way we live.
G7 leaders are also expected to set out action to cut carbon emissions, including measures such as ending almost all direct government support for the fossil fuel energy sector overseas and phasing out petrol and diesel cars. "If that is so, then the decisions we make this decade - in particular the decisions made by the most economically advanced nations - are the most important in human history."'Nothing granted'