Analysts and campaigners welcomed the final communique from the G20 meeting in Bali, Indonesia, which comes as negotiators in Egypt are struggling to agree on key issues before COP27 is supposed to end on Friday.
The G20 document also addresses the main source of tensions at COP27 talks: a debate on funding to help developing countries least responsible for global emissions cope with here-and-now impacts of climate change, or "loss and damage".
The communique urges all parties to "make progress on loss and damage at COP27, which is being held in Africa", without laying out a specific way forward for the contentious issue.
The G20 statement also reiterated a commitment to phase out "inefficient" fossil fuel subsidies over the medium term, while also saying the leaders recognize the importance of the transition to renewable energy and pledge "efforts towards the phasedown of unabated coal power".
"Unabated" refers to emissions from coal-fired power plants that are not syphoned off to prevent them from entering the atmosphere.
The document gives countries "a clear mandate to make progress at COP27 on all issues, including loss and damage, and commit to accelerate the deployment of clean energy," said Luca Bergamaschi, co-founder of Italian climate think tank ECCO.
"The positive signals from the G20 summit should put wind in the sails of the climate talks in Egypt, which are entering their final days," said Ani Dasgupta, CEO of the World Resources Institute.
The Group of 20 text promises to "pursue efforts" to curb global warming to 1.5 degrees Celsius above pre-industrial levels, a safer limit according to scientists.
However, not all environmentalists are satisfied with the G20 communique.
Avinash Persaud, special envoy on climate finance to Prime Minister Mia Mottley of Barbados, said G20 nations could unlock more financing from multilateral development banks and "prime the pump" for investments in energy transitions.
"They have missed the opportunity to deliver on that today, and we are running out of time," Persaud said.