This decision, taken during extra time at the COP29 conference, is a major step forward in a debate that has dragged through climate talks for years, and diplomats broke into applause when the decision was gavelled.
Supporters say a UN-backed framework for carbon trading could direct investment to developing nations where many credits are generated.
Critics fear that if set up poorly, these schemes could undermine the world’s efforts to curb global warming.
An Lambrechts from Greenpeace said the agreement delivered “carbon markets with loopholes and a lack of integrity” that would allow fossil-fuel companies to keep polluting.
Reuben Manokara of WWF said the final text was “a compromise” and though not perfect it provided “a degree of clarity that has long been absent” from global efforts to regulate carbon trading.Carbon credits are generated by activities that reduce or avoid planet-heating greenhouse gas emissions, such as planting trees, protecting existing carbon sinks or replacing polluting coal with clean-energy alternatives.Until now, these credits have mainly been traded by companies on an unregulated market dogged by scandal.
But the 2015 Paris climate deal envisaged that countries could also take part in a cross-border trade of carbon reductions.
The broad idea is that countries — mainly wealthy polluters — can buy carbon credits from other nations that are doing better on their own emissions-cutting targets.
Article 6
The initiative, known as Article 6, includes both direct country-to-country trading and a separate UN-backed marketplace.
It has proved popular with both developing countries looking for international financing, and wealthier nations eager to find new ways to meet steep emissions-reduction targets.
The European Union and the United States pushed for an agreement at COP29 in Azerbaijan’s capital Baku. Many developing nations, particularly in Asia and Africa, have already signed up for projects.
But experts fear that the systems could allow countries to trade dubious emissions reductions that cover up their failure to actually reduce greenhouse gas emissions.
As of earlier this month, more than 90 deals have already been agreed between nations for over 140 pilot projects, according to the UN.
But so far only one trade has happened between countries, involving Switzerland buying credits linked to a new fleet of electric buses in Thailand’s capital Bangkok.
Switzerland has other agreements lined up with Vanuatu and Ghana, while other buyer countries include Singapore, Japan and Norway.
‘Biggest threat to Paris agreement’
The Climate Action Tracker project has warned that Switzerland’s lack of transparency over its own emissions cuts risks “setting a bad precedent”.
Niklas Hohne of NewClimate Institute, one of the groups behind the project, warned there was a concern that the market will create an incentive for developing countries to underpromise emission cuts in their own national plans so they can sell credits from any reductions that go above this level.
“There’s big motivation on both sides to do it wrong,” he said.
Injy Johnstone, a researcher specialising in carbon neutrality at Oxford University, told AFP the fact that nations can set their own standards in these country-to-country deals was a major concern.
She said overall the risk of greenwashing makes Article 6 “the biggest threat to the Paris agreement”.
Alongside this decentralised, state-to-state system, there will be another UN-run system for trading carbon credits, open to both states and companies.
On the opening day of COP29, nations agreed a number of crucial ground rules for setting this UN-administered market in motion after nearly a decade of complex discussions.
“There are many projects waiting” for the market, Andrea Bonzanni of the IETA International Emissions Trading Association, told AFP. The IETA has more than 300 members including energy giants such as BP.
Despite these positive signs, some experts expressed doubt that the quality of the carbon credits traded on the regulated market would be much better than those that came before.
Erika Lennon of the Center for International Environmental Law said it would be necessary to make sure these markets do not create “even more problems and more scandals than the voluntary carbon markets”.
These “voluntary” markets have been rocked by scandals in recent years amid accusations that some credits sold did not reduce emissions as promised, or that projects exploited local communities.
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