China's national voluntary greenhouse gas emission reduction trading system saw 20,070 tonnes of certified emission reductions (CERs) change hands on Sep 4, with turnover reaching 1.90 million yuan ($0.28 million) and an average price of 94.75 yuan/t, according to exchange data. Cumulative volume since the market's launch reached 22.07 million tonnes by Sep 4, 2026, with total turnover of 1.77 billion yuan.