China's carbon emissions output could peak around 2030 if the government continues to be serious about "strengthened measures" to improve energy efficiency and if it accelerates exploration of renewable energy, a panel of experts says.

In 2050 China Energy and C02 Emissions Report, the panel from the National Development and Reform Commission and the Development Research Center of the State Council, says that with the right policies, emissions growth could slow after 2020, with a peak around 2030.

This is the first time a Chinese think-tank has officially announced when it thinks China's carbon emissions will peak.