Opportunities to tackle short-lived climate pollutants and other greenhouse gases for China

Mitigating methane emissions: Domestic and joint efforts by the United States and China

“…The U.S. has a total methane reduction potential of 224 million metric tons of CO 2 equivalent (Mt CO 2 e) in 2030 using abatement measures at or below $100 per metric ton of CO 2 e [ 7 ]. In China, the methane reduction potential is estimated to reach 469 Mt CO 2 e in 2030, equivalent to a 35% reduction from 2015 levels [ 9 ]. The projected upper limits for methane reduction by 2030, compared to a Business-as-Usual scenario, display a noteworthy similarity, with estimates ranging from 38% to 41% [ 10 , 11 ].…”

“…The U.S. and China both have significant mitigation potential in their energy sectors, with the greatest reduction potential coming from the oil and gas sector. The U.S. has a mitigation potential of 144 Mt CO 2 e up to $100 per metric ton of CO 2 e, while China's energy sector (including coal mining and oil & gas) has a reduction potential of 308–407 Mt CO 2 e with abatement costs below/up to $100 per metric ton of CO 2 e [ 9 , 10 ]. Reducing methane emissions from coal mining can also provide potential reductions of 12–25 Mt CH 4 per year [ 6 ].…”

“…Reducing methane emissions from coal mining can also provide potential reductions of 12–25 Mt CH 4 per year [ 6 ]. China has a higher reduction potential in coal mining, with 256–399 Mt CO 2 e of reduction potential in 2030 [ 9 , 10 ]. Reducing methane emissions from these sectors can be achieved through measures such as ventilation air methane oxidation, recovery and use of methane, upgrades to equipment, changes in operational practices, monitoring measures, and management of abandoned coal mines.…”

“…The U.S. and China have similar shares of methane emissions from landfills and waste and mitigation measures include controlling and flaring emissions, utilizing landfill gas, and reducing organic waste in landfills and solid waste. The U.S. has a mitigation potential of 8 Mt CO 2 e in 2030 at an abatement cost of $100 per metric ton of CO 2 e [ 7 ], while China's potential is 26–45 Mt CO 2 e in 2030 [ 9 , 10 ].…”