"Japan joined the Methane to Markets Partnership in 2004. An international initiative to advance cost-effective, near-term reductions of methane emissions, the Partnership compels signatory nations to collaborate with other governments and the private sector to reduce global methane emissions and enhance economic growth, promote energy security, and improve the environment. Other Partnership aims include improving mine safety, reducing waste, and improving local air quality. The Partnership initially targets three major methane sources: landfills, underground coal mines, and natural gas and oil systems."(IEA, 2015 - see link below) IEA/IRENA Global Renewable Energy Policies and Measures Database © OECD/IEA and IRENA, [November 2020]