A wnaiff Llywodraeth Cymru ymrwymo i gyhoeddi cynllun gweithredu i Gymru ar gyfer methan, o gofio mai methan yw un o'r nwyon tŷ gwydr mwyaf pwerus, ac yng ngoleuni cynllun gweithredu methan Llywodraeth y DU ei hun a gyhoeddwyd yn ystod hydref 2025 a bod 159 o wledydd wedi ymrwymo i'r Addewid Methan Byd-eang?
We recognise the importance of reducing methane emissions in tackling climate change and they are already addressed through the Welsh Government's statutory approach to reducing greenhouse gas emissions. The scope of the Carbon Budget 3 Delivery Plan includes all greenhouse gases listed under the Environment (Wales) Act 2016, including methane, and sets out the policies and proposals needed to meet Wales's emissions reduction targets.