These regulations set challenging targets for emissions to be reduced by 63% by 2030, 89% by 2040 and at least 100% by 2050, based on 1990 levels.
Mae'r rheoliadau hyn yn gosod targedau heriol ar gyfer lleihau allyriadau 63% erbyn 2030, 89% erbyn 2040 ac o leiaf 100% erbyn 2050, yn seiliedig ar lefelau 1990.