Mewn ymateb i gais gan Lywodraethau Cymru, yr Alban a'r DU i ailasesu targed allyriadau hirdymor y DU, cyhoeddodd y Pwyllgor ar Newid Hinsawdd ‘Net Zero – The UK’s contribution to stopping global warming’ ar 2 Mai. Prif argymhelliad y Pwyllgor yw y dylid mabwysiadu targed o leihau allyriadau nwyon tŷ gwydr y DU i sero net erbyn 2050. Er mwyn cyrraedd y targed hwn, y cyngor y mae’n ei roi yn yr argymhelliad yw y dylai Llywodraeth Cymru fabwysiadu targed o leihau allyriadau o 95% erbyn 2050, o'i gymharu â llinell sylfaen 1990.
In response to a request from the Welsh, Scottish and UK Governments to reassess the UK’s long-term emissions targets, the Committee on Climate Change (CCC) published ‘Net Zero – The UK’s contribution to stopping global warming’ on 2 May. The Committee’s headline recommendation is for the adoption of a target to reduce UK greenhouse gas emissions to net zero by 2050. In order for this target to be reached, their advice recommends the Welsh Government adopt a target to reduce emissions by 95% by 2050 against the 1990 baseline.