Mewn ymateb i gais gan Lywodraethau Cymru, yr Alban a'r DU i ailasesu targed allyriadau hirdymor y DU, cyhoeddodd y CCC ei bapur 'Net Zero - the UK's contribution to global warming' ym mis Mai.
In response to a request from the Welsh, Scottish and UK Governments to reassess the UK’s long-term emissions target, the CCC published its ‘Net Zero – the UK’s contribution to global warming’ in May.