Serch hynny, mae’r amserlen ar gyfer gostwng cap ETS y DU yn hanfodol. Heb gytuno ar lwybr deddfwriaethol, ni fyddai wedi bod yn bosib cyhoeddi Ymateb y Llywodraeth gyda'i hymrwymiad i roi’r cap ar waith erbyn 2024. Byddai peidio â gwneud hyn wedi gohirio’r cap ac felly wedi peryglu ein targedau hinsawdd a chyfranogwyr ETS y DU. Bydd gohirio’r cap ond yn arwain at ostyngiad llymach i’r cap (a datgarboneiddio) nes ymlaen yn y degawd hwn, gan roi mwy o bwysau ar ein diwydiannau.
Nevertheless, reducing the UK ETS cap is time critical. Without an agreed legislative route, the Government Response with the commitment to implement the cap by 2024 could not have been published. Failing to do this would have delayed the implementation of the cap and therefore posed significant risks to both our climate targets and the participants of the UK ETS. Delaying implementation of the cap will only result in a steeper cap (and decarbonisation) trajectory later in this decade, placing greater pressure on our industries.