Emissions from this sector have decreased substantially since 1990 (by 32%), but business emissions increased by 7% between 2018 and 2019.
Mae allyriadau o’r sector hwn wedi gostwng yn sylweddol ers 1990 (gostyngiad o 32%), ond mae allyriadau busnes wedi cynyddu 7% rhwng 2018 a 2019.