In 2020, it was estimated that greenhouse gas emissions totalled 33.6 million tonnes of carbon dioxide (CO 2) equivalent.
Lleihau allyriadau nwyon tŷ gwydr: amcangyfrifir gostyngiad mewn allyriadau o 3.2 miliwn tunnell sy’n cyfateb i CO2 dros 10 mlynedd[ 2 ];