Yr haf yma, cyhoeddodd Llywodraeth Cymru waharddiad ar danwydd ffosil i gynhesu tai cymdeithasol sy’n cael eu hadeiladu o’r newydd, gydag uchelgais i'r sector preifat wneud yr un peth erbyn 2025.
This summer Welsh Government announced a ban on fossil fuels to heat newly built social homes, with ambitions for the private sector to follow suit by 2025.