Mae dŵr o byllau glo yn ffynhonnell gwres carbon isel a chynaliadwy, a allai gystadlu â phrisiau nwy cyflenwi cyhoeddus a sicrhau arbedion carbon o hyd at 75% o'i gymharu â gwresogi nwy.
Mine water is a low carbon, sustainable heat source, which could compete with public supply gas prices and deliver carbon savings of up to 75% compared to gas heating.