Almost all households reported that they had central heating (98.8%, 1.3 million) and 1.1% (14,000) of households used at least one renewable energy source.
Roedd gan bron pob cartref wres canolog (98.8%, 1.3 miliwn) ac roedd 1.1% (14,000) o gartrefi’n defnyddio o leiaf un ffynhonnell ynni adnewyddadwy.