Mae eiddo rhentu preifat domestig Cymru wedi'u rheoleiddio gan y Safonau Effeithlonrwydd Ynni Gofynnol. Rhaid cael Tystysgrif Perfformiad Ynni gradd E neu uwch ar eiddo o'r fath i gydymffurfio â'r gyfraith.
Domestic Private Rented Property in Wales are regulated by the Minimum Energy Efficiency Standards. An EPC rating of E or above is required on these properties in order to comply with the law.