The aim is to install a package of measures to increase the energy rating of a property towards a SAP rating of C where possible and when it is cost-efficient to do so.
Y nod yw gosod pecyn o fesurau i gynyddu sgôr ynni eiddo tuag at sgôr SAP o C lle bo hynny'n bosibl a phan fydd yn gost-effeithiol i wneud hynny.