2, 650 of these householders, who were on a low income and living in the most inefficient properties also had their homes improved with a package of energy efficiency measures.
I’r 2,650 o’r aelwydydd hynny oedd ar incwm isel ac yn byw yn y cartrefi mwyaf aneffeithiol, cafodd eu cartrefi eu gwella gyda phecyn o fesurau arbed ynni.