Mae Safon Ansawdd Tai Cymru yn gwella safonau effeithlonrwydd ynni yn y sector tai cymdeithasol. O dan gam cyntaf arbed, mae cartrefi cymdeithasau tai mewn ardaloedd adfywio wedi bod drwy brosesau ôl-ffitio gan gynnwys defnyddio ynni'r haul i gynhesu dŵr a chynhyrchu trydan. Mae ail gam arbed bellach yn cael ei ddatblygu, a bydd yn cael cyllid Ewropeaidd i estyn darpariaeth ar draws cartrefi preifat a chartrefi awdurdodau lleol.
Welsh Housing Quality Standard is driving up standards of energy efficiency in the social housing sector. In Regeneration Areas, Housing Association homes have benefitted from Retrofit measures that have included the use of solar energy for heating hot water and generating electricity under the first phase of arbed. The second phase of arbed is now being developed and it will access European funding to extend provision across private and local authority homes.