Cyn symud i Rhiw Cefn Gwlad roedd y teulu'n gwario tua £250 y mis ar drydan a nwy ar gyfer gwresogi, golchi a sychu. Mae eu taliadau wedi lleihau'n sylweddol diolch i'r technolegau sydd wedi'u cynnwys yn y cartrefi.
Before moving to Rhiw Cefn Gwlad the family were spending around £250 per month on electricity and gas for heating, washing and drying. Their payments have been drastically reduced thanks to the technologies built into the homes.