This will be achieved through a mixture of improved fabric and building services standards and is likely in many situations to require renewable technologies such as solar panels.
Bydd hyn yn digwydd drwy gymysgedd o well deunyddiau a safonau gwasanaethau adeiladu, ac mae'n debygol y bydd angen technolegau ynni adnewyddadwy fel paneli solar mewn nifer o sefyllfaoedd.