*Due to the fact that there is a shortage of MCS certified battery installers, batteries must be installed by a contractor registered under a relevant Competent Persons Scheme (eg.
* Oherwydd bod prinder gosodwyr batri sydd wedi harchredu gan MCS, rhaid i fatris gael eu gosod gan gontractwr sydd wedi'i gofrestru o dan Gynllun Personau Cymwys perthnasol (eg.