A cluster of eco homes using solar panels are being used to provide low cost public housing to tenants in Pembrokeshire.
They form a village called Pentre Solar and have accepted tenants from the council housing register in the county.
Residents of the six timber homes are expected to see cheaper energy bills as the properties have an A++ energy rating and solar panels producing 6,000kWh a year.
They also have access to a shared electric car.
Western Solar was granted £141,000 by the Welsh Government to establish a factory locally to manufacture the homes off site following a prototype launched in 2013.
Welsh First Minister Lesley Griffiths said: “I am delighted to officially open this innovative housing development, which is not only providing much needed housing for local people, it is also addressing many other key issues such as energy efficiency, fuel poverty, skills development and the use of Welsh timber.”