Could this be Wales' most energy efficient building?

A building billed as the "most sustainable" in Wales is opening its doors to the public for the first time.

Hen Ysgol in Pencader, Carmarthenshire was originally a Victorian school, but it's since been transformed into a training centre, business and home by owners Jayne and Ian Hall-Edwards.

The project took six years to complete, and owners Ian and Jayne received a £67,500 grant from the Welsh Government's Economic Growth Fund.

They also received a further £80,000 repayable business finance loan from the Welsh Government, and invested over £440,000 of their own money.

The property, which has featured several times on Channel 4 programme The Restoration Man will open to the public on Friday 26th August, with the aim of inspiring other people to live, build and work more sustainably.

Its features include biomass boilers and room heaters, intelligent thermal stores, pumps which extract heat from the air, and wood stoves and fires.

The building also has a green roof, rain water harvesting, under-floor heating and low energy lighting technologies; all of which, according to the owners, link together to save energy and money.

Owners Ian and Jayne with The Restoration Man's George Clarke Credit: Luminous Media
The building was once an old Victorian school and was restored over six years Credit: Luminous Media

As well as a home and a base for the Hall-Edwards' company 'Totally Sustainable', the building will also be used as a training centre, offering accredited courses to tradespeople, architects and members of the public to learn about sustainable technologies.