The home has a built in photovoltaic power supply, which uses sunlight to generate electricity.
The company behind the project says the house produces excess energy that can be fed back into the electricity grid, potentially earning its occupants up to £1,000 a year.
- The windows are triple-glazed. The house is thoroughly insulated through out and features low-power LED lighting.
More top news
Around £3.4m is to be invested in major transport infrastructure projects in Carmarthenshire.
A husband tied his wife's body to a heavy kitchen sink before throwing her into a reservoir where she lay for nearly 20 years.
ITV Wales explores the pros and cons of online dating and asks can a person's profile be a match for real life?