25 Tymor
230 Pennod
Grand Designs - Season 21 Episode 4
Energy conservationist Andrew plans to build a radical, self-heating home by storing the warmth of the summer sun into insulated earth banks. But will this gigantic thermal experiment work?
- Blwyddyn: 2023
- Gwlad: United Kingdom
- Genre: Documentary
- Stiwdio: Channel 4
- Allweddair: house, architecture
- Cyfarwyddwr:
- Cast: Kevin McCloud