Παρ, 8 Φεβρουαρίου 2008 - 01:23
Savvas Diamantaras has lived in the Solar Village in Pefki, northern Athens, for 18 years and his two-story detached house is heated by a system in which the solar energy is trapped in a greenhouse and stored in walls of water on all south-facing ground-floor walls and about half the surface of south-facing walls on the first floor.