Here's a new energy source for your home that doesn't require initial passive solar design: utilize your roof to capture heat for your home through glass tiles. This new heating system by Soltech Energy uses glass roof-tiles to heat your home using the sun's energy.
Debuted at Nordbygg 2010 trade fair in Stockholm, Sweden, Soltech Energy's heating system features roof tiles made out of glass. The tiles are transparent but are backed by a special black absorption fabric for privacy. Depending on the climate, roof angle and house direction, the system can generate around 350 kWh heat per square meter of roof.
The tiles are made from ordinary glass and weigh about the same as clay roof tiles. The system works by allowing the sun light to heat air underneath the tiles and then heats either air or water, which is then circulated into your home.