Non-Photovoltaic Use of Solar Energy
http://www.youtube.com/watch?feature=
endscreen&v=8xFe91lMRH0&NR=1
Many technologies are available to use the sun other than photovoltaics ranging from solar water heaters to solar chimneys.
Solar Green House
http://www.youtube.com/watch?v
=m0r2B24hPmw
Biomass Plant
http://www.youtube.com/watch?v=
BiHDQClpZfI Home Biogas
http://www.youtube.com/watch?v
=3th2bcqHbsk Home Biogas in India