1.1 Green Energy Technologies
Green energy is renewable and sustainable. It is renewable because it does not deplete easily and is
obviously replenished. Solar, hydro, wind, geo thermal, bio fuels and tidal power are some of the green
energy sources that can be used as an alternative to our conventional sources of energy. Specifically the
solar energy technologies produce electricity from the energy of the sun. However, the energy recurring
from solar through two significant modes of technologies one is solar Photovoltaics and another solar
thermal collectors.