I think TERI like institutes have done enough work in India to store Solar energy. Surprised to know that batteries running on SE were not charged enough to give 24 hrs hot water supply. But, my concern is not Clean Energy. More than usage of clean energy, our concern and focus should be on making it affordable, so that a common man can use it. Hope this blog is moderated....U can can delete the following in the public view Currently , it is for expats , Country Directors and RICH highly paid World Bank India Staff.