Solar water heaters require only a one-time investment, after which there are no running costs, writes Deepti Adlakha Solar solutions: It is important for people to recognise the underlying potential of solar energy. The recent fuel crisis has created an urgent need to examine and opt for alternate sources of energy. Buildings could be one of the places to begin this rethinking and given the tropical location of this country, solar energy offers itself as a clean and viable option.