In recent years, much effort has been devoted to creating and developing innovative technologies in the field of solarised water treatment technologies and the future is promising. In Kenya, solar energy is an abundant and a widely untapped resource whose estimated daily insolation is 4-6KWh/m2.

The use of solar energy in photovoltaic (PV) systems for lighting, water heating and solar water pumping is rapidly gaining popularity due to its availability, reliability, efficiency and quick payback periods.

Solar-powered reverse osmosis plants are among the technologies being fronted as the sustainable solution to water scarcity in not just Kenya but the world over and especially at a time when an estimated 2.1 billion people still lack access to safely managed drinking water services, according to a report by WHO and Unicef; with the largest proportion coming from ‘Third World’ countries.