7 Solar Technology Assessment and Appropriate Technology Options

The most commonly used solar technologies to convert sunlight to usable form of energy are solar thermal technology and solar photovoltaic (SPV) technology.

Solar thermal technology is of two types—non-concentrating and concentrating. Non-concentrating solar technologies harness heat from the sun to provide hot water or hot air. Concentrating solar thermal (CST) technologies harness heat from the sun to get high temperature fluids/steam by way of concentrators. This high temperature working fluid/steam is then used either for process heating purposes or for generating electricity.

Solar photovoltaic technology converts sunlight directly into electricity. Solar photovoltaic systems can be grid connected or off-grid depending upon the application.