There are two main types of solar energy technologies—photovoltaics (PV) and concentrating solar-thermal power (CSP). On this page you'll find resources to learn what solar energy is; how you, your business, or your community can go solar; and find resources for every step of the. . Solar energy technologies and power plants do not produce air pollution or greenhouse gases when operating. It plays a substantial role in achieving sustainable development energy solutions. Professor of Engineering, Pennsylvania State University. Encyclopaedia. . Solar power is an environmentally friendly energy source. Learn what the sun's rays can do to power, and help preserve, the planet.
