Schlumberger Energy Institute Solar | Page 4

CSP is one of the 4 main direct solar energy technologies Solar technologies are broadly characterized as either passive solar or active solar depending on the way they capture, convert and distribute solar energy. 1. Concentrating Solar Power (CSP) Electricity generation via direct conversion of sunlight to electricity by photovoltaic cells (PV). 3. 2. Solar Photovoltaic (PV) Electricity is generated by the optical concentration of solar energy, producing high-temperature fluids or materials to drive heat engines and generators. 4. Solar Thermal Solar fuels Solar panels made up of evacuated tubes or flat-plate collectors heat up water stored in a tank. The energy is used for hot-water supply. Solar Fuel processes are being designed to transform the radiative energy of the sun into chemical energy carriers. Active solar techniques include the use of photovoltaic panels and solar thermal collectors to harness the energy. Passive solar techniques include orienting a building to the Sun, selecting materials with favorable thermal mass or light dispersing properties, and designing spaces that naturally circulate air. 4 | slb.com