Concentrating solar thermal power technologies
(CSP) are based on the concept of concen-trating solar radiation to be used for electricity generation within conventional power cycles using steam turbines, gas turbines or Stirling engines. For concentration, most systems use glass mirrors that continuously track the position of the sun. The concen¬trated sunlight is ab-sorbed on a receiver that is specially designed to reduce heat losses. A fluid flowing through the receiver takes the heat away towards the power cycle, where e.g. high pressure, high tem-perature steam is generated to drive a turbine. Air, water, oil and mol¬ten salt are used as heat transfer fluids.