A survey of hitherto concepts for cost reduction of heliostats is given. The survey might serve as a base for the development of low cost heliostats that are needed to meet the current challenging cost objectives. The concepts are related to the main heliostat subfunctions and to basic approaches for cost reduction found so far. Based on the main advantages and drawbacks of every concept, the most promising ones are indicated.

Issue Section:
Technical Briefs
Keywords:
heliostat, cost reduction, central receiver, solar tower
Topics:
Bearings, Mirrors, Solar energy, Stress, Wind, Weight (Mass), Levers, Torque, Cables, Hydraulic drive systems

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