This paper presents a perspective for precise sunray reflection geometry in concentrating solar power (CSP) tower systems in the presence of crustal deformation. The CSP technology, based on a large field of small flat mirrors (heliostats) which track the sun with high precision, is an attractive renewable energy option in the southwestern United States and other sunbelts worldwide. In California, many areas are known to be continuously undergoing deformation due to plate boundary tectonics and human factors such as groundwater withdrawal. Dense GPS networks, InSAR technology and other instrumentation have provided meaningful long-term data to support these claims. Against this background, the paper looks at the potential role that crustal deformations might play in the long-term stability of such projects. Theoretical analyses indicate that relative crustal deformations of magnitudes as small as 0.06 m would potentially affect the dynamic angle by which the tracking mirror should rotate in order to stay on its target.
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