In principle, thermal-solar should be cheaper than PV, but rapid progress in PV has outpaced solar-thermal. This may be a case of the second-best technology beating the best because of government subsidies and widespread interest and participation in the development. See:
http://www.renewableenergyworld.com/rea/news/article/2011/09/solar-shakeout-continues-stirling-energy-systems-files-for-chapter-7-bankruptcy - Jed
