a new way to capture solar energy, page-11

This is exactly why solar energy can provide baseload power, Hanrahan et al, if you are reading. According to Wikipedia "The Andasol power plant in Spain is the first commercial solar thermal power plant to utilize molten salt for heat storage and nighttime generation. It came online March 2009.[62]"

http://en.wikipedia.org/wiki/Solar_thermal_energy#cite_note-61

Andasol phase 3 currently under construction, so one can only assume phases 1 and 2 were successful.

[62] http://www.solarmillennium.de/front_content.php?idart=155&lang=2