Thermal solar is a cutting edge way of doing the old-fashioned chore of boiling water to push a turbine. The Gemasolar plant in Spain's Andalucia province differentiates itself by storing heat in molten salt to keep the turbine going at full speed 15 hours after sundown. This almost completely eliminates what is probably the biggest drawback of solar: its intermittency.
Summary
A very cool and upcoming technology shown clearly with excellent, simple explanatory graphics.
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