This video is about Gemasolar, near Seville, Spain – the first Concentrated Solar Thermal Power plus molten salt storage (CSP+) plant to produce energy 24 hours per day. This power tower plant produces 20MW, enough to power 25,000 homes. Just look how amazingly the tower shines!
The secret behind this lies in the fact, that solar energy is gathered by mirrors to light the top of the tower, which subsequently heats the salt. Salt storage works as a giant thermal battery that provides heat to move steam engine. Smart.
However, I see one issue here: the size that has to be occupied by this plant. It is quite huge considering the fact that electricity is being provided to 25000 homes..
Just to compare I put two areas that shows approximate needed space for this kind of plant and 25 000 houses.