This The Spanish plant, and others like it, are what is called a power tower arrangement. The liquid salt is stored in a huge underground tank, and a small amount of liquid salt is circulated to the top of the tower, then heated and returned to the tank in a continuous loop. Its a very technically complicated process with lots of moving parts, such as valves and pumps. There are expensive filters which wear out, seals which wear out, expansion and contraction from heating and cooling which causes massive strain on the whole system the length of a pipe will change dramatically when you heat it, for example. The system described above is a VASTLY simpler system, if it performs as advertised. They are basically heating the salt directly in the storage tank, therefore eliminating the most complicated parts. Its really brilliant. -265 By using less energy, you reduce the amount of pollution and greenhouse gasses that are created in the production of electricity and the fuels we burn. You can feel good about the energy and money youre saving because youre doing your part for the environment. "home energy monitor labview " and "magnetic field motors " (include "how to make a windmills", "entegrity wind turbine ", "how to make solenoids ", "home energy wind turbine ", "home energy power monitor ", "National home energy efficiency program ", 14 Jan 2010 Every once in a while we're given insights to systems that could be game changers and while not apparently sexy at the moment, & How to make a solar hotdog cooker )