NaCl is a good solar thermal storage: 150 kwhel./m3
NaCl is able to store about 150 kwhel./m3 through its heat of fusion.
The great thing is that all the heat of fusion can be taken at the same fusion temperature(about 800°C) that is much important for electric energy production...
We need a free solar energy if we want a lot of solar energy...
A lot of persons..are able to make a great solar furnace through
a big pit, using NaCl...; this energy has low costs!
If the cost of this energy is one then a person can invest in this energy without problems...
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