This system is formidable!
It stores wind energy by means of heat of fusion of sodium chloride; every m3 of NaCl stores about 250 kwh of thermal energy through its heat of fusion, that is 100 kwh of electric energy + 150 kwh of low energy usable for heating..
Therefore all..the wind energy would be used!...

Conclusion:
it stores 250 kwh/m3 of thermal energy
1/3 of wind energy becomes electric energy and
2/3 of wind energy becomes low energy for heating..

The Heat of Fusion means the NaCL would be in solution...thw wind will not heat a solution directly.

I'm guessing you are transferring the wind energy into a solar water heating panel - there will be some thermal losses no matter how efficient a system you install.

Better yet is to place Glaubers Salts into containers to be used as thermal mass.