In a technical sense, that would depend in part on the salt. If a salt with a higher melting point existed then it could be stored at a higher temperature. I’m

In a technical sense, that would depend in part on the salt. If a salt with a higher melting point existed then it could be stored at a higher temperature. I’m not meaning to “correct” your statement, because the actual practicalities of these systems Is not my expertise and there may be other much more significant factors to consider