Also some amount of energy may be stored in soil due to change of chemical (also only physical) structure of some compounds appearing there. Silicates, ferric oxide, alpha, beta exotermic and endotermic crystal structure modification changes, water of crystallization amount changes (dehydratation) and other similar reversible thermochemical changes.
Pia baadhi ya kiasi cha nishati inaweza Kuhifadhiwa katika udongo kutokana na mabadiliko ya kemikali (pia tu kimwili) muundo wa misombo baadhi walitokea huko. Silikati, ferric oxide, alpha, beta na exotermic endotermic mabadiliko muundo kioo muundo, maji mabadiliko ya kiasi cha crystallization (dehydratation) na nyingine kubadilishwa thermochemical mabadiliko Sawa.