Storages for heat and electricityHow can heat be stored?

Heat can only be stored if a material is stored that contains it (heat transfer medium).
Sensible heat is added to a storage medium that changes its temperature as a result (e.g. water in the heating circuit of a building).
Latent heat storage works by changing the state of the storage medium (mostly from solid to liquid). For example: The same amount of energy used for melting ice into water could also be used to heat it from 0 to 80 °C. Salts are used in latent heat storage systems, for example in industry.
Thirdly, all flammable materials are chemical heat storage systems.