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Chemical reaction storage


Technology Description

This thermochemical heat storage is based on gas-gas or gas-solid reactions, by using thermal energy to dissociate compounds (“AB”) into two reaction products (“A” and “B”). Upon subsequent recombination of the reactants, an exothermic reverse reaction occurs and the previously-stored heat of reaction is released. This allows for the theoretically lossless storage of thermal energy. 95% of the installed systems are in R&D and have reached a TRL of 3-4.

Relevance for Net Zero

A higher integration of variable renewable energy will call for a flexible integration of power and heating systems, and thermal energy storage offer means to also decarobinize the heating demand, including higher-temperature heating demands.

Key Countries

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