Thermochemical storage: Overview

Storing heat as chemistry so it keeps for a whole season

What this tile covers Reversible reactions that soak up heat and give it back later. Share of use <.01% share of world stored energy (2024)

Share of the world's stored energy (energy capacity held, TWh, latest year 2019 to 2026) across the forms with figures, about 22,551 TWh; fuel stocks dominate. Battery and other stores count capacity, not state of charge Pilot scale only; the SaltX pilot of 0.5 MW / 10 MWh is used as the order of magnitude. Near zero.

Key facts

Duration

Days to seasons

Included from the reference tables

Metal oxides
Salt hydrates
Calcium looping

Also in Chemical

H2S Hydrogen storage NH3 Ammonia, methanol and e-fuels SPR Fuel stocks and strategic reserves BmS Biomass and biofuel stores Exp Explosives and propellants

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