Latest Advances in Thermochemical Energy Storage Systems

Dear Colleagues,

Designing efficient, cost-effective, and scalable energy storage systems stands as one of the main technological challenges for the widespread deployment of renewable energy. Thermochemical energy storage (TCES) is an attractive alternative to sensible heat storage. Integrated TCES systems in renewable energy facilities, such as solar and wind power, are based on driving endothermic reactions that yield at least two separate products. These products can be stored independently and later recombined to produce heat (in an exothermic reaction) when required. Among TCES, the most studied systems are based on carbonates, hydroxides, or redox systems, although other promising alternatives exist. Currently, TCES is developed only at a laboratory scale or at kW-scale prototypes (TRL5), and some drawbacks, such as sorbent deactivation, aggregation, or inefficient integration in renewable facilities, need to be improved to scale up the technology. Regarding renewable resources, the traditional consideration of integrating them into concentrating solar power (CSP) plants is due to the potential to harness high-temperature solar energy to supply the necessary heat for the endothermic reaction. However, with the growing deployment of wind and photovoltaic farms, there is inherent potential to convert excess electricity into heat, store it for later industrial use, or even convert it back into electricity.

This Special Issue covers novel research concerning TCES. Topics of interest for publication include, but are not limited to, the following:

• TCES modelling;
• Energy integration;
• Materials properties;
• Synthetic materials testing;
• Reactors design for TCES;
• Power cycles integration;
• TCES for industrial heat;
• Economic analysis;
• Scaling-up assessment;
• Critical reviews of TCES technology.

Dr. Carlos Ortíz
Dr. Alicia Bayon
Guest Editors

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• concentrating solar power
• photovoltaics
• PV
• energy storage
• dispatchability
• energy density
• industrial heat