Energies · 2020 · 155 citations · 77 references
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Thermal energy storage systems enhance integration of diverse energy sources, providing flexibility, improved renewable utilization, and cost‑effective grid services toward a cleaner, more sustainable energy infrastructure. This review surveys current literature on TES solutions for grid‑connected systems, offering a complementary perspective to existing studies on energy storage, TES materials, building applications, and electrical storage contributions. The review examines TES characteristics, parameters, and models, their deployment in variable‑renewable, microgrid, and multi‑energy network contexts, and emerging application trends.
Thermal energy systems (TES) contribute to the on-going process that leads to higher integration among different energy systems, with the aim of reaching a cleaner, more flexible and sustainable use of the energy resources. This paper reviews the current literature that refers to the development and exploitation of TES-based solutions in systems connected to the electrical grid. These solutions facilitate the energy system integration to get additional flexibility for energy management, enable better use of variable renewable energy sources (RES), and contribute to the modernisation of the energy system infrastructures, the enhancement of the grid operation practices that include energy shifting, and the provision of cost-effective grid services. This paper offers a complementary view with respect to other reviews that deal with energy storage technologies, materials for TES applications, TES for buildings, and contributions of electrical energy storage for grid applications. The main aspects addressed are the characteristics, parameters and models of the TES systems, the deployment of TES in systems with variable RES, microgrids, and multi-energy networks, and the emerging trends for TES applications.
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