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Long duration energy storage (LDES) plays a crucial role in enabling the world to harness renewable energy efficiently. Electrochemical energy storage technologies have been deployed at ever greater capacities but is often hampered by high cost and limited mineral resources. Thermal energy storage (TES) has the potential to be an economical and location-independent technology for LDES. TES stores energy in the form of heat in low-cost materials. A dynamic TES simulation tool within Flownex was developed and used to compare the economic viability of a TES gas turbine cogeneration system with a lithium-ion (Li-ion) battery system to deliver the same output. An economic comparison for both systems over a 30-year project life shows the benefit of TES for LDES.

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Thermal Energy Storage Model for Hybrid Energy System Analysis

  • 会议论文

  • 发表日期：

    2026年

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  • Frikkie Botha,
  • Willem le Roux

摘要

Long duration energy storage (LDES) plays a crucial role in enabling the world to harness renewable energy efficiently. Electrochemical energy storage technologies have been deployed at ever greater capacities but is often hampered by high cost and limited mineral resources. Thermal energy storage (TES) has the potential to be an economical and location-independent technology for LDES. TES stores energy in the form of heat in low-cost materials. A dynamic TES simulation tool within Flownex was developed and used to compare the economic viability of a TES gas turbine cogeneration system with a lithium-ion (Li-ion) battery system to deliver the same output. An economic comparison for both systems over a 30-year project life shows the benefit of TES for LDES.