CWA 18385:2026

This CWA defines a semantic framework for modelling, integrating, and optimizing Thermal Energy Storage (TES) systems within modern energy ecosystems. It supports data harmonization and semantic interoperability between TES components and energy management systems.
This CWA addresses small to medium-scale TES systems, as applied in building and district-level energy systems. Larger TES installations are outside the main scope, although the semantic framework may be extended in the future. Industrial process heat applications are excluded from the current scope and identified as future work.
NOTE The document provides a state-of-the-art description aligned with the scope of the HYSTORE Horizon Europe project, focusing on the “All-in-One Solution” for latent TES and zeolite-water sorption for TCM TES. This represents a specific initial use case and may not fully cover other PCM and TCM based TES systems. Therefore, the ontology is designed to be extensible, providing future expansion of its abstraction level and domain of application.