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Artelis describes Europe’s CoreNet common grid model: open‑source merging to improve interregional coordination
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Summary
Artelis presented the CoreNet Common Grid Model (CGM) service — a merging function that ingests individual TSO grid models, validates and topologically merges them, and scales AC net positions to interchange schedules; the implementation uses the open‑source Possible framework under Linux Foundation Energy.
Gladys Leon, director at Artelis, described a production implementation of a pan‑European Common Grid Model (CGM) service developed under the CoreNet program and operational regional coordination Centers (RCCs).
Leon said the CGM service takes Individual Grid Models (IGMs) from about 40 TSOs, validates each IGM with load‑flow checks, assembles and topologically merges boundary nodes, and then runs an iterative scaling algorithm that adjusts conforming loads so the merged AC net positions match interchange schedules. She emphasized that the CGM go‑live occurred in December of the prior year and that the CGM is the foundation for other coordinated RCC services such as coordinated security analysis.
Artelis implemented the European merging function using the Possible (Power System Blocks) open‑source framework and a partner IT platform. Leon said open‑source tooling and standardized formats reduce development and maintenance costs and improve transparency for TSO coordination. She identified data quality and inconsistent format adoption as the main operational challenges and suggested that the U.S. could reuse European lessons for large‑scale coordination, noting scale differences.
Questions from FERC policy staff focused on data quality and differences between European and U.S. governance models; Leon reiterated that open standards and careful data validation are essential, and she said coordinated security analysis (a separate CoreNet service) is expected to go into production in 2028.
