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CRESYM is a non-profit association, gathering industrial & academic research organisations and aiming at solving the coming challenges for the future, fast-evolving European energy system.

We foster collaborative R&D works to deliver opensource energy system simulation tools

We foster efficient collaborations on low-TRL R&D issues of general interest.
We promote, and rely on, opensource principles.
We shall maintain useful technological building blocks available for all researchers & engineers.

Ongoing projects


Harmony is a toolkit for easy harmonic analyses of (local EMT), to assess multi-terminal HVDC power systems, TSO-DSO interface, controller interoperability and HVDC protection

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Complementary to other related research (interOPERA, HVDC-wise, etc.), Inter-oPEn investigates how openness (“whiteboxes” especially) can unlock interoperability issues of power electronic (PE) devices in power systems, marrying both technological and legal aspects. The project is sponsored by EC’s Horizon Europe program

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Restoration aims at exploring the advantages and disadvantages of power-electronics interfaced components during network restoration procedures, and to outline recommendations for BESS-based restoration plans.

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