On 29 October, a joint workshop brought together MEDREG and Med-TSO members to explore the role of Guarantees of Origin (GOs) in facilitating green electricity trading across the Mediterranean. The event featured expert presentations, case studies, and practical recommendations based on real-world implementation, aiming to strengthen collaboration and mutual understanding between regulators and system operators.

In the first session, MEDREG representatives presented their ongoing report on green electricity trading in the Mediterranean region, which provides an overview of the EU framework, the implementation of renewable energy certificates, and experiences with Guarantees of Origin across different countries. The report, expected to be published early next year, seeks to harmonise standards and definitions across European and non-European countries, with particular attention to certification of origin and regulatory frameworks.

This overview was complemented by national case studies presented by the energy regulatory authorities of Jordan, North Macedonia, and Portugal. EMRC (Jordan) outlined the regulatory challenges and opportunities it faces for GO market development in the Mediterranean region, while ERC (North Macedonia) shared its experience with the implementation of Guarantees of Origin. ERSE (Portugal) presented its system for monitoring and controlling Guarantees of Origin, highlighting its role as a supervisor of labelling and disclosure rules.

In the second session on Technical Implementation and National Experiences, Med-TSO highlighted the evolution of the Guarantee of Origin system from a consumer recognition tool to an essential instrument for integrating renewables into the grid. The TSO association emphasised the need for interoperability between EU and MENA systems, proposing a four-step roadmap to achieve this objective.

Finally, the discussions addressed the implications of the Carbon Border Adjustment Mechanism (CBAM) for cross-border electricity trade, with concerns raised about the treatment of renewable energy certificates and the need for clear regulatory frameworks. The conversation concluded with an agreement to further explore the interplay between CBAM, ETS schemes, and Guarantees of Origin, in support of broader decarbonisation efforts in the region.