ADEX brings Slovenia, Hungary and Serbia into a common intraday trading platform

The ADEX Group has launched a shared continuous intraday trading environment linking the Slovenian, Hungarian and Serbian power markets. The platform went live on October 20, following testing and migration involving the three exchanges, market participants and project partners. The launch marks another step towards deeper integration of Central and Southeastern European power trading.

Shared operations and trading infrastructure

Under the new arrangement, Slovenia’s BSP has taken over operational activities for ADEX’s intraday continuous markets. BSP will serve as the central operational contact for participants across the three exchanges. The expanded role builds on BSP’s experience in operating organised electricity markets.

The platform brings ADEX’s intraday markets into a common M7 trading environment, standardising several technical and operational processes. Participants will continue to trade only in the individual markets where they are admitted. The shared framework is intended to simplify daily operations, harmonise trade-limit management and provide more consistent conditions across BSP, HUPX and SEEPEX.

Trading conditions and market integration

For traders, the development is less about creating a single regional price and more about improving the speed and consistency of intraday trading. This comes as renewable generation increases and balancing requirements become more demanding. ADEX said the integration should also support more efficient market operations and provide participants with a unified technical interface for intraday activity.

The arrangement strengthens institutional links between the three markets, which frequently record significant price differences. Transmission bottlenecks and differing generation balances contribute to those differences. Whether closer operational integration can support deeper liquidity and more efficient short-term balancing between Slovenia, Hungary and Serbia remains to be seen, while physical interconnection constraints continue to limit full price convergence.

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