"This step fosters the energy transition and the consolidation of the fragmented markets and serves as facilitator to rollout the pan-European Market Coupling in the future. For market participants this means new access to a one-stop shop for trading and clearing in Slovenia, Serbia, and Hungary," Adex Group said in a statement, adding it becomes the most liquid spot power trading hub in this geographical area.

"Following the approvals by the relevant authorities, the go-live of the enlarged Adex Group is expected to happen in the second half of 2024," it added.