Decentralised generation and increased electrification require TSOs to adapt and support a market expansion with a focus on ‘One-System of Integrated Systems’ centred around optimised cross-sectoral integration. Coordination between TSOs, DSOs, market participants, and customers must go beyond mere integration of markets and operations and expand into proactive planning.

Future market integration requires increased grid capacity, optimisation, and integration of new technologies. As a mid-term goal, the transmission grid will have to transport higher volumes of renewable electricity over long distances; hence, embedding controllable devices and control systems in the cross-border infrastructure will ensure that resource management can be optimised.

Large penetration of power electronics, further digitalisation, and stronger connectivity require TSOs to take further actions to ensure the technical soundness of the cyber-physical power systems. System resilience, security, stability, and restoration after a black-out are and must remain the primary mandate of TSOs. In the short-term securing the interoperability of grid components, both hardware and software, is a high-priority task.