THE INTEGRATION OF INDIVIDUAL ELECTRICITY MARKETS REQUIRES STRONGER COORDINATION AMONG TSOs

Abstract – TSOs are responsible for maintaining system security. For international trade, this requires coordination among TSOs. One of the existing tools is the NTC calculation for estimating available cross-border transmission capacity, while different methods are used for allocation of this capacity. Day-ahead data exchange between neighbouring TSOs allows estimating the probability of congestions. These methods have to be further developed. Examples illustrate the occurrence of high-risk network situations in the Northwestern European network. Growing market pressure, shorter time-scale trading, increased wind production, the wish to fully exploit any new grid elements and most of all the need for a true integration into a single European market for electricity will further increase the need for a better and deeper coordination between TSOs