The separation of the bidding zones of Germany (including Luxembourg) and Austria on 1 October 2018 has imposed additional tasks on the transmission system operators (TSOs) directly concerned and also on neighbouring TSOs, notably as regards congestion management. Bidding zones are areas where a wholesale electricity market price applies, and the AT-DE/LU separation resulted in increased demand for intraday cross-border capacity at the Austrian-Swiss border. The two TSCNET shareholders APG from Austria and Swissgrid, the TSO from Switzerland, have reacted to this changed market situation and introduced automated, platform-based intraday capacity allocation.
A border-specific solution was necessary because the Austrian-Swiss border cannot be integrated into Single Intraday Coupling (SIDC, originally introduced as XBID in 2018). Therefore, the intraday allocation of cross-border capacities is still carried out via explicit allocations, but now in an automated process. On 23 September 2020, with the first delivery on 24 September, telephone allocation was switched to a platform-based allocation. The IT platform used – Intraday Capacity Service (ICS) – allocates capacities in accordance with the “first come, first served” principle. After almost two weeks of automated allocation, the two TSOs consider the new, easier intraday trading procedure a success. Swissgrid has already been applying this more efficient allocation of cross-border volume on the Swiss borders with Germany and France.