In Continental Europe, the synchronised frequency is of 50 Hz. It is a core task of every transmission system operator (TSO) to keep the balance between power production and consumption and the grid frequency stable. The Swiss TSCNET shareholder Swissgrid, the national TSO, operates a market for ancillary services for this purpose. Power plants and other auxiliary service providers (ASPs) in Switzerland hold primary, secondary and tertiary control reserve capacities on behalf of Swissgrid and, in case of frequency deviations, allocate them against compensation. Primary and secondary control energy is retrieved automatically and tertiary control energy manually.
Swissgrid is constantly striving to further develop the ancillary services market with innovative solutions. These include the bundling of manually retrieved products for frequency control and for international redispatch into a single integrated market. A market platform suitable for this purpose, which enables the retrieval of both, tertiary control energy and energy for international redispatches, was successfully launched by Swissgrid last week. This is possible because the two products have the same characteristics and can be called up with the same lead time of 15 minutes.
The specifications of the platform design allow the market offers to be freely changeable. This means, above all, that there is no longer any competition between the tertiary control energy market and the intraday market. ASPs can now offer the energy not sold in the intraday market on the integrated market. Another new feature is that tenders can be processed using the communication protocol of the Energy Communication Platform (ECP) of the European Network of Transmission System Operators for Electricity (ENTSO-E), which enables direct communication between the IT systems of the ASPs and the Swissgrid bidding platform. This process automation leads to greater transparency.