A precondition for taking part in a joint tender is the conclusion of a framework contract between the BSP and connecting TSO following successful pre-qualification, whereby the total prequalified manual Frequency Restoration Reserve of a provider must be at least 1 MW.
The connecting TSO is the TSO in the control area of which the technical units to be marketed by the BSP are connected to the grid, irrespective of the voltage level. This TSO conducts the pre-qualification procedure for technical units (e.g. generating units, controllable consumer loads or storage) in its control area and is the contract party of the BSP whose technical units are located in the control area of the connecting TSO. If a BSP markets technical units in several control areas, a framework agreement has to be concluded with all respective connecting TSOs.
Each BSP has its own secure area for the submission of offers and access to the allocation results on the Internet platform. The next-day tendering procedure takes place each calendar day.