50Hertz Logo linking to 50Hertz Website Amprion Logo linking to Amperion Website TenneT Logo linking to TenneT Website TransnetBW Logo linking to TransnetBW Website
Header image of a transmission tower

manual Frequency Restoration Reserve

manual Frequency Restoration Reserve

The manual Frequency Restoration Reserve covers bigger system imbalances. It is requested manually by the TSO and should decrease the need form automatic Frequency Restoration Reserve.

Historical development of minute reserve

DateDevelopment of the manual Frequency Restoration Reserve
01.12.2006The German TSOs procure their requirements for manual Frequency Restoration Reserve via a joint invitation to tender on the Internet platform regelleistung.net. This platform is also used to publish the invitation to tender, process the submission of bids, and inform all bidders of awards or rejections.
12.07.2018Introduction of the calendar day tender.
12.07.2019Introduction of cross-rule-zone collateralization
03.11.2020Introduction of the control reserve market (RAM), which for the first time involves separate procurement of control reserve on the control reserve market (RLM) and control reserve on the RAM.

Overview of current business rules:

Capacity MarketGate-Opening-Time: 10 o'clock, d-7

Gate-Closure-Time: 10 o'clock, d-1

Product length: 4 hours
Energy MarketGate-opening-Time: approx. 12 o'clock, d-1

Gate-Closure-Time: t-25

Product length: 15 minutes
Core ShareCountries provide the core share and cross border capacities, no core share within Germany
Minimum offer capacity1 MW
PoolingPossible within control area
Indivisible offerIndivisible offer possible
ActivationAutomatic activation of manual Frequency Restoration Reserve by the common Merit Order List Server (MOLS)
Activation periodFull activation within 15 minutes
BackupBackup possible
Symmetrical/AsymmetricalAsymmetrical

The bidding takes place every calendar day.

Additional information

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.