automatic Frequency Restoration Reserve
The automatic Frequency Restoration Reserve (aFRR) covers small system imbalances. Providers of automatic Frequency Restoration Reserve offer services automatically as requested. automatic Frequency Restoration Reserve activates to decrease the use of primary control reserve.
Historical development of automatic Frequency Restoration Reserve
Since December 1, 2007, the German TSOs have been procuring their secondary control reserve demands via a joint tender on the internet platform regelleistung.net. This platform provides tenders, the submission of bids, and informs bidders of allocations and rejections.
On 18/10/2011, the market design that applied until then was revised for the first time and updated again on 13/06/2017. The new market design was introduced in two stages as of 12/07/2018 and 12/07/2019.
As of 02.11.2020 (delivery date 03.11.2020) the balancing energy market was introduced with separate procurement of balancing capacity at the balancing capacity market and balancing energy at the balancing energy market.
The introduction of the balancing energy market is the national basis for the European domestic market for control reserve and corresponds with the requirement in article 16 (5) EB-VO. At the end of the tendering of balancing capacity the BSPs have the possibility to adjust the accepted bids and/or can offer new bids.
The design of the balancing energy market is outlined in § 38 of the modalities for BSPs (MfRRA).
Overview of current business rules: