ancillary services
PICASSO
TransnetBW GmbH is publishing data related to the cross border activation of aFRR within the PICASSO project. In particular, data related to the cross-border marginal price per control area, exchanged aFRR volumes and reasons for bid unavailability are published.
Exchange of secondary operating reserve
Joint platform
TransnetBW GmbH is publishing data related to the cross border activation of aFRR within the PICASSO project. In particular, data related to the cross-border marginal price per control area, exchanged aFRR volumes and reasons for bid unavailability are published.
The Platform for the International Coordination of Automated Frequency Restoration and Stable System Operation (PICASSO) is the implementation project endorsed by all TSOs through the ENTSO-E Market Committee to establish the European platform for the exchange of balancing energy from frequency restoration reserves with automatic activation or aFRR-Platform, pursuant to Article 21 of the Commission Regulation (EU) 2017/2195 of 23 November 2017 establishing a guideline on electricity balancing (EB GL).
PICASSO
TransnetBW GmbH
Simon Remppis
System balance
Ohmstraße 4
73240 Wendlingen, Germany
Until the accession of the respective TSO to the aFRR-Platform, Test-Data is published
- CEPS acceded the Platform on June 1st 2022
APG, 50Hertz (50HZT), TenneT Germany (TTG), Amprion (AMP) and TransnetBW (TNG) acceded on June 22nd 2022
Electricity Balancing Guideline (EB GL)
Implementation framework
Cross-Border Marginal Prices (aFRR IF, Art. 3.16)
Based on the implementation framework, the cross border marginal price (CBMP) has to be published per market time unit (MTU). The MTU is related to the optimization cycle (4 seconds). The CBMP is defined in positive and negative direction. If the aFRR in a control area is in one direction, the CBMP in the opposite direction is not defined and is published as n.A. If there is no aFRR activation within an uncongested area, the CBMP is published with the same value in positive and negative direction.
Besides the CBMP also the LMP is published (Local Marginal Price, local refers to German). The LMP is relevant for the settlement of bids from the German aFRR market in exceptional cases.
Exchanged Volumes (aFRR IF, Art. 3.16)
Based on the Implementation Framework the exchanged aFRR volumes for each control area are published using the same resolution as the optimization cycle (OC). This resolution is 4 seconds.
Reasons for Changes to Bid Availability (aFRR IF, Art. 9.8)
Any time before the TSO energy bid submission gate closure time and only when, after the TSO energy bid submission gate closure time, new information becomes available to a participating TSO that affects the possibility to activate the standard aFRR balancing energy product bids, the participating TSO may modify the bids in accordance with Article 29(9) of the EB Regulation or change the availability status of the bid in accordance with Article 29(14) of the EB Regulation.
Elastic Demand (ACER decision 8/2024)
To ensure transparency of using the elastic aFRR demand, each TSO using elastic aFRR demand shall publish, as soon as possible after the use of the elastic demand,
- the power threshold of its elastic aFRR demand,
- the price of its elastic aFRR demand and,
- if applicable, information on the deviation from the power threshold.
Note: Data for ELIA before 26.11.2024, 11:00 is only used for testing purposes.
Data for RTE before 01.04.2025, 10:00 is only used for testing purposes.