Keeping the Balance
Elia aims to maintain the balance on the Belgian grid in real time by making use of the market flexibility offered by Balancing Service Providers (BSPs).
Primary control reserve - Frequency containment (FCR/R1)
Providing an immediate initial response to frequency deviations across Europe.
Secondary control reserve - Frequency restoration with automatic activation (aFRR/R2)
Tertiary control reserve - Frequency restoration with manual activation (mFRR/R3)
Balancing Rules
Elia takes action to restore the balance by using balancing services in accordance with the rules for the compensation of quarter-hourly imbalances (entry into force: 1 December 2018), as approved by the regulator (also known the Balancing Rules).
When determining an imbalance within a BRP’s portfolio, Elia appliesimbalance tariffs proportional to the resources used by Elia to manage the imbalance in the control area.
Relevant documents
Dimensioning of balancing services
Elia determines the volume of balancing services that is required to keep the balance in the control area, taking into account forecast of renewable generation and the demand, as well as the risk of a dimensioning incident (for example, a sudden drop in generation following an unplanned outage of a power plant). In line with Article 213 of the Code of Conduct, Elia publishes following documents after approval by the regulator:
- the LFC block operational agreement specifying amongst others the dimensioning rules for Frequency Restoration Reserves or ‘FRR’ (also referred to as aFRR and mFRR);
- the LFC Means specifying the methodology which determines the volumes of balancing capacity for aFRR and mFRR to be procured.
