Elia invoices the Imbalance Tariff for any imbalance found in the balancing perimeter of the Balance Responsible Parties (BRPs). This is done on a quarter-hourly basis
Depending on the sign of the imbalance of a given BRP, the Imbalance Tariff reflects a purchase tariff or a sale tariff:
- In case of positive imbalance, corresponding to an energy surplus, the Imbalance Tariff reflects a purchase tariff which means it is paid by Elia to the BRP if it is positive;
- In case of negative imbalance, corresponding to an insufficient injection, the Imbalance Tariff reflects a sale tariff which means it is paid by the BRP to Elia if it is positive.