Imbalance calculation
Article 54
1. Each TSO shall calculate within its scheduling area or scheduling areas when appropriate the final position, the allocated volume, the imbalance adjustment and the imbalance: (a) for each balance responsible party; (b) for each imbalance settlement period; (c) in each imbalance area. 2. The imbalance area shall be equal to the scheduling area, except in case of a central dispatching model where imbalance area may constitute a part of scheduling area. 3. Until the implementation of the proposal pursuant to Article 52(2), each TSO shall calculate the final position of a balance responsible party using one of the following approaches: (a) balance responsible party has one single final position equal to the sum of its external commercial trade schedules and internal commercial trade schedules; (b) balance responsible party has two final positions: the first is equal to the sum of its external commercial trade schedules and internal commercial trade schedules from generation, and the second is equal to the sum of its external commercial trade schedules and internal commercial trade schedules from consumption; (c) in a central dispatching model, a balance responsible party can have several final positions per imbalance area equal to generation schedules of power generating facilities or consumption schedules of demand facilities. 4. Each TSO shall set up the rules for: (a) the calculation of the final position; (b) the determination of the allocated volume; (c) the determination of the imbalance adjustment pursuant to Article 49; (d) the calculation of the imbalance; (e) claiming the recalculation of the imbalance by a balance responsible party. 5. Allocated volume shall not be calculated for a balance responsible party which does not cover injections or withdrawals. 6. An imbalance shall indicate the size and the direction of the settlement transaction between the balance responsible party and the TSO; an imbalance can have alternatively: (a) a negative sign, indicating a balance responsible party's shortage; (b) a positive sign, indicating a balance responsible party's surplus.