The Schedules can be submitted to the Interchange Scheduling Section of PSE S.A. in three time horizons: weekly, daily and supplementary (related to daily auction). The weekly time horizon allows the Market Participants to send the preliminary version of the day ahead schedule one week before the day of the realization. These schedules are based on the allocated capacity from the yearly and monthly auctions. If Market Participant sends the schedule only in this manner then the schedule will be handled as his final scheduling position. The main way to submit the day ahead cross border schedules is the daily time horizon. In this mode Market Participants can submit the more exact version of the schedule. These schedules are based on the allocated capacity from the yearly and monthly auctions as well. The supplementary mode allows the Market Participants to submit the schedules based on the capacity rights form the daily auctions. The exact time horizons as well as the gate closures for each scheduling mode are described in details in the Instruction of Transmission System Operation and Maintenance.
ProcedureOnce the schedules are submitted to PSE S.A. they are verified and validated by the IT scheduling system. As the result of this process the Acknowledgement is sent to each of Market Participants. In the subsequent process PSE matches the schedules on the borders with adjacent Transmission System Operators (TSOs). Once the schedules are matched and confirmed between the TSOs the Confirmations are sent to each of Market Participants.