2.2. Congestion management procedures in the event of contractual congestion

2.2.1.   General provisions

2.2.2.   Capacity increase through oversubscription and buy-back scheme

2.2.3.   Firm day-ahead use-it-or-lose-it mechanism

2.2.4.   Surrender of contracted capacity

Transmission system operators shall accept any surrender of firm capacity which is contracted by the network user at an interconnection point, with the exception of capacity products with a duration of a day and shorter period. The network user shall retain its rights and obligations under the capacity contract until the capacity is reallocated by the transmission system operator and to the extent the capacity is not reallocated by the transmission system operator. Surrendered capacity shall be considered to be reallocated only after all the available capacity has been allocated. The transmission system operator shall notify the network user without delay of any reallocation of its surrendered capacity. Specific terms and conditions for surrendering capacity, in particular where several network users surrender their capacity, shall be approved by the regulatory authority.

2.2.5.   Long-term use-it-or-lose-it mechanism