Skip Ribbon Commands
Skip to main content


In the context of the South Gas Regional Initiative, the Transmission System Operators Enagas (Spain), REN (Portugal) and TIGF (France) have been asked to establish a joint and coordinated oversubscription and buy-back (OSBB) scheme.

The present document, finalised in April 2016, describes in detail the coordinated implementation of the OSBB scheme at the cross-border interconnection points between Portugal and Spain (VIP Ibérico), and between France and Spain (VIP Pirineos).