ENTSOG Gas Regional Investment Plan South 2017 - Main Report

7.1.3 MIDCAT TECHNICAL STUDIES

As stated in the 1 st Progress report of Madrid Declaration, TSOs from countries hosting the project were encouraged to further study the implementation of MidCat project. MidCat technical study was carried out by the three TSOs (Enagás, GRTgaz and TIGF). This Joint technical study lasted six months and was developed between March and August of 2015.

7.1.3.1 Methodology

The methodology defined by TSO’s for this technical study has taken two different approaches: \\ From infrastructure to capacity (STEP): setting marginal infrastructure and calcu- lating the generated capacity and its limitations. This methodology was used to evaluate the potential capacity of the First Step of MidCat (now known as STEP). \\ From capacity to infrastructure (Full): defining the set of infrastructures in order to achieve targeted capacity (230GWh/d from South to North, and 180GWh/d from North to South). Several climatic scenarios were considered for the development of the joint technical study: average winter and summer conditions, as well as a peak. In order to cover a wide range of operational conditions a ‘best case’ and ‘worse case’ were considered for every climatic scenario. The ‘Best case’ for every climatic scenario consists of assumptions on UGS utilisation and LNG terminal emissions that will determine the most favourable conditions for a given flow on MidCat interconnection (ES g FR or FR g ES). On the other hand, the ‘worst case’ consists of assumptions on UGS utilisation and LNG terminals produc- tion that will create the biggest constraint on the capacities offered at the border that can be guaranteed without making assumptions on other entry-exit points.

7.1.3.2 Definition of scenarios

7.1.3.3 Results

MidCat project In the South g North direction, the identified infrastructures generate 690GWh/d firm capacity on the French side, a third of which (i. e 230GWh/d) is dedicated to the cross-border capacity. In the North g South direction, the firm capacity generated (i. e. 160GWh/d) is

dedicated to the cross-border capacity. Its total cost is approximately M€3,100   5) .

The detailed information of the infrastructures included within this project is described in the infrastructure chapter of this GRIP South. The promoters of this project are GRTgaz and TIGF in France, and Enagás in Spain. A PS-CBA has been performed by ENTSOG within the third PCI selection process. STEP project The STEP project generates interruptible capacities at the French-Spanish border: up to 230GWh/d South g North and 180GWh/d North g South. Its total cost is approximately M€470   6) . The detailed information of the infrastructures included within this project is described in the infrastructure chapter of this GRIP South. The promoters of this project are TIGF in France and Enagás in Spain. A PS-CBA has been performed through a specific study under the umbrella of the High Level group, as part of the third PCI selection process.

 5) Joint Technical Study, July 2015  6) Joint Technical Study, July 2015

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