ENTSOG Gas Regional Investment Plan South 2017

100 / 118

100 | Gas Regional Investment Plan of the South Region 2017
Image courtesy of Reganosa
7.2.2 N-1 INFRASTRUCTURE ASSESSMENT
(FROM TYNDP 2017 ESW-CBA)
ENTSOG includes the N-1 indicator in the TYNDP assessment: this indicator derives
from Regulation (EC) 994/2010. It aims at identifying which countries are not able
to satisfy/meet its peak demand (1 in 20) without the larger infrastructure of the
country.
N-1 (ESW-CBA) indicator shows security of supply needs for countries with values
below 100%. Portugal is the only country in the South Region not fulfilling for all
scenarios the N-1 requirements.
The PCI 3rd Interconnection point PT-ES would mitigate the results for N-1 indicator
in Portugal for all demand scenarios as it can be seen in the figure below from 2025
for Green Revolution scenario.