ENTSOG TYNDP 2017 - Annex F - Methodology

Annex F Assessment Methodology

4.1 CAPACITY-BASED INDICATORS

Capacity-based indicators 4.1. Import Route Diversification (IRD) 4.1.1.

This indicator measures the diversification of paths that gas can flow through to reach a Balancing Zone in an EU country, or a non-EU country that is part of the TYNDP perimeter. Together with the Supply Source Price Diversification, it provides a proxy to the assessment of counterparty diversification. This indicator m as res the divers ficat on o paths that gas can fl w through to reach a B lancing Zone in an EU country, or a non-EU country that is part of the TYNDP perimeter. Together with the Supply Source Price Diversification, it provides a proxy to the assessment of counterparty diversification. IRD = ∑ (∑ % ) 2 + ∑ (∑ % ) 2 The below shares are calculated in comparison with the total entry firm technical capacity into the Balancing Zone from each adjacent Balancing Zone or country part of the TYNDP perimeter, from each import source, and from each LNG terminal: > IP k Xborder i : the share of the firm technical capacity of the interconnection point IP k belonging to the border with the Balancing Zone or the non-EU country part of the TYNDP perimeter > IP i from source j : the share of the firm technical capacity of the import point IP i coming directly from the source j (e.g. offshore pipeline). > LNG terminal m : the share of the firm technical send-out capacity of the LNG terminal m For Interconnection Points between Balancing Zones and/or non-EU countries part of the TYNDP perimeter, capacity is first aggregated at Balancing Zone or country level 7 , as those physical points are likely to largely depend on common infrastructures. LNG terminals are considered as completely independent infrastructures. The below shares are calculated in comparison with the total entry firm technical ca- pacity into the Balancing Zone from each adjacent Balancing Zone or country part of the TYNDP perimeter, from each import source, and from each LNG terminal: \\ IP k Xborder i : the share of the firm technical capacity of the interconnection point IP k belonging to the border with the Balancing Zone or the non-EU country part of the TYNDP perimeter \\ IP i from source j : the share of th firm technical capacity of the import point IP i coming directly from the source j (e. g. offs ore pipeline). \\ LNG terminal m : the share of the firm technical send-out capacity of the LNG terminal m For Interconn ction Points between Balancing Zones d/or n -EU countries part of the TYNDP perimeter, capacity is first aggregated at Balancing Zone or country level 1) , as those physical points are likely to largely depend on common infrastruc- tures. LNG terminals are considered as completely independent infrastructures. The lo er the value, t tt r t i r ifi ti i . ) 2 +∑ (% The lower the value, the better the diversification is.

4.1.1 Import R ute Diversification (IRD)

7 In France, FRs and FRt are treated as one zone (TRS). The results for this zone are relevant for both FRs and FRt.

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1) In France, FRs and FRt are treated as one zone (TRS). The results for this zone are relevant for both FRs and FRt

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Ten-Year Network Development Plan 2017 Annex F: Methodology | 15