The Ten-Year Network Development Plan of IPTO

SEERC 2nd Technical Advisory Committee meeting 14 th January 2016, Athens The Ten-Year Network Development Plan of IPTO Y. Kabouris Director of Transmission System Planning-IPTO kabouris@admie.gr

TEN YEAR NETWORK DEVELOPMENT PLAN (TYNDP) IPTO S.A is the Transmission System Operator in Greece. In this context, operation, maintenance and development of the Hellenic Transmission System is performed solely by IPTO. IPTO S.A issues on a yearly basis a Ten Year Network Development Plan that is submitted for approval by the Regulatory Authority of Greece (RAE) after an extended consultation with all the involved stakeholders. TYNDP is the primary investment Plan of IPTO. It is binding by law only for the first three years of the examined horizon. TYNDP covering the period 2015-2024 is uploaded in IPTO website (www.admie.gr) and following a public consultation has been submitted to RAE in order to be approved. 2

TEN YEAR NETWORK DEVELOPMENT PLAN 2015-2024 The economic recession resulted in a considerable reduction of electricity consumption: Approximately 3,7% reduction in annual energy consumption comparing the years 2013 and 2012 and 0.9% in 2014 compared to 2013. Approximately 10,8% reduction in annual energy consumption compared to the maximum annual energy consumption (recorded in 2008) This load reduction reflects similar reduction in IPTO estimations for the electricity consumption in the coming decade compared to older estimations In addition the increase in distributed generation (mainly photovoltaics) resulted in a reduction of peak power demand as well as the needs to transfer electricity (~9% contribution in 2014) for the electrical loads in the transmission system. As a result there is a potential to delay the implementation of some future transmission projects related mainly to serving loads, without any implications to the security of supply of the Greek power system. Drivers for the Greek Transmission System Development: Connection of RES generation in the framework of National and European targets for an increased RES penetration (40% in the electricity sector) Interconnection of Greek islands (security of supply, reduction of the energy cost, environmental issues) 3 Major problem: Reaction of the public and delays in the permitting process.

Evolution of the Net Electricity Demand (pumping not included) Εξέλιξη Συνολικής Ζήτησης TWh GW 60 12 55 11 50 10 45 9 40 35 30 Ζήτηση Ηλεκτρικής Ενέργειας (TWh) Ετήσια Αιχμή (GW) 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 8 7 6

Ιαν-11 Φεβ-11 Μαρ-11 Απρ-11 Μάι -11 Ιουν-11 Ιουλ-11 Αύγ-11 Σεπ-11 Οκτ-11 Νοε-11 Δεκ-11 Ιαν-12 Φεβ-12 Μαρ-12 Απρ-12 Μάι-12 Ιουν-12 Ιουλ-12 Αύγ-12 Σεπ-12 Οκτ-12 Νοε-12 Δεκ-12 Ιαν-13 Φεβ-13 Μαρ-13 Απρ-13 Μάι-13 Ιουν-13 Ιουλ-13 Αύγ-13 Σεπ-13 Οκτ-13 Νοε-13 Δεκ-13 2600 2500 2400 2300 2200 2100 2000 1900 1800 1700 1600 1500 1400 1300 1200 1100 1000 900 800 700 600 500 400 300 200 100 0 MW (πλην στέγες) MW (στέγες) Σύνολο Development of photovoltaic systems during the last three years

(MW) (TWh) Influence of distributed generation Επίδραση διεσπαρμένης παραγωγής από ΑΠΕ στη Ζήτηση Ηλεκτρικής Ενέργειας 58 56 54 52 50 48 46 44 42 Συνολική Ζήτηση Ζήτηση Συστήματος 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 11000 10500 10000 Επίδραση διεσπαρμένης παραγωγής από ΑΠΕ στην Ετήσια Αιχμή Φορτίου Συνολική Αιχμή Αιχμή Συστήματος 9500 9000 8500 8000 7500 2009 2010 2011 2012 2013 2014

Electricity demand in 2014 5500 5000 (MWh) (MW) Μηνιαία Ζήτηση Ηλεκτρικής Ενέργειας για το 2014 Συνολική Ζήτηση Ζήτηση Συστήματος 4500 4000 3500 3000 Ιαν Φεβ Μαρ Απρ Μάϊος Ιουν Ιουλ Αυγ Σεπ Οκτ Νοε Δεκ Μηνιαία Αιχμή Φορτίου για το 2014 9500 9000 8500 Συνολική Αιχμή Αιχμή Συστήματος 8000 7500 7000 6500 6000 Ιαν Φεβ Μαρ Απρ Μάϊος Ιουν Ιουλ Αυγ Σεπ Οκτ Νοε Δεκ

Comparative Energy Balances Κατανομή Ισοζυγίου Παραγωγής για το 2014 Υδροηλεκτρικ ά 7,75% ΑΠΕ 17,14% Φυσικό Αέριο 12,57% Πετρέλαιο 0,00% Διασυνδέσεις 17,49% Λιγνίτης 45,04% Share of RES in 2014 ~ 26%

The most important transmission projects commissioned during the last four years EHV S/S N. Santa and connection to the 400kV transmission system EHV S/S Lagada and 150kV as well as 400kV connection networks EHV S/S Aliveri and 150kV as well as 400kV connection networks (including a cable part) EHV S/S Megalopoli and 150kV connection networks > 10 150kV/20kV new SS for the connection of new RES generation as well as in order cope with needs related to the distribution network Cable connection of the Evia island and the Attica region(nea Macri) in order to allow the increase of wind penetration in Evia

Finalization of the 150kV Attica-Evia interconnection in order to cope with new wind farms connection (energisation of the 22 nd of June 2015) 1. Cable connection Nea Makri-Polypotamos Link: Underground cables + submarine cable + overhead transmission line (yellow line) 2. 150kV double circuit overhead transmission line towards the south part of Evia 3. It will allow the safe interconnection of new wind farms with a total installed capacity of 450MW 10

Demand forecast for the period 2014-2024 (ΤWh) 65 63 61 59 57 55 53 51 49 47 Εξέλιξη Συνολικής Ζήτησης Ενέργειας Ιστορικά στοιχεία Σενάριο Χαμηλής Ζήτησης Σενάριο Αναφοράς Σενάριο Υψηλής Ζήτησης 45 2001 2003 2005 2007 2009 2011 2013 2015 2017 2019 2021 2023 2025 έτος Σύγκριση προβλέψεων ζήτησης ΑΔΜΗΕ (Σενάριο Αναφοράς) 70 65 ΔΠΑ 2014-2023 ΔΠΑ 2015-2024 (ΤWh) 60 55 50 45 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 έτος

The most important Transmission Projects included in TYNDP 2015-2024 Small amendments compared to the TYNDP 2014-2023 Evia-Attica cable connection for the connection of new wind farms in Evia New 400kV Lagadas-Filippoi OHL Development of the 400kV in the Peloponnese peninsula, connection to the 400kV backbone of continental Greece and construction of a new EHV S/S in Korinthos New EHV S/S Rouf. Second BG-GR interconnection between Nea Santa (GR)- Maritsa (BG) (PCI) Cable interconnection of the Greek islands Cycladic islands interconnection (under construction) Interconnection of the island of Crete with the mainland transmission system (under study) The interconnection of the Greek islands will result in a significant reduction of the production cost, the increase of security of supply and better exploitation of the RES potential in the Aegean Sea. A considerable environmental improvement in these islands is also expected (especially concerning the Cycladic islands)

Phase A

Phase Β

Phase C

New 400kV Lagadas-Filliopoi OHL

New BG GR interconnector PCI Project It will contribute considerably to the NTC increase at the North borders of Greece

Development of 400kV network in Peloponese Doubling the penetration level of intermittent RES

New GIS EHV S/S in Rouf using GIS technology Considerably increase of SoS in Athens area

Interconnection of Crete with the mainland transmission system Annual energy consumption ~3ΤWh (~4% of the total National consumption) Relevant studies started from the mid 80s. During this period an HVDC solution has been examined. Connecting points were the cape Spatha in Chania/Crete and an area close to Monemvasia in Peloponese. The nominal power foreseen was 600MW (2x300MW). The project was postponed due to financial issues. In 2011 a new study has been conducted by a working group composed by representatives from HTSO (the former Greek TSO), PPC and RAE. A large number of alternative scenarios was examined including the most technologically evolved solutions such as HVDC links utilizing voltage source converters (VSC). At the beginning of 2013 and update of the basic scenarios took place and after that dynamic stability studies have been performed. Based on the results of the studies mentioned above, IPTO works intensively for the realization of this project. The expected commissioning date is foreseen during the current decade.

Interconnection of Crete with the mainland transmission system Εξέλιξη Φορτίων Κρήτης τα τελευταία 50 χρόνια The definition of the connection point in the mainland is pending

TYNDP 2015-2024 Budget Ten Year investment plan over 2200million Euros

In conclusion IPTO implements for the period 2015-20204 a very ambitious program for the development of the National Transmission System that includes the project of development of a 400kV network in Peloponnese, the construction of new EHV S/S and the interconnections of Cycladic Islands and Crete. T he main drivers include the preservation of high security of supply levels taking into account future needs, the achievement of National targets for RES development and the interconnection of electrically isolated island regions in order to reduce their production cost. This program necessitates considerable investments which are not easy to achieve considering the prolonged economic recession. Nevertheless, IPTO will undertake all necessary activities and efforts to successfully materialize the Plan. Any possible funding sources will be investigated.

24 Thank you www.admie.gr kabouris@admie.gr