1. Transmission Projects in Western Balkans Region Davor Bajs ENERGY INSTITUTE HRVOJE POZAR (EIHP) ZAGREB, CROATIA Đorđe Dobrijević ELECTRICITY COORDINATING CENTER (EKC) BELGRADE, SERBIA Implementing Regional Electricity Transmission Projects, Vienna, October 2 nd, 2012

2. 2 CONTENTS INTRODUCTION SEE TRANSMISSION SYSTEM RECENT TRANSMISSION PROJECTS FUTURE BOTTLENECKS FUTURE TRANSMISSION PROJECTS

3. 3 INTRODUCTION 9 countries, different characteristics annual consumption 4 TWh – 56 TWh peak loads 0,7 GW – 9 GW SEE: ~30 GW, 230 TWh electricity importing region exporters: Bulgaria, Romania and Bosnia and Herzegovina power plants: hydrology dependence, old facilities, high production prices price of electricity: regulated

4. 4 SEE TRANSMISSION SYSTEM 400 kV, 220 kV, 110 kV; generally well-meshed high interconnection capacities high network availability

5. 5 RECENT TRANSMISSION PROJECTS New lines Žerjavinec(HR) - Heviz (HU) 2x400 kV (2000) Sandorfalva (HU) - Bekescaba (HU) 400 kV (2003) Amyndeo (GR) - Florina (GR) 2x400 kV (2004) S.Mitrovica (RS) - Ugljevik (BA) 400 kV (2005) Paks (HU) - Pecs (HU) 400 kV, second line (2005) Subotica (RS) - Sombor (RS) 400 kV (2007) Florina (GR) - Bitola (MK) 400 kV (2007) Gyor (HU) - Szombathely (HU) 2x400 kV (2007) Filippi (GR) - N.Santa (GR) - Babeski (Tur) 400 kV (2008) Arad (RO) - Nadab (RO) - Bekescaba (HU) 400 kV (2009) Fier (Al) - Vlore (Al) 220 kV (2009) Dubrovo (MK) - Stip (MK) - C.Mogila (BG) 400 kV (2009) Szombathely (HU) - Heviz (HU) 2x400 kV (2010) Podgorica (ME) - Tirana (AL) - Elbasan (AL) 400 kV (2010) Ernestinovo (HR) - Pecs (HU) 2x400 kV (2010) Nis (RS) - Stip (MK) (to the border, in operation Nis - Leskovac) 400 kV (2010) Suceava (RO) - Roman Nord (RO) - Bacau (RO) - Gutinas (RO) (upgraded from 220 kV to 400 kV) (2011) Martinvasar (HU) - Bicske (HU) 400 kV (2011) Plovdiv (BG) - Zlatitsa (BG) 400 kV (2011)

6. 6 RECENT TRANSMISSION PROJECTS In-out connections Kragujevac (RS) - Jagodina (RS) - Nis (RS) 400 kV (2004) Krusevac(RS) – Podujevo (Kosovo*) - Kosovo (Kosovo*) 220 kV (2004) Ernestinovo (HR) - S.Mitrovica (RS) - Mladost (RS) 400 kV (2004) Elbasan (AL) - Zemlak (AL) - Kardia (GR) 400 kV (2004) Skopje 4 (MK) - Skopje 5 (MK) - Kosovo B (Kosovo*) 400 kV (2004) Mraclin (HR) – Prijedor (BA) - Jajce (BA) 220 kV (2007) Sacalaz (RO) - Calea Aradului (RO) - Arad (RO) 220 kV (2009) Plovdiv (BG) - Maritsa Istok (BG) - M.Istok 3 (BG) 400 kV (2009) Tulcea (RO) - Tariverde (RO) - Constanta (RO) 400 kV (2010) Albetirsa (HU) - Szolnok (HU) - Bekescaba (HU) 400 kV (2011) Gyor (HU) - Gonyu (HU) - Liter (HU) 400 kV (2010) V.Djejes (AL) - Koplik (AL) - Podgorica (ME) 220 kV(2009) Madara (BG) - Varna (BG) - Dobrudza (BG) 220 kV (2011) Kosovo B (Kosovo*) - Pec (Kosovo*) - Ribarevine (ME) 400 kV (2010) Kosovo B (Kosovo*) - Urosevac (Kosovo*) - Skopje (MK) 400 kV (2011) Isaccea (RO) - Rahman (RO) - Dobrudza (BG) (2012)

7. RECENT TRANSMISSION PROJECTS Reconnection of the 2 nd UCTE Synchronous Zone to the main UCTE grid  October 2004 7

8. 8 RECENT TRANSMISSION PROJECTS (2000 – up to now)

9. 9 SEE TRANSMISSION SYSTEM Interconnection capacities (sum) – SEE + (A, HU, GR, SLO)

10. 10 SEE TRANSMISSION SYSTEM Interconnection capacities (sum) - EUROPE

11. 11 SEE TRANSMISSION SYSTEM NTC values – winter 2010/2011 (ENTSO-E)

12. 12 SEE TRANSMISSION SYSTEM Peak loads and transmission capacities based on the NTC values

13. 13 POSSIBLE FUTURE BOTTLENECKS 20152020 Interconnection lines – not congested Internal lines – somewhere congested

14. 14 FUTURE TRANSMISSION PROJECTS MAIN DRIVERS:  conventional power plants connection  renewables (wind)  market oriented investments INTERCONNECTION LINES:  several projects under consideration (feasibility studies, ideas)  generally large interconnection capacities in SEE region INTERNAL TRANSMISSION SYSTEMS:  reinforcements  maintenance  revitalization ANCILLARY SERVICES  regional market (benefits: wind integration, cost reflective services) OBSTACLES:  costs, transmission fees  environmental  politics KEY ISSUES:  economically justified investments  TSO’s → realistic and well prepared investment and development plans  regulatory authorities (more dynamic role)

15. 15 POSSIBLE REINFORCEMENTS (plans, ideas,…)

16. 16 RELEVANT STUDIES SECI REGIONAL ELECTRICITY INTERCONNECTION PLANNING STUDY, SECI, 2003 REPORT OF UCTE EXECUTIVE TEAM "NORTH-SOUTH RE SYNCHRONIZATION", EKC+OTHERS, 2003 STUDY FOR NEW 400 KV INTERCONNECTION LINES BETWEEN FYROM-SERBIA AND ALBANIA-MONTENEGRO, EKC+OTHERS, 2003 REBIS: GENERATION INVESTMENT STUDY (GIS), WORLD BANK, 2004 EVALUATION OF TRANSFER CAPABILITIES IN BALKANS INTERCONNECTED NETWORK, EKC, 2004 AUDIT OF OVERCURRENT PROTECTION RELAY SETTINGS ON NORTH-SOUTH TRANSMISSION CORRIDOR, EKC, 2004 TECHNICAL AND ECONOMICAL ASPECTS OF CONNECTION ELECTRIC POWER SYSTEMS BETWEEN SERBIA AND MACEDONIA WITH NEW TRANSMISSION LINE 400 KV NIŠ-(LESKOVAC-VRANJE)-SKOPJE, EKC, 2004 GENERATION INVESTMENT STUDY ON TRANSMISSION NETWORK CHECKING, ELECTRICITY COORDINATING CENTER, EIHP, 2005 TRANSMISSION NETWORK INVESTMENT CRITERIA, SECI, 2007 GENERATION INVESTMENT STUDY, UPDATE, WORLD BANK, 2007 EVALUATION OF INVESTMENTS IN TRANSMISSION NETWORK TO SUSTAIN GENERATION AND MARKET DEVELOPMENT IN SEE, SECI, 2007

17. 17 RELEVANT STUDIES COMPLEMENTARY TECHNICAL STUDIES FOR THE SYNCHRONIZATION OF THE TURKISH POWER SYSTEM WITH THE UCTE POWER SYSTEM, EKC+OTHERS, 2007 FEASIBILITY STUDY FOR NEW UNDER SEA HVDC INTERCONNECTION BETWEEN ITALY AND MONTENEGRO, EKC, 2008 FEASIBILITY STUDY: SYNCHRONOUS INTERCONNECTION OF THE POWER SYSTEMS OF IPS/UPS WITH UCTE, EKC+OTHERS, 2008 UNCERTAINTIES IN THE SEE TRANSMISSION NETWORK AND EVALUATION OF RISK FOR FUTURE INFRASTRUCTURE INVESTMENTS, SECI, 2009 STUDY OF THE 400 KV OHL SERBIA – ROMANIA, EKC, 2009 NEW INTERCONNECTION LINE AMONG SERBIA AND MONTENEGRO (IMPROVEMENT OF TRANSMISSION CAPABILITY AT THE NORTH-SOUTH CORRIDOR), EKC, 2010 PREPARATION FOR LARGE SCALE WIND INTEGRATION IN SEE POWER SYSTEM, SECI, 2011 DEVELOPMENT OF BEST PRACTICE RECOMMENDATIONS ON REGULATORY INCENTIVES PROMOTING INFRASTRUCTURE INVESTMENTS, E-BRIDGE CONSULTING, 2011 WESTERN SERBIA – 400KV TRANSMISSION SYSTEM UPGRADE, EKC+OTHERS, 2011 RELIABILITY ASSESSMENT OF SEE TRANSMISSION NETWORK, SECI, 2012 FEASIBILITY STUDY „DOUBLE 220 KV LINK PODGORICA – VAU DEJES“, 2012 FEASIBILITY STUDY INCLUDING ESIA – ALBANIA/FYR OF MACEDONIA: ELBASAN-BITOLA 400 KV -TRANSMISSION LINE, EKC+OTHERS, 2012

18. Thank You! dbajs@eihp.hr djordje.dobrijevic@ekc-ltd.com