Transmission Projects in Western

Balkans Region

Davor BajsENERGY INSTITUTE HRVOJE POZAR (EIHP)

ZAGREB, CROATIA

Đorđe DobrijevićELECTRICITY COORDINATING CENTER (EKC)

BELGRADE, SERBIA

Implementing Regional Electricity Transmission Projects, Vienna, October 2nd, 2012

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CONTENTS

INTRODUCTIONSEE TRANSMISSION SYSTEMRECENT TRANSMISSION PROJECTSFUTURE BOTTLENECKSFUTURE TRANSMISSION PROJECTS

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INTRODUCTION9 countries, different characteristicsannual consumption4 TWh – 56 TWhpeak loads 0,7 GW – 9 GWSEE: ~30 GW, 230 TWhelectricity importing regionexporters: Bulgaria, Romania and Bosnia and Herzegovinapower plants: hydrology dependence, old facilities, high production pricesprice of electricity: regulated

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SEE TRANSMISSION SYSTEM

400 kV, 220 kV, 110 kV; generally well-meshedhigh interconnection capacitieshigh network availability

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RECENT TRANSMISSION PROJECTSNew 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)

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RECENT TRANSMISSION PROJECTSIn-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)

RECENT TRANSMISSION PROJECTS

Reconnection of the 2nd UCTE Synchronous Zone to the main UCTE grid October 2004

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RECENT TRANSMISSION PROJECTS (2000 – up to now)

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SEE TRANSMISSION SYSTEMInterconnection capacities (sum) – SEE + (A, HU, GR, SLO)

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SEE TRANSMISSION SYSTEMInterconnection capacities (sum) - EUROPE

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SEE TRANSMISSION SYSTEMNTC values – winter 2010/2011 (ENTSO-E)

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SEE TRANSMISSION SYSTEMPeak loads and transmission capacities based on the NTC values

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POSSIBLE FUTURE BOTTLENECKS

2015 2020

Interconnection lines – not congestedInternal lines – somewhere congested

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FUTURE TRANSMISSION PROJECTSMAIN 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)

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POSSIBLE REINFORCEMENTS (plans, ideas,…)

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RELEVANT STUDIESSECI 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

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RELEVANT STUDIESCOMPLEMENTARY 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

Thank You!

dbajs@eihp.hrdjordje.dobrijevic@ekc-ltd.com