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AEGEAN INTERCONNECTION PROJECT

AEGEAN INTERCONNECTION PROJECT. Athens, 24 th May, 2011. Ind ex. The Company The Aegean Project Why the interconnection ? Interconnection and MSP: discussion subjects Conclusion.

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AEGEAN INTERCONNECTION PROJECT

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  1. AEGEAN INTERCONNECTION PROJECT Athens, 24th May, 2011

  2. Index • The Company • The Aegean Project • Why the interconnection? • Interconnection and MSP: discussion subjects • Conclusion

  3. ROKASGROUP operates and maintains 17 W/Fs of totalcapacity 255,3 MW and 2 Photovoltaic Farms of total capacity 2,2MW, distributed all over Greece Rokas Group - Installed Wind and PV Farms Total installed capacity 257,5MW ROKASGROUP employs over 200 people

  4. Medium & High Voltage Grids ROKAS Owned PPC Owned (Internal Grid) (Connection Grid) Medium Voltage Grids (km) (km) 35,41 41,98 Total Overhead Medium Voltage Grids 62 Total Underground Medium Voltage Grids High Voltage Grids 20 Total Overhead High Voltage Grids Substations ROKAS Owned PPC Owned (Number) (Number) Total Substations 20/150 kV 3 2 Rokas Group – Installed Electrical Infrastructure

  5. Installed Capacity by 1st Quarter 2011: 2010 Generation: Iberdrola Renovables, a world leader… 25,405 GWh 12,834MW No1Wind-energy producer in theworld

  6. Production: 154.000 GWh / Distribution: 100.596 GWh Total installed capacity: 45.000 MW 916 substations, 19.591 km HV, 215.290 km M&LV lines IBERDROLA, the utility: managed assets (1) World leader in wind power, Spain’s leading energy group and one of the top 5 electric companies in the world (1)yearend2010

  7. Index • The Company • The Aegean Project • Why the interconnection? • Interconnection and MSP: discussion subjects • Conclusion

  8. The Aegean Project • Interconnection of Lesvos, Chios and Limnos with mainland via a 443 km long submarine cable • Installation of wind capacity totaling 706MW

  9. The Interconnection • 1High Voltage Direct Current circuit (Evia-Chios) • 2 HV AC or DC circuits under investigation • Directcurrent rated voltage: 150-300 kV • 706 MW capacity • Submarine cable total length: 443 km • 4 converter stations DC/AC • Connection to Larimna (mainland) ultra HV centre

  10. Interconnection Scenario of Lesvos, Limnos, Chios with the Interconnected System • Interconnection of Lesvos-Eviavia DC link • Interconnection of Lesvos-Chios via AC or DC link • Interconnection of Lesvos-Limnos via AC or DC link • Mainland • Installation of an AC/DC converter station (C/S) close to Larimna 400kV substation • Underground lines (HVDC) to connect Larimna S/S with Viotia and Evia East with Evia West landing point • Islands • Installation of a AC/DC C/S on each island • 218km HVDC submarine cable connection from Evia landing point to Lesvos • 84km HVDC submarine cable connection from Lesvos to Chios • 117km HVDC submarine cable connection from Lesvos to Limnos

  11. Point to Point vs. Multiterminal Interconnection

  12. Submarine Cable • Cables are placed at a distance of 20m from the sea shore in a common trench of 2m depth that is covered by 25cm of concrete • From there onwards and up to a sea depth of 15m, cables are placed in separate trenches of 2m depth • From sea depth 15m, cables are inserted in separate trenches of 1m depth

  13. Electrical Infrastructure per Island No of Converter No of Substations Stations Lesvos 1 2 Chios 1 2 Limnos 1 2 MV of 20, 33 or 66 kV Key W/Fs Characteristics

  14. Index • The Company • The Aegean Project • Why the interconnection? • Interconnection and MSP: discussion subjects • Conclusion

  15. Strategic Environmental Development of RES / reduction of energy dependency on imports / update of electrical infrastructure Reduced CO2 emissions / contribution in meeting EU RES targets for 2020 Channeling energy into the islands, solving in a reliable way their power supply problems Security of supply Reasons for the interconnection… Geopolitical Connects three islands of national importance with the mainland Local acceptance Reduce the electricity bills for local residences

  16. Index • The Company • The Aegean Project • Why the interconnection? • Interconnection and MSP: discussion subjects • Conclusion

  17. Great depths and Long distances Landing Points for each island interconnected Crossing Evia Island for System interconnection Planning and Licensing – Conflict Subjects Lying of submarine cables Tectonic faults and Earthquakes

  18. N-1 and ways of fulfillment (loop connection) Black Start Possibility Calculation of the interconnection losses Electrical System – Conflict Subjects Regulation of the active and reactive power • Interconnection of Larimna with Chios-Lesvos-Limnos- UHV S/S Filippoi (or Nea Santa)

  19. Index • The Company • The Aegean Project • Why the interconnection? • Interconnection and MSP: discussion subjects • Conclusion

  20. Conclusion There are technical and planningproblems. We can dealwiththem and managetosolvethem BUT the CRUCIAL POINT isthe LOCAL ACCEPTANCEof this kind of projects

  21. When you find your path, there’s no turning back. IBERDROLA. AEGEAN INTERCONNECTION PROJECT Thanks for your attention! www.rokasgroup.gr Athens, 24th May, 2011

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