1. THORNTONBANK 325MW OFFSHORE WINDFARMBenjamin ColbrandtC-PowerStudiedag: Energieopslag en Smart GridsEen visie op het net van morgen4 & 5 september 2014

2. THORNTONBANK 325MW OFFSHORE WINDFARM 3. OFFSHORE WINDFARM ON THE THORNTONBANK, BELGIUM1. GENERAL2. PROJECT PLANNING3. PHASE 14. PHASE 2 & 35. OPERATION AND MAINTENANCE- 2 - 4. GENERALConcession- 3 - 6 windturbines 5MW48 windturbines 6,15MW Installed capacity 325MW Annual generation 1000.000.000kWh Annual consumption of 600.000 inhabitants Avoided CO2 emission: 450.000t/year ~ forest of 90.000ha 5. Z-KRACHT- 4 -GENERALShareholdersshareholders 6. C-POWERABB ) REpower Offshore cable design and supply Offshore cable connecting(from final hang off) Installation electrical equipment Supply and commissioning offshoretransformerOnshore cable laying Scheduled maintenance andtroubleshooting first 5 years Jacket design and supply Jacket transport and installation Offshore infield cable laying Offshore sea cable laying Offshore transport and installationOffshore Tranformer Station (OTS)Dune crossing (directional drilling)Maritime logistics on WTG installationDesign, manufacture, delivery andinstallation of turbinesOperation and Maintenance over 20years after commissioning phase IIIFIDICBased 1st phasecontract updateAAVbased contractlessons learnedFirst phase contractupdate- 10 -GENERALContract Structure for Phase 2 & 3 7. - 12 -GENERALLocation Thorntonbank 8. - 13 -GENERALLocation ThorntonbankThe international borders and the outline of the BelgianContinental Shelf (BCS) 9. - 14 -GENERALLocation ThorntonbankThe major International Shipping routes 10. - 17 -GENERALLocation ThorntonbankThe military zones 11. - 18 -GENERALLocation ThorntonbankGas pipes and telecom cables 12. - 19 -GENERALLocation ThorntonbankWildlife preservation areas 13. - 20 -GENERALLocation ThorntonbankRadar range 14. - 21 -GENERALLocation ThorntonbankThe Flemish sandbanks outside the 12 NM zone 15. - 22 -GENERALLocation ThorntonbankDedicated area for offshore wind turbines 16. - 23 -GENERALConcession 17. 2.000 KWh 80m 80m- 25 -GENERALCapacity Windturbines50 KWh 24m 15m100 KW 20mh= hight= rotor diameter500 KW 40m600 KWh 43m 50m5.000 KWh 114m 124m1980 1985 1990 1995 2000 2006source: EWEA20096.000 KWh 198m 126m7.000 KW*h 198m 127m* Only onshore 18. OFFSHORE WINDFARM ON THE THORNTONBANK, BELGIUM1. GENERAL2. PROJECT PLANNING3. PHASE 14. PHASE 2 & 35. OPERATION AND MAINTENANCE- 27 - 19. = 6 REpower 5MW- 28 -PROJECT PLANNINGGeneral PlanningPhase 3= 18REpower6,15MWArea A2007/2009phase 1Phase 1Area ADemonstration phase:Construction of 6 turbines (30 MW) 1st electricity cable: 150 kV (40km)2011/2012phase 2Construction of 30 turbines (184,5 MW) 24 turbines Area B and 6 turbines Area A -2nd electricity cable: 150kV (40km)Construction of the offshore transformer station2012/2013phase 3Construction of 18 turbines (110,7MW) - Total: 325,2 MWPhase 2= 24REpower6,15MWArea B= 6Repower6,15MWArea A 20. - 30 -PROJECT PLANNINGLocation of the turbines 21. OFFSHORE WINDFARM ON THE THORNTONBANK, BELGIUM1. GENERAL2. PROJECT PLANNING3. PHASE 14. PHASE 2 & 35. OPERATION AND MAINTENANCE- 32 - 22. PHASE 1REpower 5M installed on Gravity Base Foundation (GBF)- 33 - 23. PHASE 1REpower 5M installed on Gravity Base Foundation (GBF)- 34 - Height: 38,5 m to 44 m Weight: 2800 to 3.000 tons Concrete: +/- 1060 m3 (perGBF) Reinforcement: +/- 255 ton(per GBF) 24. - 35 -PHASE 1Site Preparation 25. - 36 -PHASE 1Site PreparationSurface reinforced zone Construction zone: 4840 m2 Transport zone: 2354 m2 26. - 37 -PHASE 1Construction of the GBF onshoreBase Slap 27. - 38 -PHASE 1Construction of the GBF onshoreFormwork Conical Part 28. - 39 -PHASE 1Construction of the GBF onshoreCasting concrete 29. - 40 -PHASE 1Construction of the GBF onshoreRingbeam 30. - 42 -PHASE 1Construction of the GBF onshoreFormwork cylindrical part 31. - 43 -PHASE 1Construction of the GBF onshoreTop platform 32. 1. DREDGING OF THE LOOSE SAND LAYER (-24.0 TAW)- 44 -PHASE 1Before installing GBF 33. 2. DREDGING OF THE DENSE SAND LAYER (-25.5 TAW)- 45 -PHASE 1Before installing GBF 34. 3. INSTALLATION OF THE FOUNDATION LAYER- 46 -PHASE 1Before installing GBF 35. - 47 -PHASE 1Transport GBF to the quay wall 36. PHASE 1Lifting of the GBF with the RAMBIZ crane- 48 - 37. - 49 -PHASE 1Transport and installation of the GBF 38. 4. BACKFILL OF THE FOUNDATION PIT THORNTON I- 50 -PHASE 1After installation GBF 39. 5. INFILL OF THE GBF- 51 -PHASE 1After installation GBF 40. 6. SCOUR PROTECTION- 52 -PHASE 1After installation GBF 41. - 53 -PHASE 1Installation ladders 42. - 54 -PHASE 1Pictures phase 1 43. - 55 -PHASE 1Windturbines on GBF 44. OFFSHORE WINDFARM ON THE THORNTONBANK, BELGIUM1. GENERAL2. PROJECT PLANNING3. PHASE 14. PHASE 2 & 34.1 Foundations4.2 Windturbine4.3 Electrical installation5. OPERATION AND MAINTENANCE- 56 - 45. PHASE 2 & 3 FOUNDATIONSMove from Gravity base foundation to Jackets foundationGravity Based Foundation (GBF) Jacket Foundations- 57 - 46. PHASE 2 & 3 FOUNDATIONSDetailed Design- 58 -37,7m 47,8m (+6.2m midsection)18x18m 47. PHASE 2 & 3 FOUNDATIONSEngineering & DesignOWNER Owners Engineer- 59 -Marine Warranty SurveyorLenders EngineerTHV Seawind EPC Subcontractor FoundationsSmulders Foundations B.V.Engineering: OWEC Tower A/SCertification Design Basis Certification Detailed Design 48. PHASE 2 & 3 FOUNDATIONS3 steps for installation of a Jacket- 60 -1. Seabed preparation2. Pre-piling: driving of 4foundation piles3. Installation of jacket foundation 49. PHASE 2 & 3 FOUNDATIONS1. Seabed preparations: dredging up to reference seabed level- 61 -Dredging of loose and dense sand layer70x50m 50. PHASE 2 & 3 FOUNDATIONS2. Pre-piling: Pin-pilesLength: 21m (sub area A) 49,5m (sub area B)Outer diameter: 72 (1,83m)Wall thickness: 40/50mm- 62 - 51. PHASE 2 & 3 FOUNDATIONS2. Pre-piling: Storage of pin-piles at Halve Maan site- 63 - 52. PHASE 2 & 3 FOUNDATIONS2. Pre-piling: Storage of pin-piles at Halve Maan site Piles arrive on transport barges; 6 piles pershipment Piles transported to offshore site with PSV;8 piles per shipment- 64 - 53. PHASE 2 & 3 FOUNDATIONS2. Pre-piling: installation technical drawing- 66 - 54. PHASE 2 & 3 FOUNDATIONS2. Pre-piling: Transport pin-piles via Platform Supply Vessel- 67 - 55. PHASE 2 & 3 FOUNDATIONS2. Pre-piling: Transport pin-piles via Platform Supply VesselTotal weight of 196 piles: 15.100tPile weight sub area A (average): 65t (46t 89t)Pile weight sub area B (average): 89t (80t 97t)- 68 - 56. PHASE 2 & 3 FOUNDATIONS2. Pre-piling: Template attached to Buzzard- 69 - 57. PHASE 2 & 3 FOUNDATIONS2. Pre-piling: Lowering template to sea bottom & positioning of the piles into template- 70 - 58. PHASE 2 & 3 FOUNDATIONS2. Pre-piling: Upending of pin-pile- 71 - 59. PHASE 2 & 3 FOUNDATIONS2. Pre-piling: Lowering template to sea bottom- 72 - 60. PHASE 2 & 3 FOUNDATIONS2. Pre-piling: Positioning of pile through deck into template- 73 - 61. PHASE 2 & 3 FOUNDATIONS2. Pre-piling: Positioning of pile through deck into template- 74 - 62. PHASE 2 & 3 FOUNDATIONS2. Pre-piling: Seal scarer- 75 - 63. PHASE 2 & 3 FOUNDATIONS2. Pre-piling: Stabbing of piles into pre-piling template- 76 - 64. PHASE 2 & 3 FOUNDATIONS2. Pre-piling: Stabbing of piles into pre-piling template- 77 - 65. PHASE 2 & 3 FOUNDATIONS3. Jacket assembly at Smulders Hoboken (Belgium)- 80 - 66. PHASE 2 & 3 FOUNDATIONS3. Assembly of the pile stopper in workshop Iemants (Arendonk)- 81 - 67. PHASE 2 & 3 FOUNDATIONS3. Assembly midsection at Willems Balen (Belgium)- 82 -Weight: 111tHeight: 6.2m 68. PHASE 2 & 3 FOUNDATIONS3. Storage of Jacket in dry-dock Smulders HobokenTotal operational weight (average): 494tPrimary steel weight (average): 300t- 83 - 69. PHASE 2 & 3 FOUNDATIONS3. Load out Jackets at HobokenSecondary steel (boat landings, railings, j-tubes, ...) 83tMid section (transition piece with height of 6.2m): 111t48 Jackets for the wind farm1 Jacket for Offshore Transformer Station (800t)- 84 - 70. PHASE 2 & 3 FOUNDATIONS3. Transport of Jacket foundations- 85 - Transfer of Jackets from Hoboken toVlissingen Offshore transport of jackets fromVlissingen to Thorntonbank 71. PHASE 2 & 3 FOUNDATIONS3. Jacket installation with RambizStepsSand excavation and cleaning of pilesPositioning of jackets on pilesGrouting of space between jacket legs and foundation piles- 86 - 72. PHASE 2 & 3 FOUNDATIONS3. Jacket installation: Pile cleaning- 87 - 73. PHASE 2 & 3 FOUNDATIONS3. Jacket installation: Positioning- 88 -2 ROVs watch underwaterif jacket legs go into piles 74. PHASE 2 & 3 FOUNDATIONS3. Jacket installation: PositioningRambiz lowers jacket into the piles witnessed by ROVs- 89 - 75. PHASE 2 & 3 FOUNDATIONS3. Jacket installation: GroutingROV with camera Follow up grouting- 92 -process 76. PHASE 2 & 3 FOUNDATIONS3. Jacket installed- 93 - 77. PHASE 2 & 3 FOUNDATIONS3. Jacket installed- 94 -Cable entry points (final hang-off)interior site mid sectionBoat landing access laddersTemporary navigation light 78. OFFSHORE WINDFARM ON THE THORNTONBANK, BELGIUM1. GENERAL2. PROJECT PLANNING3. PHASE 14. PHASE 2 & 34.1 Foundations4.2 Windturbine4.3 Electrical installation5. OPERATION AND MAINTENANCE- 96 - 79. PHASE 2 & 3 WINDTURBINEOnshore pre-assembly yard (Zeewezendok)- 97 - 80. PHASE 2 & 3 WINDTURBINEShip transport of WTG components (except blades) Germany REBO Site- 99 - 81. PHASE 2 & 3 WINDTURBINERoad transport blades Denmark REBO Site- 100 - 82. PHASE 2 & 3 WINDTURBINEStorage of WTG components on REBO-site- 101 - 83. PHASE 2 & 3 WINDTURBINELoading rotor on the Neptune (JUB)- 102 - 84. PHASE 2 & 3 WINDTURBINETransport of WTG components to offshore site- 103 -One complete setNeptune 85. PHASE 2 & 3 WINDTURBINEInstallation of WTG: tower section- 104 -Tower mass: 240tTower diameter (O.D.): 5.50m 86. PHASE 2 & 3 WINDTURBINEInstallation of WTG: nacelle- 105 - 87. PHASE 2 & 3 WINDTURBINEInstallation of WTG: rotor- 106 -Mass of nacelle and rotor: 455t 88. PHASE 2 & 3 WINDTURBINEInstalled windturbineHub height: 94-96mTAWTotal tower height: 68.1mRotor diameter: 126mRotor speed: 7.5 12.1 rpm- 107 - 89. PHASE 2 & 3 WINDTURBINESenvion 6,15MW: Powercurve- 109 -70006000500040003000200010000Repower 6,15MWWind speed (m/s)Phase 2 & 3Power (kW)Phase 1 90. OFFSHORE WINDFARM ON THE THORNTONBANK, BELGIUM1. GENERAL2. PROJECT PLANNING3. PHASE 14. PHASE 2 & 34.1 Foundations4.2 Windturbine4.3 Offshore Transformer Station4.4 Electrical cables5. OPERATION AND MAINTENANCE- 110 - 91. PHASE 2 & 3 OTSJacket- 111 - Assembly Jacket in UK Transport OTS Jacket 92. PHASE 2 & 3 OTSTopside dimensionsTotal weight topside: 2000tVertical height: 15m- 112 - 93. PHASE 2 & 3 OTSElectric potentialElectric potential: 170MVA & 200MVA- 113 - 94. PHASE 2 & 3 OTSOffshore transformer station (OTS)- 114 - 95. PHASE 2 & 3 OTSOffshore transformer station (OTS)- 116 -Roll out from workshop HSM (Schiedam) 96. PHASE 2 & 3 OTSOffshore transformer station (OTS)Load out on transport barge- 117 - 97. PHASE 2 & 3 OTSOffshore Transport- 118 - 98. PHASE 2 & 3 OTSInstallation- 119 -Connection jacket - topside 99. PHASE 2 & 3 OTS- 120 - 100. OFFSHORE WINDFARM ON THE THORNTONBANK, BELGIUM1. GENERAL2. PROJECT PLANNING3. PHASE 14. PHASE 2 & 34.1 Foundations4.2 Windturbine4.3 Offshore Transformer Station4.4 Electrical cables5. OPERATION AND MAINTENANCE- 121 - 101. PHASE 2 & 3 ELECTRICAL INSTALLATIONConnections: Infield, OTS, Export cable, Elia gridThorntonbank Mainland54 turbines Offshore TransformerStation 325 MW- 122 -OnshoreSAS SlijkensInjection Elia grid33 kVCollection grid150 kV2 Export cables2 x 40 km 102. PHASE 2 & 3 ELECTRICAL CABLESInfield cable- 124 -Winding in the ABB cable factoryKarlskrona (Sweden)Loading in the cable coils of theSovereign 103. PHASE 2 & 3 ELECTRICAL CABLESInfield cable- 125 -Loading from cable factory to thecable laying vessel SovereignLaying by Sovereign 104. PHASE 2 & 3 ELECTRICAL CABLESInfield cable: Pull-in test Dynamic bending restrictor (Tekmar)- 126 - 105. PHASE 2 & 3 ELECTRICAL CABLESInfield cable: Preparation for 1st end pull-in- 127 -Connection pulling wire toChinese fingers 106. PHASE 2 & 3 ELECTRICAL CABLESInfield cable: Dynamic bending restrictor and cable protector- 128 - 107. PHASE 2 & 3 ELECTRICAL CABLESInfield cable: Pull-in arrival on foundation- 129 - 108. PHASE 2 & 3 ELECTRICAL CABLESInfield cable: ROV burial infield cables (jetting)- 131 - 109. PHASE 2 & 3 ELECTRICAL CABLESCable route between OTS Thorntonbank & coast line (export cable)23,5 cm- 132 -Offshore cabletrajectoryCross sectionexport cable 110. PHASE 2 & 3 ELECTRICAL INSTALLATION150kV Export Cable: Cable Laying- 133 - Survey cable route Objects detection during survey Local adjustment cable route + survey of 60locations (+/- 25 objects removed) 111. PHASE 2 & 3 ELECTRICAL CABLES150kV Export Cable: Loading on Stemat Spirit in Karlskrona- 134 -Loading of: Approx. 40km long export cable (weight 3300 ton) Loading speed of 6 to 8 m/min 88kg/m 112. PHASE 2 & 3 ELECTRICAL CABLES150kV Export Cable: Beaching- 135 - 113. PHASE 2 & 3 ELECTRICAL CABLES150kV Export Cable: Pull-in- 136 - 114. PHASE 2 & 3 ELECTRICAL INSTALLATION150kV Export Cable: Cable Burial- 137 - 115. PHASE 2 & 3 ELECTRICAL INSTALLATION150kV Export Cable: Cable Laying- 138 - 116. PHASE 2 & 3 ELECTRICAL INSTALLATION150kV Export Cable: Cable protection by asphalt matresses- 139 - 117. PHASE 2 & 3 ELECTRICAL INSTALLATION150kV Export Cable: onshore jointing export - landcable- 140 - 118. PHASE 2 & 3 ELECTRICAL INSTALLATIONOnshore cable trajectoryGodtschalckstraatSpuikomSas Slijkens- 141 -Koninklijke Baan 119. PHASE 2 & 3 ELECTRICAL INSTALLATIONSas Slijkens high-voltage station Elia (Bredene)- 142 - 120. PROJECT INSTALLATION STATUS TODAY- 143 - 121. OFFSHORE WINDFARM ON THE THORNTONBANK, BELGIUM1. GENERAL2. PROJECT PLANNING3. PHASE 14. PHASE 2 & 35. OPERATION AND MONITORING- 144 - 122. OPERATION AND MONITORINGControl Room- 145 - 123. OPERATION AND MONITORINGOveral overview ABB-scada (HV-lines)- 146 - 124. OPERATION AND MONITORINGTrafo 170 MVA + 150 kV-switch + measurements- 147 - 125. OPERATION AND MONITORINGTrafo 170 MVA + 150 kV-switch + measurements- 148 - 126. OPERATION AND MONITORINGTrafo 200 MVA + 150 kV switch + measurements- 149 - 127. OPERATION AND MONITORINGElia Grid info- 150 - 128. OPERATION AND MONITORINGLV distribution + Emergency GenSet- 151 - 129. OPERATION AND MONITORINGLV distribution + Emergency GenSet- 152 - 130. OPERATION AND MONITORING33 kV Busbar + switches to turbines Area B- 153 - 131. OPERATION AND MONITORING33 kV Busbar + switches to turbines Area A- 154 - 132. OPERATION AND MONITORINGDistribution Low Voltage- 155 - 133. OPERATION AND MONITORINGOpen Drain System (OTS) + Oil- water separator- 156 - 134. OPERATION AND MONITORINGMonitoring system turbines- 157 - 135. OPERATION AND MONITORINGMonitoring system turbinesWindspeed- 158 -Wind directionActive KW PowerReactive power 136. OPERATION AND MONITORINGMonitoring system turbinesTotal capacity- 159 -Capacity NowReactive capacity 137. OPERATION AND MONITORINGMonitoring system turbines- 160 - Control windturbines 138. OPERATION AND MONITORINGMonitoring 1 turbine- 161 -Windspeed +pitch-angleRotorspeed +generatorspeedPower + statusTurbine +serialnumberAcceslevel 8GeneralInformation 139. OPERATION AND MONITORINGMonitoring 1 turbine- Windsnelheid- pitch-angle- 162 - 140. OPERATION AND MONITORINGMonitoring 1 turbine- 163 -- Rotorspeed- generatorspeed 141. OPERATION AND MONITORINGMonitoring 1 turbine- 164 -- Power- Status 142. OPERATION AND MONITORINGMonitoring 1 turbine- 165 -- Turbine +serienumber 143. OPERATION AND MONITORINGMonitoring 1 turbine- 166 -Acceslevel 8 144. OPERATION AND MONITORINGMonitoring 1 turbineGeneralInformation- 167 - 145. OPERATION AND MONITORINGOverview Setpoint active and reactive power- 168 -Total 146. OPERATION AND MONITORINGOverview Setpoint active and reactive power- 169 - 147. OPERATION AND MONITORINGCamera Boatlanding WTG I1- 170 - 148. OPERATION AND MONITORINGCamera - OTS 200 MVA transformer- 171 - 149. OPERATION AND MONITORINGCable monitoring- 172 - 150. OPERATION AND MONITORINGCable monitoring- 173 - 151. OPERATION AND MONITORINGCable monitoring- 174 - 152. Thank you for your attention- 175 -For more information:+32.59.79.79.80www.c-power.be