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Assessment of the Sustainable Offshore Wind Potential in Portugal

Assessment of the Sustainable Offshore Wind Potential in Portugal. Paulo Costa , Teresa Simões , Ana Estanqueiro. OWEMES, CIVITAVECCHIA (ROME) 20-22 April 200 6. Departamento de Energias Renováveis Unidade de Energia Eólica e dos Oceanos. paulo.costa@ineti.pt teresa.simoes@ineti.pt

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Assessment of the Sustainable Offshore Wind Potential in Portugal

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  1. Assessment of the Sustainable Offshore Wind Potential in Portugal Paulo Costa , Teresa Simões , Ana Estanqueiro OWEMES, CIVITAVECCHIA (ROME) 20-22 April 2006 Departamento de Energias Renováveis Unidade de Energia Eólica e dos Oceanos paulo.costa@ineti.pt teresa.simoes@ineti.pt ana.estanqueiro@ineti.pt INSTITUTO NACIONAL DE ENGENHARIA, TECNOLOGIA E INOVAÇÃO

  2. 1- Main objective and rule slide 2 of 22

  3. Main objective and rule • Objective: • To identify coastal regions in Portugal with sustainability indicators for wind potential offshore development • Main Rule • Help developers to plan offshore wind parks along coastal areas taking into account the economic and technical feasibility of the project subjected to the following factors: • Distance to coast less than 15km; • Sea depth less than 40m; • A gently slope between bathymetry 20 and 40m; • Good resource assessment available; • Close to the available electric grid connections. slide 3 of 22

  4. 2- Offshore assessment and methodology slide 4 of 22

  5. Offshore assessment and methodology • A reasonable wind potential assessment was made by making a high resolution (3X3km) long term simulation with the popular MM5 atmospheric mesoscale model; • A set of a full one year of Reanalysis data (at intervals of 6h) from NCAR’s Mass Storage Systems ingested to MM5; • Simulate the power output field (h/year) for two turbine models: GEWE 1500SL (rotor with 60m height) and VESTAS V80 (80m height); slide 5 of 22

  6. Offshore assessment and methodology • Inter annual variability applied to simulated wind and power fields computed with help of 4 anemometric long term stations located in mainland Portugal; • Digitized bathymetric lines up to 40m depth; • Use spatial operations available in GIS (Geographic Information Systems) software to obtain favorable areas. slide 6 of 22

  7. 3- Set of numerical simulations slide 7 of 22

  8. Set of numerical simulations • Four one-way nested domains with resolutions of 81km 27km 9km and 3km • High resolution MM5 domain (3X3km) used for offshore assessment slide 8 of 22

  9. Set of numerical simulations • Parameterization schemes previously selected by making a couple of control simulations in order to minimize the differences between observed and simulated wind speed and direction values: • Gayno-Seaman (PBL); • RRTM (radiation); • GRELL (cumulus); • SIMPLE ICE (microphysics); • NOAH (soil model); • Selected numerical schemes slide 9 of 22

  10. Set of numerical simulations • INETI’s long term wind stations used in this work for validation purposes and to compute intra annual variability slide 10 of 22

  11. 4- Some numerical results slide 11 of 22

  12. Some numerical results • Simulated number of hours at full capacity for two turbine models • MM5 • (3X3km) • Intra annual variability • accounted GEWE 1.50 SL 1500 kW H=60m VESTAS V80 2000 kW H=80m slide 12 of 22

  13. Some numerical results • Power curves used in MM5 • simulations • for each turbine • model • Resolution • (3X3km) slide 13 of 22

  14. 5- GIS operations slide 14 of 22

  15. GIS operations • Some spatial GIS operations was used to make a “simple” query taking into account the following factors: • Distance to coast below 15km; • Sea bathymetry lower than 40m; • A gently slope between 20 and 40m depths; • “acceptable” wind resource (number of hours at full capacity great than 2300h/year); • Proximity to the network with available grid connection capacity. slide 15 of 22

  16. 6- GIS results slide 16 of 22

  17. GIS results • Six favourable areas were identified • for each • turbine • model. Areas A,B,C to F (capital letters) GEWE 1.50 SL 1500 kW H=60m VESTAS V80 2000 kW H=80m slide 17 of 22

  18. GIS results • A “zoom” for each selected area Figueira da Foz Espinho/Porto Berlengas/Peniche Portimão/Albufeira Bordeira Estuário do Tejo/Caparica/Tróia Vila Real de Sto António slide 18 of 22

  19. GIS results • Query results obtained for each selected area slide 19 of 22

  20. 7- Concluding remarks slide 20 of 22

  21. Concluding remarks • Unlike previous common public opinions, the preliminary results of this work enhance some interesting areas for developing offshore wind parks in Portugal • Some estuarine regions (e.g. Tagus estuary) reveal good acceptance values • Therefore, a more sophisticated study must be realized in order to deal with the presence of navigation channels, bridges and other hydro-dynamical estuarine phenomena. slide 21 of 22

  22. Concluding remarks • Results here presented aimed INETI to start a special monitoring campaign in the Peniche to Lisbon region in order to validate the results near west coast of Portugal – best resource assessment available Berlengas/Peniche • A set of high resolution numerical simulations are being prepared by INETI involving microscale and mesoscale models to produce a rigorous and highly accurate assessment for offshore wind power in Portugal FINAL

  23. Thank you!

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