Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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Prospects and Economics of Offshore Wind Turbine Systems

  • Pham, Thi Quynh Mai (Department of Naval Architechture and Ocean Engineering, Inha University) ;
  • Im, Sungwoo (Department of Naval Architechture and Ocean Engineering, Inha University) ;
  • Choung, Joonmo (Department of Naval Architechture and Ocean Engineering, Inha University)
  • Received : 2021.07.09
  • Accepted : 2021.08.24
  • Published : 2021.10.31
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Abstract

In recent years, floating offshore wind turbines have attracted more attention as a new renewable energy resource while bottom-fixed offshore wind turbines reach their limit of water depth. Various projects have been proposed with the rapid increase in installed floating wind power capacity, but the economic aspect remains as a biggest issue. To figure out sensible approaches for saving costs, a comparison analysis of the levelized cost of electricity (LCOE) between floating and bottom-fixed offshore wind turbines was carried out. The LCOE was reviewed from a social perspective and a cost breakdown and a literature review analysis were used to itemize the costs into its various components in each level of power plant and system integration. The results show that the highest proportion in capital expenditure of a floating offshore wind turbine results in the substructure part, which is the main difference from a bottom-fixed wind turbine. A floating offshore wind turbine was found to have several advantages over a bottom-fixed wind turbine. Although a similarity in operation and maintenance cost structure is revealed, a floating wind turbine still has the benefit of being able to be maintained at a seaport. After emphasizing the cost-reduction advantages of a floating wind turbine, its LCOE outlook is provided to give a brief overview in the following years. Finally, some estimated cost drivers, such as economics of scale, wind turbine rating, a floater with mooring system, and grid connection cost, are outlined as proposals for floating wind LCOE reduction.

Keywords

Acknowledgement

This work was supported by Korean Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of Korea (No. 20203030020230).

References

  1. Beiter, P., Musial, W., Kilcher, L., Maness, M., & Smith, A. ( 2017). An Assessment of the Economic Potential of Offshore Wind in the United States from 2015 to 2030 (Technical Report NREL/TP-6A20-67675). National Renewable Energy Laboratory. Retrieved from https://www.nrel.gov/docs/fy17osti/67675.pdf
  2. Benveniste, G., Lerch, M., Prada, M., Kretschmer, M., Berque, J., Lopez, A., & Perez, G. (2016). LIFES50+ D2.2: LCOE Tool Description, Technical and Environmental Impact Evaluation Procedure. European Union. Retrieved from https://ec.europa.eu/research/participants/documents/downloadPublic?documentIds=080166e5ad5562e8&appId=PPGMS
  3. Bjerkseter, C., & Agotnes, A. (2013). Levelised Costs of Energy for Offshore floating Wind Turbine Concepts (Master's Thesis). Norwegian University of Life Sciences, As, Norway.
  4. Bulder, B.H., Swamy, S.K., & Warnaar, P.M.J. (2021). Pathways to Potential Cost Reductions for Offshore Wind Energy (TNO report TNO 2020 R11926). Topsector Energie. Retrieved from https://www.topsectorenergie.nl/sites/default/files/uploads/Wind%20op%20Zee/Documenten/20210125_RAP_Pathways_to_potential_cost_reduction_offshore_wind_energy_F03.pdf
  5. Choi, Y.S., Ju, H.C., & Won, D.K. (2019). 국내외 균등화발전비용(LCOE) 산출방법 사례 분석 [Case Analysis of Domestic and Foreign Levelized Cost of Electricity (LCOE) Calculation Method]. Korea Electric Power Corporation Planning Division. Retrieved from http://kepcocommunication.com/006/down/13.pdf
  6. DNV GL. (2020). Floating Wind: The Power to Commercialize, Insights and Reasons for Confidence. Norway. Retrieved from https://www.energiesdelamer.eu/wp-content/uploads/2020/12/03_12-020_DNV_GL_Floating_Wind_The_Power_to_Commercialize_FINAL-compresse.pdf
  7. Equinor. (n.d.). The Future of Offshore Qind is Afloat. Retrieved from https://www.equinor.com/en/what-we-do/floating-wind.html
  8. Equinor. (2020). Equinor and ORE Catapult Collaborating to Share Hywind Scotland Operation Data. Retrieved from https://www.equinor.com/en/news/2019-11-28-hywind-scotland-data.html
  9. European Wind Energy Association (EWEA). (2016). Balancing Responsibility and Costs of Wind Power Plants. Retrieved from https://windeurope.org/fileadmin/files/library/publications/position-papers/EWEA-position-paper-balancing-responsibility-and-costs.pdf
  10. Benveniste, G., Lerch, M., Prada, M, D., Kretschmer, M., Berque, J., Lopez, A., & Perez, G., (2016). LIFES50+ D2.2: LCOE Tool Description, Technical and Environmental Impact Evaluation Procedure (Ref. Ares(2016)5798062). IREC.
  11. Harries, T., & Grace, A. (2015). Floating Wind: Buoyant Progress, Wind-Research Note. Bloomberg-New Energy Finance.
  12. Hundleby, G., Freeman, K., Logan, A., & Frost, C. (2017). Floating Offshore: 55 Technology Innovations That Will Have Greater Impact on Reducing the Cost of Electricity from European Floating Offshore Wind Farms. KiC InnoEnergy and BVG Associates.
  13. IRENA. (2019). Future of Wind: Deployment, Investment, Technology, Grid Integration and Socio-Economic Aspects (A Global Energy Transformation paper). Abu Dhabi: International Renewable Energy Agency. Retrieved from https://www.irena.org/-/media/Files/IRENA/Agency/Publication/2019/Oct/IRENA_Future_of_wind_2019.pdf
  14. Jame, R., & Costa Ros, M. (2015). Floating Offshore Wind: Market and Technology Review. UK: Carbon trust. Retrieved from https://prod-drupal-files.storage.googleapis.com/documents/resource/public/Floating%20Offshore%20Wind%20Market%20Technology%20Review%20-%20REPORT.pdf
  15. Jang, H.S. (2019). 편익이전 기법을 활용한 간헐성 전원의 계통비용 추정연구 [A Study on Estimating System Cost of Intermittent Power Supply Using Benefit Transfer Technique]. Korea Energy Economics Institute.
  16. Jung, J, H., & Lee, S, J. (2020). 부유식 해상풍력 추진 현황 및 기술개요 [Enforcement Situation of Floating Offshore Wind Power and Technology Overview]. Korea Electric Power Corporation. Retrieved from http://kepcocommunication.com/003/down/11.pdf
  17. Korea Energy Agency (2020). New & Renewable Energy White Paper (11-1410000-001321-11). Korea.
  18. Korea Energy Agency Renewable Energy Center. (n.d.). 공급의무화 (RPS) [Renewable Energy Portfolio Standard]. Retrieved from https://www.knrec. or.kr/business/rps_guide.aspx
  19. Korea Energy Economics Institute. (2019). World Energy Market Insight, 19(12), 35-36. Retrieved from http://www.keei.re.kr/keei/download/WEMI1912.pdf
  20. Korea Electric Power Corporation. (2018). 균등화 발전원가 해외사례 조사 및 시사점 분석 [A Strudy on Oversea Cases of Levelized Electricity Cost].
  21. Korea Institute of Energy Research. (2015). Korea New and Renewable Energy Resource Atlas (2nd ed.). Retrieved from http://www.kier-solar.org/pdf/getFile.do?type=WIND
  22. Lee, C.Y. (2017). 태양광 원가분석을 통한 균등화 비용 [International Comparative Analysis of Equalization Costs through Solar Power Cost Analysis]. Korea Energy Economics Institute.
  23. Lee, G. T., & Kim, K. H., (2020). 재생에너지 공급확대를 위한 중장기 발전단가(LCOE) 전망 시스템 구축 및 운영 [Mid- to Long-Term Power Generation Unit Price Forecast for Expansion of Renewable Energy Supply, System Construction and Operation]. Korea Energy Economics Institute.
  24. Lee, J., & Zhao, F. (2020). Global Offshore Wind Report 2020. Belgium: Global Wind Energy Council (GWEC). Retrieved from http://www.greenbr.org.cn/cmsfiles/1/editorfiles/files/6484a20699b340e8b16d2da0451de83a.pdf
  25. Lerch, M. (2019). LIFES50+ D2.8: Expected LCOE for Floating Wind Turbines 10MW+ for 50m+ Water Depth (Ref. Ares (2019)2889481). IREC.
  26. Ministry of Trade, Industry and Energy (2020). 주민과 함께하고, 수산업과 상생하는 해상풍력 발전 방안 [ Plan for Offshore Wind Power Generation in Collaboration with Local Residents and the Fishing Industry]. Korea.
  27. Myhr, A., Bjerkseter, C., Agotnes, A., & Nygaard, T.A. (2014). Levelised Cost of Energy for Offshore Floating Wind Turbines in a Life Cycle Perspective. Renewable Energy, 66, 714-728. https://doi.org/10.1016/j.renene.2014.01.017
  28. OECD Nuclear Energy Agency (OECD NEA). (2018). The Full Cost of Electricity Provision: Extended Summary (NEA No.7437). France. Retrieved from https://www.oecd-nea.org/upload/docs/application/pdf/2019-12/7437-full-costs-sum-2018.pdf
  29. Offshore Renewable Energy Catapult (OREC). (2019). Guide to an Offshore Wind Farm: Updated and Extended. Retrieved from https://ore.catapult.org.uk/app/uploads/2019/04/BVGA-5238-Guide-r2.pdf
  30. Offshore Renewable Energy Catapult (OREC). (2021). Floating Offshore Wind: Cost Reduction Pathways to Subsidy Free. Floating Offshore Wind Centre of Excellence. Retrieved from https://ore.catapult.org.uk/wp-content/uploads/2021/01/FOW-Cost-Reduction-Pathways-to-Subsidy -Free-report-.pdf
  31. Ramboll Group. (n.d.). COREWIND Aims to Teduce Costs for Floating Offshore Wind Turbines. Retrieved from https://ramboll.com/projects/germany/corewind
  32. Rhodri, J., & Marc, C.R. (2015). Floating Offshore Wind: Market and Technology Review. Prepared for the Scottish Government. Scotland: Carbon Trust. Retrieved fom https://prod-drupal-files.storage.googleapis.com/documents/resource/public/Floating%20Offshore%20Wind%20Market%20Technology%20Review%20-%20REPORT.pdf
  33. Samadi, S. (2017). The Social Costs of Electricity Generation-Categorising Different Types of Costs and Evaluating Their Respective Relevance. Energies, 10(3), 356. https://doi.org/10.3390/en10030356
  34. Scottish Government. (n.d.). National Development Programme: ERM Dolphyn Project. Environmental Resources Management Limited. Retrieved fom https://www.transformingplanning.scot/media/1500/083-environmental-resources-management-limited.pdf
  35. Spearman, D.K., & Strivens, S. (2020). Floating Wind Joint Industry Project - Phase II Summary Report. UK: Carbon Trust. Retrieved from https://prod-drupal-files.storage.googleapis.com/documents/resource/public/FWJIP_Phase_2_Summary_Report_0.pdf
  36. Song, S.O. (2012). 'REC'를 알아야 RPS가 보인다 [You Need to Know 'REC' to See RPS]. Green Energy Times. Retrieved from http://www.gnetimes.co.kr/news/articleView.html?idxno=19386
  37. Sun, M.Y. (2020). 해상풍력 산업과 O&M 기술을 통한 진출방안 [Offshore Wind Power Industry and Progression Plan through O&M Technology]. Proceedings of the 7th Online Market Conference on Offshore Plant Service Industry, Korea, 49-72.
  38. Swedish Wind Energy Association. (2021). Proposal for Reduced Grid Connection Costs for Offshore Wind Power. Retrieved from https://swedishwindenergy.com/press-releases/proposal-for-reduced-grid-connection-costs-for-offshore-wind-power
  39. Tyler, S., Philipp, B., & Patrick D. (2019). Cost of Wind Energy Review (NREL/TP -5000-7847). US: National Renewable Energy Laboratory. ttps://www.nrel.gov/docs/fy21osti/x78471.pdf
  40. Valpy, B., Hundleby, G., Freeman, K., Roberts, A. & Logan, A. (2017). Future Renewable Energy Costs: Offshore Wind, 57 Technology Innovations That Will Have Greater Impact on Reducing the Cost of the Electricity from European Offshore Wind Farms. BVG Associates, Inno Energy. Retrieved from https://bvgassociates.com/wp-content/uploads/2017/11/InnoEnergy-Offshore-Wind-anticipated-innovations-impact-2017_A4.pdf
  41. Weinstein, A. (2014). The WindFloat Journey: Changing the Paradigm Offshore Wind. In 23th WavEC Offshore Renewables Annual Seminar, United States - Portugal: Fostering Transatlantic Growth of Marine Renewables. Retrieved from https://www.wavec.org/contents/files/alla-weinstein-wavec-seminar-2014.pdf
  42. WindEupore. (2017). Floating Offshore Wind Vision Statement. Retrieved from https://windeurope.org/wp-content/uploads/files/about-wind/reports/Floating-offshore-statement.pdf
  43. WindEurope. (2018). Floating Offshore Wind Energy: A Policy Blueprint for Europe. Retrieved from https://windeurope.org/wp-content/uploads/files/policy/position-papers/Floating-offshore-wind-energy-a-policy-blueprint-for-Europe.pdf
  44. Wiser, R., Karen, J., Seel, J., Baker, E., & Hand, M. (2016). Forecasting Wind Energy Costs & Cost Drivers: The View of the World's Leading Experts (LBNL- 1005717). U.S. Department of Energy. Retrieved from https://www.ea-energianalyse.dk/wpcontent/uploads/2020/02/1282_Forecasting-Wind-Energy-Costs-and-Cost-drivers.pdf
  45. Wiser, R., Rand, J., Seel, J., Beiter, P., Baker, E., Lantz, E., & Giman, P. (2021). Expert Elicitation Survey Predicts 37% to 49% Declines in Wind Energy Costs by 2050. Nature Energy, 6, 555-565. https://doi.org/10.1038/s41560-021-00810-z
  46. Yoo, J.M. (2018). RPS제도 + FIT제도 = 한국형 FIT제도 [RPS Policy + FIT Policy = Korean FIT Policy]. Retrieved from http://www.energycenter.co.kr/news/articleView.html?idxno=620