Floating Wind KRA (England, Wales & NI), The Crown Estate

The suitability of areas for offshore wind development in the waters off England, Wales and Northern Ireland is the subject of ongoing assessment by The Crown Estate (TCE). In light of: i. the pace of technological change in the offshore wind sector; ii. the potential for future leasing as a response to UK Net Zero; and, iii. TCE’s responsibility to sustainably maximise the value of the seabed it manages, Everoze has been engaged by TCE to develop an updated methodology for characterising Key Resource Areas reflecting the latest and anticipated future technological developments in the sector out to a deployment date of 2040. A Key Resource Area (KRA) defines areas of seabed suitable for offshore wind development based on technology availability over a given timeframe. It is not intended to capture other factors vital to identifying suitability for development (e.g. other seabed uses, environmental constraints, etc.). These additional sensitivities will be considered in successive stages through further analysis by TCE in due course that build upon the KRA identification. In the context of a maturing sector, the methodology for KRA identification has moved away from classifying areas of seabed as Favourable, Limited and Marginal – as has been the case in previous KRA reviews - and towards identifying Technology Groups which characterise technical solutions for a given set of physical site drivers. This data presents the spatial analysis outputs of the criteria defined in the report by Everoze (Characterisation of Key Resource Areas for Offshore Wind – A Report for The Crown Estate, October 2020) for floating offshore wind and should be used in conjunction with the associated report which provides the context and justification to these spatial outputs. The study was run to the waters off England, Wales and Northern Ireland. Below are the criteria used for each floating wind Technology Group defined: TG1 – Conventional Anchoring-Moderate Sea State – Depth 50-250m, Quaternary Thickness >20m, Hs50 < 14m TG2 – Conventional Anchoring-Onerous Sea State – D 50-250m, QT >20m, Hs50 >14m TG3 – Complex Anchoring-Moderate Sea State – D 50-250m, QT 5-20m – Hs50 <14m TG4 – Complex Anchoring-Onerous Sea State – D 50-250m, QT 5-20m, Hs50 >14m TG5 – Pile/Socket Anchoring-Moderate Sea State – D 50-250m, QT <5m, Hs50 <15m TG6 – Pile/Socket Anchoring-Onerous Sea State – D 50-250m, QT <5m, Hs50 <15m There is a global 9m/s minimum windspeed adopted. Datasets used in the analysis: Quaternary Thickness – BGS Wind Speed – Met Office 2015 UK Offshore Wind Resource Bathymetry – Oceanwise Marine DEM 1 arc sec, and GEBCO World Bathymetry (in areas not covered otherwise) Metocean – ABPmer Hs50 This data has been prepared by The Crown Estate using the criteria provided by Everoze Partners Limited in the report ‘Characterisation of Key Resource Areas for Offshore Wind’, October 2020. The data is provided for information purposes only and no party may rely on the accuracy, completeness or fitness of its content for any particular purpose. The Crown Estate makes no representation, assurance, undertaking or warranty in respect of the analysis in the report and thus the associated spatial data outputs英国王室地产（The Crown Estate, TCE）目前正在对英格兰、威尔士及北爱尔兰周边海域的海上风电开发场地适宜性开展持续评估。基于以下三方面背景：其一，海上风电领域技术迭代速度持续加快；其二，为响应英国净零（Net Zero）战略，未来存在海上风电租赁需求；其三，英国王室地产肩负对其管理海床实现可持续价值最大化的职责，因此委托Everoze开发一套更新版关键资源区（Key Resource Area, KRA）表征方法，以适配截至2040年的行业最新及预期未来技术发展态势。 关键资源区（Key Resource Area, KRA）指基于特定时段内的技术可用性，划定适宜海上风电开发的海床区域。该方法未涵盖影响开发适宜性的其他关键因素（如其他海床利用需求、环境约束条件等），此类额外敏感性因素将由英国王室地产后续依托关键资源区识别结果，通过多阶段深化分析予以考量。 随着海上风电行业逐步成熟，关键资源区识别方法已不再沿用过往评估中“适宜、有限、边际”的海床分级方式，转而通过划定技术组（Technology Groups）来表征针对特定物理场地驱动因素的技术解决方案。 本数据集呈现了Everoze于2020年10月发布的报告《Characterisation of Key Resource Areas for Offshore Wind – A Report for The Crown Estate, October 2020》中所定义的浮式海上风电（floating offshore wind）空间分析成果，使用时需结合配套报告一同参考，该报告对本次空间分析成果的背景与依据进行了详细说明。本次研究覆盖范围为英格兰、威尔士及北爱尔兰周边海域。 本次研究划定了以下浮式风电技术组及其判定标准： TG1——传统锚固模式—中等海况——水深50-250m，第四纪厚度>20m，50年一遇有效波高（Hs50）<14m TG2——传统锚固模式—严苛海况——水深50-250m，第四纪厚度>20m，50年一遇有效波高（Hs50）>14m TG3——复合锚固模式—中等海况——水深50-250m，第四纪厚度5-20m，50年一遇有效波高（Hs50）<14m TG4——复合锚固模式—严苛海况——水深50-250m，第四纪厚度5-20m，50年一遇有效波高（Hs50）>14m TG5——桩承/套接锚固模式—中等海况——水深50-250m，第四纪厚度<5m，50年一遇有效波高（Hs50）<15m TG6——桩承/套接锚固模式—严苛海况——水深50-250m，第四纪厚度<5m，50年一遇有效波高（Hs50）<15m 本次分析全球统一采用9m/s的最低风速阈值。 本次分析采用的数据集包括： 第四纪厚度——英国地质调查局（BGS）数据 风速——英国气象局（Met Office）2015年数据集 海上风电资源水深——Oceanwise海洋数字高程模型（Marine DEM）1弧秒数据，以及通用大洋测深图（GEBCO）世界水深数据（在无其他覆盖数据的区域使用） 海洋气象参数——ABPmer 50年一遇有效波高（Hs50）数据集 本数据集由英国王室地产依据Everoze Partners Limited于2020年10月发布的报告《Characterisation of Key Resource Areas for Offshore Wind》中的标准编制完成。本数据仅用于信息参考，任何方均不得就其内容的准确性、完整性或特定用途适用性提出依赖。英国王室地产不对报告中的分析及相关空间数据成果作出任何陈述、保证、承诺或担保。