Fixed 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 fixed 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 fixed wind Technology Group defined: TG1 – Jacket-Suction - Depth 20-70m, Quaternary Thickness >20m, Quaternary Lithology All but Diamict, Sediment Type (g)mS, mS, (g)S or S TG2A - Monopile-Driven-Low – D10-45m, QT >50m TG2B – Monopile-Driven-High – D10-45m, QT 5-50m, Bedrock Lithology Only Weak TG3A – Monopile-3D-High – D10-45m, QT 5-50m, BL Only Medium TG3B - Monopile-3D-High – D10-45m, QT 5-50m, BL Only High TG4A – Jacket-Driven-Low – D45-70m, QT >50m TG4B – Jacket-Driven-High – D45-70m, QT 5-50m, BL Only Weak TG5A – Jacket-3D-Low – D45-70m, QT 5-50m, BL Only Medium TG5B – Jacket-3D-High – D45-70m, QT 5-50m, BL Only Hard TG6A – Monopile-Socket-Low – D10-45m, QT <5m, BL All but Hard TG6B – Monopile-Socket-High – D10-45m, QT <5m, BL Only Hard TG7A – Jacket-Socket-Low – D45-70m, QT <5m, BL All but Hard TG7B – Jacket-Socket-High – D45-70m, QT <5m, BL Only Hard Bedrock Lithology identification: Hard - Igneous (Ig), Palaeozoic (Pal) or Metamorphic (Met) Medium – All but soft or hard Weak – Chalk (Ch), Mesozoic mudstones(Mm) & Tertiary Interbedded(Ti) There is a global 9m/s minimum windspeed adopted. Datasets used in the analysis: Quaternary Thickness – BGS Quaternary Lithology – BGS Bedrock Lithology – BGS Seabed Sediments – 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) 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.英国皇家地产（The Crown Estate, TCE）正对英格兰、威尔士及北爱尔兰周边海域的海上风电开发适宜性区域开展持续评估。基于以下三方面背景：其一，海上风电行业的技术迭代速度；其二，为响应英国净零目标，未来或开展海上风电租赁业务的潜在需求；其三，英国皇家地产肩负的可持续最大化其所管理海床价值的责任，该机构委托Everoze公司更新一套关键资源区（Key Resource Area, KRA）表征方法，以适配截至2040年该行业最新及预期的未来技术发展。 关键资源区（KRA）指基于特定时间窗口内的技术可用性，划定适合海上风电开发的海床区域。该区域划定未纳入影响开发适宜性的其他关键因素（如其他海床利用需求、环境约束等），此类额外敏感性因素将由英国皇家地产后续通过递进式分析逐步纳入，基于关键资源区的识别结果开展后续工作。 随着海上风电行业日趋成熟，关键资源区的识别方法已不再沿用过往评审中采用的“适宜、有限、边际”三级海床分类模式，转而转向识别技术组（Technology Groups）——即针对特定物理场地驱动因素表征技术解决方案的分类体系。 本数据集呈现了Everoze于2020年10月发布的《海上风电关键资源区表征——致英国皇家地产的报告》中所定义的固定式海上风电相关空间分析结果，需结合该报告一同使用，报告为本次空间分析结果提供了背景与依据。本次研究覆盖英格兰、威尔士及北爱尔兰周边海域。 以下为各固定式风电技术组的判定标准： TG1 – 导管架-吸力桩式：水深20-70m，第四纪沉积厚度>20m，第四纪岩性除混杂堆积（Diamict）外均满足，沉积物类型为(g)mS、mS、(g)S或S TG2A – 打入式单桩低适配型：水深10-45m，第四纪厚度>50m TG2B – 打入式单桩高适配型：水深10-45m，第四纪厚度5-50m，且仅基底岩性为弱岩性 TG3A – 三维打入式单桩高适配型：水深10-45m，第四纪厚度5-50m，基底岩性仅为中等岩性 TG3B – 三维打入式单桩高适配型：水深10-45m，第四纪厚度5-50m，基底岩性仅为硬岩性 TG4A – 导管架打入式低适配型：水深45-70m，第四纪厚度>50m TG4B – 导管架打入式高适配型：水深45-70m，第四纪厚度5-50m，基底岩性仅为弱岩性 TG5A – 三维导管架低适配型：水深45-70m，第四纪厚度5-50m，基底岩性仅为中等岩性 TG5B – 三维导管架高适配型：水深45-70m，第四纪厚度5-50m，基底岩性仅为硬岩性 TG6A – 嵌岩式单桩低适配型：水深10-45m，第四纪厚度<5m，基底岩性除硬岩外均满足 TG6B – 嵌岩式单桩高适配型：水深10-45m，第四纪厚度<5m，基底岩性仅为硬岩性 TG7A – 嵌岩式导管架低适配型：水深45-70m，第四纪厚度<5m，基底岩性除硬岩外均满足 TG7B – 嵌岩式导管架高适配型：水深45-70m，第四纪厚度<5m，基底岩性仅为硬岩性 基底岩性分类标准如下： 硬岩性：火成岩（Igneous, Ig）、古生代岩（Palaeozoic, Pal）或变质岩（Metamorphic, Met） 中等岩性：除软岩与硬岩外的其余类型 弱岩性：白垩（Chalk, Ch）、中生代泥岩（Mesozoic mudstones, Mm）及第三系互层沉积（Tertiary Interbedded, Ti） 本次分析全局采用9m/s的最低风速阈值。 本次分析使用的数据集如下： 第四纪沉积厚度——英国地质调查局（British Geological Survey, BGS）数据 第四纪岩性——英国地质调查局数据 基底岩性——英国地质调查局数据 海床沉积物——英国地质调查局数据 风速——英国气象局（Met Office）2015年英国近海风电资源数据 水深地形——Oceanwise Marine DEM 1弧秒数据，未覆盖区域采用GEBCO全球水深地形数据 本数据集由英国皇家地产根据Everoze Partners Limited于2020年10月发布的《海上风电关键资源区表征》报告中的标准编制而成。本数据仅用于信息参考，任何方均不得因任何特定用途而依赖其内容的准确性、完整性或适用性。英国皇家地产不对报告中的分析及相关空间数据输出作出任何陈述、保证、承诺或担保。