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Scoping ‘Areas of Search’ Study for offshore wind energy in Scottish Waters, 2018

DescriptionScoping ‘Areas of Search’ Study for offshore wind energy in Scottish Waters, 2018 describes the process to identify Areas of Search to potentially be developed into Draft Plan Options for Offshore Wind.
ISBN9781788519601
Official Print Publication Date
Website Publication DateJune 13, 2018

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ISBN 978 1 78851 960 1 (web only publication)
PPDAS 424966

This document is also available in pdf format (4 MB)
The respondent information form and consultation questionnaire are available in Word format (155 KB)

Contents

Executive summary

1 Introduction
1.1 Potential for offshore wind in Scotland
1.2 The Scottish Sectoral plan for offshore wind: Scoping study 2011
1.3 Updating the offshore wind scoping study for 2018

2 Models generated for the scoping study 2018
2.1 Exclusion Model
2.2 Constraint model

3 Methodology
3.1 Reclassification of layers to three classes
3.2 Overlay procedure
3.3 Relative influence of layers
3.4 Data
3.5 Description of layers used to create the constraint model
3.5.1 Resource
3.5.2 Grid connection
3.5.3 Depth
3.5.4 Sediment type
3.5.5 Nature protected areas
3.5.6 Fishing activity
3.5.7 Sea and coast based leisure activities
3.5.8 Military exercise areas
3.5.9 Shipping
3.5.10 Aviation
3.5.11 Seabirds and cetaceans
3.5.12 Fish life history layers

4 Opportunities for offshore wind
4.1 East Coast. Including SORER Areas North, North East and East
4.2 North Coast. Including SORER Areas North and North West
4.3 West coast. Including SORER Areas North West and West
4.4 Orkney and Shetland. Including SORER Area North

5 Sensitivity analysis

6 Further processing of the AoS
6.1 Detailed description of the modifications applied to the initial AoS
6.1.1 South West
6.1.2 West
6.1.3 North West
6.1.4 North
6.1.5 North East
6.1.6 East

7 Conclusion

8 Technical Annex
8.1 GIS Processing
8.2 Data classification approach

9 Responding to this Consultation

10 Respondent Information Form

11 Literature and website resources referenced
11.1 Cited literature
11.2 Cited websites

Table of figures

Figure 1: Areas of search resulting from selecting broad sites of minimised constraint from the multi-criteria analysis output. These have been further refined to ensure a minimised level of interaction with existing activities and users by considering the spatial extent of shipping traffic, fishing, designated nature protection areas . © Crown copyright and database rights (2018) OS (100024655).

Figure 2: SORER limits. © Crown copyright and database rights (2018) OS (100024655).

Figure 3: Results of the MaRS multi-criteria analysis study for the offshore wind scoping study of 2011. Combined output from the three themes (environmental, industrial and socio-cultural) weighted equally for the three themes. © Crown Copyright 2011.

Figure 4: Exclusion model as generated using combined spatial layers that are considered incompatible with offshore wind developments. © Crown copyright and database rights (2018) OS (100024655).

Figure 5: Wind resource in Scottish waters. Wind speed data were taken from ABPMer Renewables Atlas website. © Crown copyright and database rights (2018) OS (100024655). Atlas of UK Marine Renewable Energy Resources. 2008. ABPMer. December 2017. Reproduced from http://www.renewables-atlas.info/ © Crown Copyright.

Figure 6: Distance bandings created from electrical substations. Substation spatial information has been taken from National grid. Important cable landings have also been included. The Key cable landings layer was created and classified in the same manner. © Crown copyright and database rights (2018) OS (100024655).

Figure 7: Bathymetry of Scottish waters. © Crown copyright and database rights (2018) OS (100024655). © Crown Copyright, 2018. All rights reserved. License No. EK001-20140401.

Figure 8: Bathymetry of Scottish waters separated into depth bandings to help visualisation of the relative area at each depth range. © Crown copyright and database rights (2018) OS (100024655). © Crown Copyright, 2018. All rights reserved. License No. EK001-20140401.

Figure 9: Sediment types on Scottish waters. Data from British Geological Survey. © Crown copyright and database rights (2018) OS (100024655). © Crown Copyright, 2018. All rights reserved. License No. EK001-20140401.

Figure 10: All of the offshore and coastal nature protected designations that have been included into the multi-criteria analysis. © Crown copyright and database rights (2018) OS (100024655). © Crown copyright. All rights reserved. Joint Nature Conservation Committee Support Co 2018.

Figure 11: Fishing activity by monetary value including data from VMS and from Scotmap as well as supplementary landings information for the inshore fishing data. The data period mapped was 2007-2011. © Crown copyright and database rights (2018) OS (100024655).

Figure 12: Combined coast and sea-based activities density map taken from the Scottish Marine Recreation and Tourism Survey (2016). © Crown copyright and database rights (2018) OS (100024655).

Figure 13: Military exercise areas. © Crown copyright and database rights (2018) OS (100024655). © Crown Copyright, 2018. All rights reserved. License No. EK001-20140401. Not to be used for Navigation.

Figure 14: Annual mean shipping density as calculated by ABPMer for the year 2015. © Crown copyright and database rights (2018) OS (100024655). © ABPMer copyright (2018) http://www.abpmer.net/downloads/default.asp?location=ArcGIS_Online&request=2015_AIS.

Figure 15: Radar interference taken from the NATS self-assessment website and helicopter flight routes to oil and gas locations. © Crown copyright and database rights (2018) OS (100024655) © NATS copyright (2018) https://www.nats.aero/services/information/wind-farms/self-assessment-maps/.

Figure 16: Vulnerability to collision of seabirds during the breeding season. © Crown copyright and database rights (2018) OS (100024655).

Figure 17: Vulnerability to collision of seabirds during the winter season. © Crown copyright and database rights (2018) OS (100024655).

Figure 18: Overall cetacean density distribution created from individual cetacean distribution maps. © Crown copyright and database rights (2018) OS (100024655).

Figure 19: Extent and overlap amount of spawning areas for 11 species listed in (CEFAS, 1998) (cod and haddock excluded as their spawning locations have been updated). © Crown copyright and database rights (2018) OS (100024655).

Figure 20: Spawning area preferences of cod from (Gonzalez-Irusta and Wright, 2015). This modelling was restricted to the east and north coasts of Scotland. © Crown copyright and database rights (2018) OS (100024655).

Figure 21: Probability of encountering spawning haddock from (González-irusta and Wright, 2016). © Crown copyright and database rights (2018) OS (100024655).

Figure 22: Probability of encountering aggregations of fish in the first year of life from Aires et al. (2014). © Crown copyright and database rights (2018) OS (100024655).

Figure 23: Overall constraint, all themes equally weighted, and exclusion areas with the broad AoS. © Crown copyright and database rights (2018) OS (100024655).Table 3: AoS numbered, area in km2 and SORER area occupied.

Figure 24: Constraint output with the environmental layer set weighted at twice as much as the rest of the layers. © Crown copyright and database rights (2018) OS (100024655).

Figure 25: Constraint output with the industrial layer set weighted at twice as much as the rest of the layers. © Crown copyright and database rights (2018) OS (100024655).

Figure 26: Constraint output with the socio-cultural layer set weighted at twice as much as the rest of the layers. © Crown copyright and database rights (2018) OS (100024655).

Figure 27: Constraint output with the technical layer set weighted at twice as much as the rest of the layers. © Crown copyright and database rights (2018) OS (100024655).

Figure 28: Revised AoS to account for the forseeable impacts of single issue activities. This includes fishing, shipping traffic, oil and gas infrastructure and overlap with designated nature protected areas. © Crown copyright and database rights (2018) OS (100024655).

Figure 29: Detail of the south west SORER area. No AoS have been identified at this location. © Crown copyright and database rights (2018) OS (100024655).

Figure 30: Detail of the west SORER area showing how AoS 6 has been modified. © Crown copyright and database rights (2018) OS (100024655).

Figure 31: Detail of the north east SORER area showing how area 4 has been modified. © Crown copyright and database rights (2018) OS (100024655).

Figure 32: Detail of the north SORER area showing the modifications to AoS 3, AoS 4 and part of AoS 2. © Crown copyright and database rights (2018) OS (100024655).

Figure 33: Detail of the north SORER area showing the modifications to AoS 1 and 2. © Crown copyright and database rights (2018) OS (100024655).

Figure 34: Detail of the north east SORER area showing the modifications to AoS 3 and 5. © Crown copyright and database rights (2018) OS (100024655).

Figure 35: Detail of the east SORER region showing the modifications to the southern part of AoS 5. © Crown copyright and database rights (2018) OS (100024655).

Figure 36: Reclassification of the fishing layer by using the 'Quantile' classification method.

Figure 37: Fishing value layer pre-reclassification showing the range of values described by a range of colour hues. © Crown copyright and database rights (2018) OS (100024655).

Figure 38: Fishing layer after reclassification into three classes. © Crown copyright and database rights (2018) OS (100024655).

Table of tables

Table 1: This table lists the refined AoS and the SORER area that they predominantly occupy.

Table 2: GIS layers of spatial information used in the updated scoping study and the scoping study (Davies and Watret, 2011)

Table 3: AoS numbered, area in km2 and SORER area occupied.

Table 4: Matrix showing combinations of weightings per theme. In turn each theme has been weighted twice as high as the three others to assess the effect this has on the overall output.

Table 5: Names and area in km2 of the revised AoS, the SORER area in which most of their area falls into is indicated also.