Geospatial analysis was performed globally using the "Renewables.ninja" modelling tool based on the latest reanalysis of satellite data by the European Centre for Medium-Range Weather Forecasts (ECMWF) (ERA-5). Regions with wind speeds of less than 5 m/s were excluded from the analysis. Power curves corresponding to specific power output at different wind speeds were implemented for the latest turbine designs (up to 10 MW) and synthesised for designs up to 20 MW for which data are not yet available.

Areas available for offshore wind development excluded areas that are specified for competing uses (i.e. fishing, shipping, defence, and oil and gas exploration and production) and environmental protection (excluding Marine Projection Areas classified by the International Union for Conservation of Nature [IUCN]). Areas close to submarine cables and earthquake fault lines were also excluded.

For more information of the methodology, please refer to the Annex B of the report.