Analysis of wind wakes for a cluster of offshore wind farms from construction to operation date using satellite observations- Anholt cluster as case study

Activity: Talks and presentationsConference presentations


Wind power becomes a reliable energy resource in almost every member of the European Union (EU). Wind Europe statistics [1] show an increased number of wind farms (113) and cumulative capacity (23.2 GW) in European waters by mid-2019. Moreover, the new offshore wind investments doubled in 2020 compared with 2019. Consequently, the offshore wind farms become concentrated in clusters and this adds new challenges.
This study exploits the abundance of Synthetic Aperture Rader (SAR) data from the European Space Agency (ESA) in order to analyze wind wakes for the Anholt cluster. The wind farms consist of 111 turbines. Analysis of satellite observations for different periods before and after the wind farm construction enables us to compare the wind conditions with/without the wind farm.
Wind retrievals from SAR Sentinel 1A/B and Envisat scenes enable wind mapping of the study area at less than 1 km resolution. The main advantage of SAR observations lies in the spatial information, which allows us to study variations in the coastal winds without any a prior knowledge.
Our analysis of SAR wind maps for different periods begins with a screening for available scenes at, from either Sentinel-1A/B or Envisat, exist for the period 2002-2020.
The attached presentation which is presented at WESC conference proves the ability of SAR to retrieve wind deficits curve before and after wind farm commissioning date.
Period25 May 202128 May 2021
Event titleWind Energy Science Conference 2021
Event typeConference
Conference number3
LocationHannover, Germany, Lower SaxonyShow on map


  • SAR wind
  • satellite wind
  • wakes