27/04/2026
What happens beneath the surface when we generate electricity at sea?
Together with the Swedish Royal Institute of Technology and the University of Southern Denmark, we are investigating whether harbour porpoises can detect electromagnetic fields created by subsea cables from offshore wind farms, and how they respond to them.
In carefully designed research studies, trained harbour porpoises take part in experiments that use only positive reinforcement and no coercion. These studies help to better understand:
– whether they can detect electromagnetic fields
– how sensitive they are to these fields
– whether this could affect their behaviour
Over the past two decades, Vattenfall has built a leading biodiversity research program called BioWins. This in‑house R&D program goes beyond regulatory requirements, aiming to understand and mitigate the impacts of wind and solar farms on nature with scientific rigor.
Vattenfall’s dedicated Bioscience Team of environmental experts provides evidence‑based guidance on biodiversity risks and opportunities, drawing on more than 60 collaborative scientific research projects conducted in close partnership with leading universities, NGOs and researchers. The research provides valuable insights into potential impacts and helps guide the sustainable design, development, and operation of wind farms.
Read more at https://group.vattenfall.com/press-and-media/newsroom/2026/unique-study-fills-gap-on-effects-from-electromagnetic-fields-on-marine-mammals/