Offshore wind power offers a renewable and inexhaustible energy source, generating electricity without emitting greenhouse gases. Its role is vital in addressing climate change and reducing greenhouse gas emissions.

Fixed-foundation offshore wind farms are the most prevalent and mature type of offshore renewable technology, with a cumulative installed capacity of nearly 34 GW as of the end of 2019. Thanks to research and development, these turbines are regularly installed in water depths of up to 40 meters, occasionally reaching up to 60 meters. They can be positioned up to 80 kilometres from the shore.

Offshore wind power offers several advantages:

  • Distance from Local Populations: Offshore wind farms are typically far from populated areas. This distance eliminates concerns about noise from the rotation of the wind turbine blades and reduces the impact on local environments.
  • Space for Expansion: The vastness of the offshore environment provides ample space to increase the number of wind farms significantly. This expansion can dramatically increase the supply of clean energy to homes and businesses, contributing to net-zero targets.
  • Job Creation: The development, installation, and maintenance of offshore wind farms create numerous jobs—these range from engineering and construction to operations and maintenance, contributing to economic growth.
  • Cost-Efficiency: Offshore wind power is clean, green and cost-efficient. Reducing electricity production costs from offshore wind farms can lead to lower consumer electricity bills.

Offshore wind: what new technologies are available?

  • Floating wind farms: Floating offshore wind turbines represent an innovative development in wind technology. Tethered to the seabed, these turbines can be placed further out in deeper waters where wind conditions are more favourable. This positioning enhances the capacity of offshore wind power.
  • Taller wind turbines: The advent of taller wind turbines, equipped with larger blades, is set to transform the offshore wind industry. These structures capture wind energy more efficiently due to their height and blade size. This increases the power output of individual turbines and improves the overall capacity and efficiency of offshore wind farms, significantly contributing to renewable energy generation.
  • Multi-purpose interconnectors (MPIs): MPIs significantly change the offshore wind industry. Instead of connecting individual wind farms to the shore one by one, MPIs enable clusters of offshore wind farms to connect simultaneously. This technology also facilitates the integration of these wind farms into the energy systems of neighbouring countries, simplifying the process of sharing clean energy across borders.
  • Energy Islands: Energy Islands will play a part in the evolution of offshore wind infrastructure by acting as state-of-the-art clean energy hubs. They will enable the connection of offshore wind to multiple countries via MPIs while also serving as a platform for producing and delivering green hydrogen.

Conclusion

Offshore wind energy, leveraging sea winds for clean electricity, is pivotal in sustainable energy efforts. Its benefits include low local impact, expansion potential, job creation, and cost efficiency. Innovations like floating farms and taller turbines enhance its role in the renewable energy landscape.