Fraunhofer IWES has completed a metocean and wind measurement campaign in Liivi Bay, Estonia for Enefit’s Liivi Offshore Wind Farm project.
The campaign ran from October 2024 to December 2025 and used a Stage 3+ Wind Lidar Buoy with oceanographic sensors to collect wind, wave and current data, Fraunhofer IWES said.
It marked the first commercial campaign to obtain advanced turbulence intensity measurements using the institute’s high-frequency deterministic motion compensation method, the company added.
A land-based lidar measurement and wind modelling were also carried out to support the dataset.
The floating lidar buoy was temporarily removed during the sea ice season to prevent damage.
A parallel onshore lidar campaign on Kihnu Island and horizontal transfer modelling were used to maintain data continuity and complete the dataset.
Floating lidar systems are widely used by the wind industry to provide accurate offshore resource measurements with minimised uncertainty.
“Liivi Bay represents a strategically important location for the development of offshore in the Baltic region. The insights gained from this measurement campaign will support Enefit in advancing offshore wind capacity that enhances regional energy security and accelerates the transition to a cleaner, more efficient energy system”, said Johann-Gustav Lend, baltics business development manager at Enefit.
“The Fraunhofer IWES project team was delighted to deliver the technically important Turbulence Intensity measurements based on our own step-up into high-frequency Line-of-Sight motion compensation, bringing the benefit of applied research to the industry as per Fraunhofer’s mission”, said Loïs Legendre, project manager wind measurement at Fraunhofer IWES.
Riigilaevastik (Estonian State Fleet) and Luode Consulting also supported the campaign, providing vessel operations and oceanographic measurements.
“For the Estonian State Fleet, active participation in scientific research and monitoring activities in national waters is highly important, including making state fleet resources available to support such work,” said Andres Laasma, director general of the Estonian State Fleet.