Utilitas Wind has selected Finnish wind energy service provider Arenso Oy to prepare the basic design for the 1.2GW Saare-Liivi offshore wind project in Estonia.
Work commenced in February 2025 and will be completed by the end of July.
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The objective of the collaboration between Arenso and Utilitas Wind is to develop a basic design package that will support future design phases, permitting activities, construction planning and operational preparations.
Utilitas Wind is progressing with the planning and design work for the Saare-Liivi offshore wind farm, with plans to install 80 wind turbines in the first phase of development.
The offshore wind facility will have 5 terawatt hours (TWh) of clean energy generation capacity annually.
The wind project is co-financed by the European Climate, Infrastructure and Environment Executive Agency.
Arenso Oy was established in 2024 following the demerger of Suomen Hyötytuuli, with Suomen Hyötytuuli personnel transferred to Arenso.
It currently operates the Tahkoluoto offshore wind farm, Finland’s first offshore wind farm and the first in the world in frozen sea conditions.
The company is working on the Tahkoluoto Extension project, which is anticipated to become operational in 2029.
In 2024 Utilitas generated 2.6TWh of energy, with 71% of this production from renewable sources.
Utilitas is pursuing carbon neutrality by expanding renewable energy capacity, investing in solar and wind, and launching its first green hydrogen pilot project.
Arenso Oy business director Esa Holttinen stated: “Arenso brings its proven, hands-on expertise of Northern Baltic Sea offshore wind energy to the Saare-Liivi project, laying the groundwork for a technically optimised and competitive wind farm implementation.
“Utilitas Wind, as a leading wind energy player in the Baltic states, is a strategically important customer for Arenso. The agreement is also a ground-breaking step in importing Finnish know-how to offshore wind projects globally.”
