Published 13.11.2025
Energiequelle prepares wind farm in Korvenneva, Merikarvia
Wind power company Energiequelle is preparing the construction of new wind turbines in cooperation with Sweco’s experts. Soil surveys and preliminary designs for foundation structures and access roads have been carried out for the Korvenneva wind farm.
Korvenneva Wind Power Project in Brief
- Client: Energiequelle
- Services: Soil surveys
- Implementation period: 2024–2025
The project assessed the feasibility of constructing wind turbines through detailed soil investigations, which determined what types of turbines could realistically be built in the area. The design focused on optimizing concrete and steel structures to ensure efficient and sustainable construction.
Feasibility studies for Energiequelle’s Korvenneva wind farm
Energiequelle is planning to build six wind turbines in Korvenneva, northeast of Merikarvia. The area, located close to the coast, is well-suited for wind power thanks to favorable wind conditions and other factors.
“Wind power construction also requires that there are no residential areas nearby and that there is a connection point to the electricity network,” says Frans-Emil Nygård, Construction Manager at Energiequelle.
The Korvenneva wind farm already has a building permit, and Energiequelle prepared for the implementation phase with Sweco’s wind power experts.
“We studied the constructability of wind turbines through soil surveys, which showed what kinds of turbines could realistically be built in the area,” says Kimmo Kontiainen, Head of Department at Sweco. He has extensive knowledge of what needs to be investigated to design wind turbine foundations correctly.
Nygård highlights Sweco’s broad expertise and experience in wind turbine design – from foundations to access roads – as the best part of the collaboration. “We had a good understanding of the entire project and expertise in every aspect of the design.”
Energiequelle surveyed the soil using MASW measurements
The soil in the area was first examined with drill samples, and this information was supplemented with soil stratification sonar, i.e., MASW measurements, on Kontiainen’s recommendation.
“Energiequelle has its own geoengineering expertise, which is why the company values thorough investigations,” Kontiainen notes. MASW measurements provide more accurate source data on the area, aiding contract estimation and potentially reducing implementation costs.
Nygård sees potential in MASW measurements: “It was interesting to see how the measurements support foundation design. Even though this time we didn’t gain any technical relief in construction from the additional data, we now know how and why to conduct these measurements.”
Optimizing wind turbine foundations
In Korvenneva, the diameter of each wind turbine foundation is around 27 meters, requiring large amounts of steel and concrete. “The construction of wind turbines is very similar to bridge infrastructure construction, which is why foundation structures should be optimized,” Kontiainen emphasizes. This saves materials and reduces carbon dioxide emissions.
The soil quality in the Korvenneva area is gravelly moraine, so gravity foundations are used. Although rock anchoring is not required, Sweco also has special expertise in rock engineering..
“We can plan wind power projects from start to finish with our own team of experts and drilling equipment,” says Kontiainen. The project can smoothly progress from soil surveys to implementation planning and construction-phase services if needed. “We can also carry out wind simulations and an EIA procedure during the planning phase.”
Next steps for the Korvenneva project
As a result of the project, Energiequelle received a foundation method statement for contract tendering. “We will start advancing the Korvenneva project as soon as the general market situation looks favorable,” Nygård says. Cooperation with Sweco will also continue, as in almost all of Energiequelle’s wind power projects.