Sonkajärvi In development

Huttusenlehto in numbers

150-200 + 150 MW + MWp

Total power


Number of turbines (max.)

350 M

Tip height (max.)


To be operational


At the end of 2021, Ilmatar started exploring the possibility of building a wind farm in the Huttusenlehto area of Sonkajärvi. A comprehensive preliminary study of the project area was carried out and a land lease for the project area was initiated. Ilmatar started investigating the possibility of integrating solar power into the project on a peat production area near the wind farm in spring 2023.

The wind power project area has an initial area of around 2,700 hectares and the solar power area will cover an area of around 190 hectares. The final number of wind turbines, their placement and the area to be covered by the scheme will be clarified in the coming years during the planning and environmental impact assessment process. The final outcome of the planning process will be influenced by, among other things, studies, opinions, comments and stakeholder consultations during the planning and EIA process.

Ilmatar is promoting the Huttusenlehto wind and solar power project through Ilmatar Sonkajärvi Oy.

Current status

On 17 January 2024, Ilmatar submitted a zoning initiative to Sonkajärvi Municipality to draw up a sub-planning for the Huttusenlehdo wind and solar power area in Sonkajärvi. The Municipal Council decided on 5.2.2024 § 10 to approve the conclusion of a zoning and cooperation agreement between Sonkajärvi Municipality and Ilmatar Sonkajärvi Oy. FCG Finnish Consulting Group will act as the consultant for the planning and environmental impact assessment of the project. The planning and EIA process will take approximately 2 years.

The nature surveys for the project started in spring 2024 and the project’s participation and assessment plan and EIA programme will be published later in 2024.

Further information

Henna Hyttinen
Project Development Manager
+358 44 033 2607
[email protected]