Wind measurements at Tannenberg completed

26.10.2026 – After approximately 18 months, Axpo has completed wind measurements in the cantonal area designated for wind energy development at Tannenberg. Over the coming days, Axpo will dismantle the 125-metre high measurement mast. It recorded wind and weather data as well as bat activity. The analysis of the data will inform the ongoing feasibility assessment and project planning.

In brief:

• Axpo will dismantle the 125-metre-high wind measurement mast at Tannenberg in the coming days.
• Since April 2025, the mast has recorded wind and weather conditions as well as bat activity.
• The analysis of the measurement data will provide the basis for further project planning. Axpo will present the measurement results and next steps in the project at a public information event in spring 2027.

The wind measurement phase at Tannenberg began in April 2025. During this period, the mast recorded data at various heights on wind conditions, weather and bat activity. The data on bat activity will help assess the potential impact of a wind farm on local wildlife and identify suitable protective measures.

Next steps

The analysis of the measurement data is an important part of the ongoing feasibility assessment. Axpo will now combine the collected data with the findings of ongoing technical and logistical assessments. These include, among other things, potential transport routes and the grid connection. On this basis, Axpo will further develop the project plans.

Axpo regularly informs the Office for Spatial Development and Geoinformation of the Canton of St. Gallen, the municipalities of Waldkirch and Andwil, and local partners about the project’s progress. In spring 2027, Axpo will inform local residents about the wind measurement results and the next steps in project planning at a public information event. Experts will answer questions and be available for an open discussion.

Four wind turbines with 22 megawatts capacity 

The planned wind park at Tannenberg will consist of four wind turbines with a total capacity of approximately 22 megawatts. The systems could produce around 30 gigawatt-hours of electricity per year – equivalent to the annual electricity consumption of approximately 7,000 households.