Abstract: Provided is a wind turbine, including a tower, a foundation, a transition piece, which is arranged between the tower and the foundation and which connects the tower to the foundation, a platform, which is arranged inside the transition piece, a service lift, which is lowered to the platform, and a permanent working platform which is arranged below the platform and in a distance thereof. Due to the permanent working platform, the service lift is easily accessible from below. The labor- and cost-intensive installation of a temporary scaffold below the platform is expendable. Advantageously, the working platform can also be used for array cable installation.

Abstract: Provided is a wind turbine, including a tower, a foundation, a transition piece, which is arranged between the tower and the foundation and which connects the tower to the foundation, a platform, which is arranged inside the transition piece, a service lift, which is lowered to the platform, and a permanent working platform which is arranged below the platform and in a distance thereof. Due to the permanent working platform, the service lift is easily accessible from below. The labor- and cost-intensive installation of a temporary scaffold below the platform is expendable. Advantageously, the working platform can also be used for array cable installation.

Abstract: A steel tower for a wind turbine with a plurality of segments arranged above each other is provided. The segments include steel having different qualities. The quality of the steel is determined by a yield limit of the steel.

Abstract: A method is provided for the production of tower segments, which are used to assemble a wind turbine tower. The method includes providing a sheet steel, cutting the sheet steel into a plurality of steel plates, cutting at least one opening in the plurality of steel plates, and bending the steel plates into a desired shape. The steps are performed in a continuous process, such that the steel plates move from one step in the production to the next.

Abstract: A method of optimising a construction of a basis of a wind turbine is provided. A local load environment situation of a construction location is analysed, which results in local load-relevant environment data, based on which construction instructions are generated. These are further based on a set of predefined rules for processing the local load-relevant environment data, such that in a first selected region of the basis along a circumference of the tower and/or in a first selected region of the foundation the carrying structure of the basis is weakened in at least one selected horizontal cross-section with respect to possible maximum loads in comparison with a second region of the basis in the selected cross-section.

Abstract: A wall portion for a tower of a wind turbine is provided. The wall portion has a first wall segment having a first flange at a lateral side of the first wall segment; a connection plate having a surface portion being mounted at a front side surface portion of the first wall segment; a second wall segment having a second flange at a lateral side of the second wall segment; and a third wall segment. The second flange is mechanically connected to the first flange. The connection plate protrudes an edge at another lateral side of the first wall segment. Another surface portion of the connection plate is mounted at a front side surface portion of the third wall segment and the connection plate protrudes an edge at a lateral side of the third wall segment.

Abstract: A method for connecting metal segments of a tower includes connecting at least two metal segments of the tower by the use of connecting elements. A paste is provided between the tower segments for filling at least a part of a gap between the segments. The paste is cured, wherein the cured paste absorbs at least a part of a load originated by the connected segments.

Abstract: A steel tower for a wind turbine with a plurality of segments arranged above each other is provided. The segments include steel having different qualities. The quality of the steel is determined by a yield limit of the steel.