The present invention relates to an elongate member and methods of its formation and assembly, the elongate member constructed of a stacked sequence of adjacent sections, the elongate member comprising, at each interface of adjacent sections, a lower seat member of an upper more of said adjacent sections, and an upper seat member of a lower more of said adjacent sections, wherein said upper and lower seat members at each interface having been match-cast as a seat member pair and seated with each other in the same relative position as the relative position the seat member pair was match-cast in.

A foundation for a tower includes a plurality of ballast holders spaced from each other and a central portion configured to support a tower. The foundation includes a plurality of connecting members, each connecting member configured to attach a ballast holder to the central portion, wherein a length of the plurality of connecting members is determined based upon the load capacity required to retain the tower in a vertical position, wherein when the plurality of ballast holders is connected to the central portion, the central portion is elevated above the plurality of ballast holders, wherein different lengths of the connecting members expands and contracts the footprint of the foundation to match the foundation to the required maximum loading requirements.

A portable power generation system having a transportable structure can include a wind turbine having a tower mounted to the transportable structure configured to allow erection from within the transportable structure. It can also include a solar panel array pivotally connected to the structure that is expandable to an in use configuration in which the expanded solar panel is inclined to a side of the transportable structure.

A tower-like structure is provided for a wind turbine. The tower-like structure includes at least one lower component and one upper component which is in part placed over the lower component to form a slip joint. The upper and the lower component each have a conical component section. The upper and the lower component also each have at least one further component section which jointly forms the slip joint and which, when viewed transversely with respect to a central longitudinal axis of the structure, is located above and/or below the conical component section. The surface perpendiculars of the further component sections intersect the longitudinal axis at an angle (a) greater than the surface perpendiculars of the conical component section.

A tower for a wind turbine extending axially along a longitudinal axis of the wind turbine includes a rail attached to an external surface of the tower, the rail providing a guide to which a service trolley is attachable in order to be movable along the rail. The tower includes: a plurality of axially adjacent tower segments, each tower segment extending axially between two axial ends, a respective flange being provided at one or both of the axial ends for connecting the respective tower segment to another tower segment. The rail is provided at the flange.

A method for the arrangement of at least one component during the installation of a wind turbine is provided, wherein the component is releasably attached to a tower segment prior to a coupling of the tower segment to a tower segment support structure, wherein the tower segment forms at least a section of a tower of the wind turbine to be installed and wherein the component is attached to an attachment area at the outer surface of the tower segment, wherein the component is moved from the attachment area to an arrangement position after coupling of the tower segment to the tower segment support structure.

Disclosed are a load dispersion-type indoor lifting apparatus for a prefabricated steel structure, and a method of installing a prefabricated steel structure by using the same. The load dispersion-type indoor lifting apparatus for a prefabricated steel structure disclosed herein includes a moving cart, a support frame configured to be mounted on the moving cart, a lifting frame configured to be mounted on the support frame, and a plurality of stacker systems configured to lift up the lifting frame while pushing the support frame down.

A method for manufacturing a tower structure of a wind turbine includes printing, via an additive printing device, a plurality of concentric sections of the tower structure of the wind turbine. The concentric sections may be printed simultaneously from concrete, may include tensioning cables or other structural supports, and may define other support flanges or overhangs. After curing, the method may include raising an inner section of the plurality of concentric sections to a top of an adjacent outer section and joining the two sections. This process may be repeated to telescope the concentric sections and raise the tower structure.

A method for manufacturing a tower structure of a wind turbine includes printing, via an additive printing device, a plurality of concentric sections of the tower structure of the wind turbine. The concentric sections may be printed simultaneously from concrete, may include tensioning cables or other structural supports, and may define other support flanges or overhangs. After curing, the method may include raising an inner section of the plurality of concentric sections to a top of an adjacent outer section and joining the two sections. This process may be repeated to telescope the concentric sections and raise the tower structure.

A method for installing or mounting a tower is formed by the stacking of two or more mounting groups on a base section. At least one of said mounting groups is formed by a plurality of stacked segments. Said method includes arranging the base section in the definitive position thereof on the ground and lifting and placing the mounting groups of the tower on the base section by means of a mounting crane that can adopt different jib configurations. Advantageously, in said method, at least two or more stacked segments are installed consecutively in the corresponding mounting group with one and the same crane jib configuration. The length of the lowest stacked segment of said mounting group is smaller than the length of at least another stacked segment of the aforementioned mounting group.