Tower base assembly for a wind turbine

A pre-assembled tower base assembly for a wind turbine configured for transportation to a wind turbine site in an upright position, the tower base assembly comprising:

• a tubular side wall comprising a plurality of annular segments, wherein each annular segment is coupled to another annular segment at a seam, wherein, the coupled annular segments define a maximum longitudinal extension, a maximum lateral extension, and an internal volume, the maximum longitudinal extension being less than about 4.3 meters;
• at least one platform assembly installed within the internal volume;
• and,
• a down-tower electrical assembly installed atop the platform assembly within the internal volume such that the pre-assembled tower base assembly can be transported in the upright position with the down-tower electrical assembly configured therein.

A method for transporting a pre-assembled tower base assembly of a wind turbine, the method comprising:

• providing a tower base assembly defining a maximum longitudinal extension, a maximum lateral extension, and an internal volume, the maximum longitudinal extension being less than about 4.3 meters;
• installing at least one platform assembly within the internal volume;
• installing a down-tower electrical assembly atop the platform assembly within the internal volume of the tower base assembly;
• and,
• after installing the down-tower electrical assembly, transporting the tower base assembly to a wind turbine site in an upright position with the down-tower electrical assembly configured therein.