Modular tower for a wind power plant

A tower for a wind power plant, the tower comprising:

• a lower part having,
• at least a first corner bar, a second corner bar, and a third corner bar, each corner bar comprising at least a plurality of spirally welded steel tubes that are coupled one-to-another in an end-to-end series in a substantially longitudinal direction thereof,
• at least one perforated flange coupled to at least one end of each of the plurality of spirally welded steel tubes and configured to permit a plurality of fasteners to be mounted thereto;
• at least one of a cross strut or tension strut coupled to the first and second corner bars, each cross strut or tension strut having a first end coupled to one of the at least one perforated flange of said first corner bar, and a second end coupled to one of the at least one perforated flange of said second corner bar, such that said lower part forms a truss tower;
• and
• an upper part coupled to said lower part and configured as a substantially round tubular tower extending longitudinally upward from and centered above said lower part.