Wind turbine and wind power installation

A wind power installation module, comprising a substantially streamlined support body, said support body having a substantially drop-shaped horizontal cross section, said support body comprising

• a nose body having a substantially hemielliptical horizontal cross section and a tail body located downwind of said nose body, said tail body having a junction with said nose body, said tail body and said nose body being arranged substantially flush with one another at said junction, said tail body tapering in downwind direction in such a way that a contour of said tail body follows a parabolic course;
• said wind power installation module further comprising wind turbines arranged on said support body at said junction of said nose body and said tail body, each one of said wind turbines including:
• a rotor comprising a certain number of blades;
• a stator supporting said rotor in such a way that said rotor may rotate on a turbine axis of the turbine for generating electric energy;
• a shroud extending circumferentially around said stator and said rotor, said shroud supporting said stator so as to define an air channel having a certain air channel diameter at an inlet portion of said shroud;
• wherein said shroud has a maximum outer diameter such that said air channel diameter is comprised in the range from 0.82 to 0.9 times the maximum outer diameter, and in that said shroud has a length in direction of said turbine axis that is comprised in the range from 0.1 to 0.25 times the maximum outer diameter of said shroud.