Wind turbine

1. A wind turbine, comprising a stationary vertical mast on which a moving part of the wind turbine is arranged, said mast including an annular mast section composed of prefabricated adjacent wall parts, said adjacent wall parts being placed side by side and having a height and width, wherein said height is at least approximately twice said width and horizontal edges of said annular mast section are placed on top of horizontal edges of another mast section.

2. A wind turbine according to claim 1 , wherein said mast section is composed of three or more wall parts.

3. A wind turbine according to claim 1 , wherein the mast section tapers conically upwards.

4. A wind turbine according to claim 1 , wherein the adjacent wall parts lie against each other along substantially vertical edges.

5. A wind turbine according to claim 4 , wherein two cylindrical mast sections lie against each other, with the vertical edges by which the wall parts lie against each other staggering in one mast section relative to those of the other mast section.

6. A wind turbine according to claim 5 , wherein the vertical edges by which two adjacent wall parts lie against each other touch said wall part approximately in the middle of the subjacent wall part.

7. A wind turbine according to claim 4 , wherein the substantially vertical edges of the wall parts are stepped.

8. A wind turbine according to claim 1 , wherein at least one of said wall parts is higher than the greatest dimension of that wall part in the width direction.

9. A wind turbine according to claim 1 , wherein the height of the mast section is greater than the diameter of said mast section part.

10. A wind turbine according to claim 1 , wherein the cross-section of the mast section has a substantially cylindrical shape and is circular.

11. A wind turbine according to claim 1 , wherein the cross-section of the substantially cylindrical shape is one of a regular and irregular polygon.

12. A wind turbine according to claim 11 , wherein two adjacent wall parts do not lie against each other in an angle of the polygon.

13. A wind turbine according to claim 11 , wherein two substantially vertical edges of a wall part lie at mutually different distances from an angle of the polygon.

14. A wind turbine according to claim 11 , wherein a substantially vertical edge of a wall part runs parallel to an angle line of said wall part.

15. A wind turbine according to claim 1 , wherein the wall parts consist substantially of concrete.

16. A wind turbine according to claim 1 , wherein the wall parts are connected at edges using bolt connections.

17. A wind turbine according to claim 1 , wherein tension cables are supported via bridge parts on an upper edge of a mast section.

18. A wind turbine according to claim 1 , wherein tension cables extend upwards through the interior of the mast at a distance from the wall parts.

19. A wind turbine according to claim 1 , wherein said mast includes a plurality of mast sections, and at least a number of tension cables extend along only some of said mast sections.

20. A wind turbine according to claim 1 , in which horizontal edges of said mast sections are in a nonoverlapping relation.

21. A wind turbine, comprising a stationary vertical mast on which a moving part of the wind turbine is arranged, said mast including a plurality of stacked annual mast sections, at least one of said mast sections being composed of at least three prefabricated adjacent wall parts being placed side by side forming the mast section, wherein the wall parts consist substantially of concrete.

22. A wind turbine according to claim 21 , wherein the wall parts are connected at edges using bolt connections.

23. A wind turbine, comprising a stationary vertical mast on which a moving part of the wind turbine is arranged, said mast including an annular mast section composed of prefabricated wall parts, with several adjacent wall parts being placed side by side forming the mast section, wherein said mast including a plurality of mast sections, and at least a number of tension cables extend along only some of said mast sections.