Abstract: It comprises at least one substantially elongated pin associated with a wind turbine tower and at least one corresponding substantially elongated pile to be inserted into a surface and adapted for receiving at least one portion of the pin. A chamber is defined between the pin and the pile for receiving grout. At least one of the pin and the pile is provided with connecting plates extending inside the grouting chamber and provided with holes through which the grout passes. The connecting plates may extend radially inside the grouting chamber, aligned or not to each other or with the center of the pin or the pile.

Abstract: Wind turbine foundation comprising at least one substantially elongated pin associated with a wind turbine tower and at least one corresponding substantially elongated pile foundation to be inserted into a surface and adapted for receiving at least a portion of the length of the pin when in use, wherein the pin comprises an inserting end arranged opposite to a connecting end associated with the wind turbine tower and a stopping element is arranged inside the pile on a plane substantially transversal to a longitudinal axis of the pile, wherein the stopping element is adapted to receive said inserting end such that when the pin is inserted into the pile the inserting end is fitted in the stopping element. Furthermore, a wind turbine comprising such a foundation is described.