The need of green energy production is very intense the last years and it rises the attention of all people who are interested in this sector. A lot of studies were conducted so as to reduce cost, time and at the same time keep the relevant functions operational. This study focuses on the way to study deeper and enhance the foundation of onshore wind tower foundation while being aligned with the regulation standards. The procedure that leads to this result includes the analysis of the forces that are applied on the system wind turbine – foundation, the identification of the soil conditions, the receival of the wind turbine characteristics and the alignment with the regulations. More specifically, the foundation is initially considered of cubic shape which acts as a counterweight to the overturn force that is predominant at the whole system. At a second phase, the shape of the foundation is considered rectangular and finally it is designed as a beam slab whose voids are filled in with soil which contributes to the counterweight needed to overcome the overturn forces. After implementing the proposed methodology and comparing it with a compatible wind turbine foundation, it is derived that there is high reduction is cost, materials and time while the precision is increased, and the regulations are followed Through this way the installation of the wind turbine foundation will be quicker and more precise leading to increased efficiency in time and cost.