They are projects concerning the exploitation and the utilization of the wind power of our country. The exploitation of wind energy by humans is a practice which finds its roots in antiquity. Some examples of exploitation of wind energy are sailing and windmills. Nowadays, in order to utilize the wind energy resources we use wind turbines.
Wind turbines are machines that convert the kinetic energy of wind into electricity. This conversion takes place in two stages. In the first stage, through the impeller, we convert the kinetic energy of wind into mechanical energy in the form of rotation of the impeller shaft and during the second stage, through the generator, we achieve the conversion of the mechanical energy into electricity.
Wind Parks are independent production units which utilize the available and renewable natural source “wind” of each suggested area that fulfils the requirements of Greek legislation for the establishment of a Wind Park. The decision of our group of companies regarding the suitability of each area, apart from the siting provisions which arise from the Specific Regional Planning Framework for RES, is based on the prevailing anemological conditions according to the long-term measurements of the masts which our group installs so as to collect the necessary anemological data. Additionally, as far as the selection of the area is concerned, are taken into consideration factors such as the environmental impact, the accessibility of the site, the possibility of the connection with the national transmission grid and the aspects of the local society with respect to the development of the projects in the area.
The development of a wind park is a complex and long-term project which is consisted of different phases and auxiliary projects whose construction is based absolutely on the accurate and the in-depth studies conducted by specialized civil engineers, topographers, mechanical engineers, electrical engineers, geologists and energy studies experts. In particular, for its construction, at first, there should be performed infrastructure works such as the road construction tasks and the improvements to the existing road network, if needed so as to assure the safe and unhindered access to the site locations. Then, the layout of the construction areas is following so as to make feasible the accessibility of the crane vehicles and trucks to be used during the tasks regarding the erection of the wind turbines. After that, the layout of the foundations is taking place.
For this implementation it is required to proceed with the necessary excavations, with the placement of the reinforcing bars and of the earthing systems, and finally with the concreting. Additionally, the auxiliary tasks comprise the backfillings, the excavation of trenches for the cabling, the construction of substations where it is required , the works for the connection with the electricity distribution network or the electricity transmission system and the construction of the control building where the tele-surveillance and tele-control systems are established as well. The erection of the wind turbines and the installation of their internal parts as well consist the final stage of the construction before the project is to be connected with the grid.
Wind energy is a practically inexhaustible source of energy. Given the high wind potential of our country to be exploited in conjunction with the rapid development of technologies incorporated in modern wind turbines, wind energy contributes significantly to sustainable development, conservation of energy resources, environmental protection and tackling climate change.