45 Nonconventional Technologies Review ©2015 Romanian Association of Nonconventional Technologies Romania, December, 2015 CASE STUDY REGARDING THE REALIZATION OF A SOLAR PARK IN MIERSIG, BIHOR, ROUMANIA Pantea Mircea 1 , Ioana Iulia Micle 2 , Silviu Blidar 3 1 Electrical Engineering Department, University of Oradea, Bihor, Romania, e-mail: mpantea@uoradea.ro 2 Technical Department Engeering Faist Mekatronic, e-mail: mcl_ioana@yahoo.com 3 Technical Department Engeering Faist Metal Working, e-mail: sbmaxi69@yahoo.com ABSTRACT: The study will result in a range of benefits at both financial and economic to the community concerned, using electricity from renewable sources, photovoltaic panels being directly connected to the grid via transformers so without energy storage, but also by alteration in angle inclination of the panels for hot and cold season. The main objective is to cover part of the electricity for community energy obtained through panels polycrystalline photovoltaic and as a secondary objective of this photovoltaic power plant is to reduce environmental impact by replacing electricity produced in power plants with electricity from renewable energy sources, and use this energy in daily activities. KEYWORDS: solar panels, renewable, power plants 1. INTRODUCTION Regarding Bihor County, where it is located the photovoltaic power systems average of the annual solar radiation is 2990,0 Wh/m 2 . If we reported to the maximum potential and to the minimum potential of solar radiation in Bihor County, in a year we have the following values: 5659,2 Wh/m 2 in June and 626,4 Wh/m 2 in January Is totally clean - all the components of are recyclable the plant: glass surface, modules, silicon and aluminum frames are all reusable and recyclable, It has a very long lifetime and not least significantly increases quality of life; It provides us independence - solar energy makes us independents of conventional sources of energy that are constantly decreasing and whose prices are constantly increasing; Growing trend is to obtain electricity with fuel still smaller and less polluting, so that all orientation is for the renewables, which is why we completed this study using solar energy. Next to this utility a new trend of using solar energy is the production of heat using thermal systems Vacuum tube, which would again lead to another profit can use the agent as both domestic hot water and space heating winter storage .[13] The total amount of radiation emitted by the sun, only part of it reaches the Earth, because some is absorbed into space and another part is reflected due to the presence at water and carbon dioxide from atmosphere and so that was reaching the surface of the Earth it is known as direct radiation, which as described before can be influenced by the atmosphere, and geographic positioning, seasonal variation and what the daily, which is why must take into account all of this as well as by angle of inclination of the panels of having the optimal efficiency.[10] Figure 1. Solar radiation and its evolution [1] 2. DESIGN AND DIMENSIONING THE PHOTOVOLTAIC SYSTEMS As it is well known the photovoltaic effect is directly influenced by the energy transfer from photons to electrical charges, absorption of light and the tasks of collecting and efficiency of such a system is directly influenced by the electrical energy generated by the solar cell of radiant energy captured by the latter which are directly influenced by the distance between panels and sun, but also their position night there by forming two angles: azimuth and elevation angle. [10]. After studies it was concluded that the optimum angle can be placed under the panels is between 15 and 55˚, with some minor deviations according to directions, and after it was set can be determined instantaneous position of the sun mentioning that the higher the angle is less will receive less and less diffused radiation, but in this