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Among the basic problems that are involved in the decision to implement an energy project with Renewable Energy Sources(RES) are the identification of resources and the assessment of their regional potential, the possibilities of connecting to the existing electricity network in the area, the efficiency of conversion of natural RES in electricity, sources of financing and the possibilities of expanding the regional energy system based on RES. Then there are problems of endowing with modern RES-based power plants, the quality of the electricity supplied in the grid, the reliability of the connection schemes and the continuity of the power supply while reducing the energy losses on the grids. All these problems can pose risks to prevent the construction of a RES power plant or the good functioning of RES connected to the regional power system. In the paper, these aspects are analyzed by the authors in accordance with the renewable energy resources and the existing RES on the territory of the Bihor County. [ABSTRACT FROM AUTHOR]

This paper is dedicated to the analysis of the possibilities of assessing the level of electromagnetic pollution in the public spaces and the lucrative areas on the application of some statistical and probabilistic methods and by fuzzy modeling. The proposed models are applied to several components of the electrical grids located in Oradea or Bihor County. The first part of the paper ishows the statistic-probabilistic methods. There are presented models for calculating the level of electromagnetic pollution based on the probability of exceeding the dangerous threshold values of the characteristic magnitudes of the electromagnetic field. The second part is allocated to assessing the level of electromagnetic pollution by using fuzzy logic. There are elaborated models for fitting the values of electromagnetic field values into the risk levels given by the exposure of the organism in the electromagnetic field. By using the fuzzy toolbox from the Matlab software, the rules of inference for the specific conditions of electromagnetic field exposure and exposure, applied in power plants in Bihor County, are applied. [ABSTRACT FROM AUTHOR]