In many remote places like farms, households which are far away to the grid there is great need for electricity. Photovoltaic system offers possibilities to satisfying this need and they provide a free and clean energy source from the sun and the other hand resolve a social problem in this remote area. The investment cost to connecting this region where the households are dispersed to the log distance from each other, in especially in the mountain region is very high for example 10.000-12.500 Euro/km. Starting point in this study was the distance from the grid connection is 4-5 km. It would mean over 50.000 Euro investment in case of grid development. In this context for the electrification of the area one way is the stand alone PV system what can be extended with another energy sources and the second is the electrification by micro grid that is indicated for villages with 100-300 households. The present paper designs and simulated a stand-alone PV system developed for this remote area. The figure 4 shows the principal design of a photovoltaic system with alternating current output.

The PV system presented in figure 4 consists of 12 photovoltaic module (1) with a peak power 40Wp each and the type is Kyocera KC 40. The charge regulator (2) is C 40 Trace and the used inverter (3) is Piccolo 21. The produced energy is stored in a battery bank (4) and the type Rex Homas. The monitoring and the data logging are realised by the ENERPAC-data logging unit. At our latitude an energy supply based exclusively on photovoltaic requires large photovolatic generators due to the fluctuation is solar radiation. The same is true of photovolatic system that has to have great availability. Hence, a mixture of generator types is generally combined to from hybrid system. Combining PV generator and motor other wind generators ensures the same power security as in a public grid. In this way was design the system the component structure especially the battery bank and the monitoring equipment permit this enlargement of the system using another classical and RES sources, like wind hydro and fuel cells. In the future if the user want completely independent of fuel supplies an electrolyser and a hydrogen storage system can be integrated.