Use of solar radiation data from HelioClim database for shortterm PY system power output prediction for Polish localization

Installed power of photovoltaics systems in Poland grow systematically. Annual contribution of energy produced from PV systems in Polish power system is still on the low level. Due to irregular and stochastic characteristic of solar radiation distribution during the year in specific weather conditions power supplied by PV system might have impact on operation of electric grid. Such situations occur more often in European countries that developed solar energy sources in their power system. Due to power grid balancing and its stability, prediction of power generation in renewable energy sources become more important. On the other hand development of earth observation techniques give new tool for accurate solar radiation data acquisition and its prediction. Article presents model of energy production of PV system based on data from HelioClim database. HelioClim database stores solar radiation data obtained from Meteosat images received from Eumetsat. It also contains 24 hour solar radiation prediction model. PV system model is validated for historical data and used to predict energy output from a specific system. Received prediction of energy production is compared with real output power of a system.