Correlation analysis of tilted and horizontal photovoltaic panel's electricity generation and horizontal global radiation

摘要

Present paper aims at analyzing the correlation between global radiation and electricity production of photovoltaic (PV) panels. In case of high correlation, the electricity production can be estimated by the measured or predicted global radiation. Such solution can be applied for forecast purposes if global radiation data are available. On the other hand, global radiation can be measured based on the performance of a small and cheap PV system, which can be a reasonable solution if global radiation data is not available and a high precision monitoring system is too expensive.