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|Title:||Geographical Variation of the Conversion Efficiency of Crystalline Silicon Photovoltaic Modules in Europe|
|Authors:||HULD THOMAS; SURI MARCEL; DUNLOP EWAN|
|Citation:||PROGRESS IN PHOTOVOLTAICS vol. 16 no. 7 p. 595-607|
|Publisher:||JOHN WILEY & SONS LTD|
|Type:||Articles in periodicals and books|
|Abstract:||We present geographical assessment of the performance of crystalline silicon PV modules over Europe. We developed a method that is based on a material specific analytical expression of the PV conversion efficiency, relative to nominal efficiency, as a function of module temperature and irradiance. This method is combined with a climatic database that includes average daytime temperature and irradiance profiles. It is found that the geographical variation in ambient temperature and yearly irradiation causes a decrease in overall yearly PV performance from 3% to 13% relative to the performance under Standard Test Conditions, with the highest decrease found in Mediterranean regions. Based on the above results we developed a simplified linear expression of the relative PV module efficiency that is a simple function of yearly total irradiation and yearly average daytime temperature. The coefficients to the linear expression are found by fitting to the map results from the above mentioned analytical approach. This linear fit predicts total yearly PV output that deviates less than 0.5% from the more detailed calculation, thus providing a faster and more simplified alternative to the yield estimate.|
|JRC Institute:||Sustainable Resources|
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