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Nils H. Reich, Bjoern Mueller, Alfons Armbruster, Wilfried G. J. H. M. van Sark, Klaus Kiefer and Christian Reise Performance ratio revisited: is PR > 90% realistic? Progress in Photovoltaics: Research and Applications 20

Article first published online: 18 JAN 2012 | DOI: 10.1002/pip.1219

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The performance ratio (PR) of about 100 German photovoltaic system installations is reviewed. Loss mechanisms of the top 10 performing German systems monitored in 2010 are analyzed by means of simulation. Based on silicon sensor readings of on-site irradiation, PRSi values above 90% are found to be realistic even today, using today's commercially available components, and should be expected more frequently in the future.

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