How much current does a solar cell provide?

PTB calibrates reference solar cells for real conditions by means of a novel measuring setup
Conventional measurement procedures for determining the performance of solar cells make it difficult to obtain yield forecasts under real operating conditions. By means of a novel measuring setup which uses a laser-based spectral measurement procedure, PTB researchers have successfully characterized solar cells comprehensively enough that their yield can be calculated for any given climatic condition. This measuring setup also allows reference solar cells to be calibrated under the established standard test conditions (STCs) with a measurement uncertainty of less than 0.4 % - the only setup in the world to achieve an uncertainty this low.
More: www.ptb.de/cms/... calibrates reference solar cells for real conditions by means of a novel measuring setupelles/journals-magazines/ptb-news/ptb-news-ausgaben/archivederptb-news.html