Energy yield of coloured PV modules in the field

Friesen, Gabriele (2019) Energy yield of coloured PV modules in the field. In: 36th European Photovoltaic Solar Energy Conference, 9-12 September 2020, Marseille, France. (Unpublished)

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Abstract

Due to the dropping price of photovoltaic modules, building integrated photovoltaic (BIPV) products are getting more and more attractive for the building industry. An increasing number of new coloured modules are reaching the market, promising added value thanks to improved aesthetics, but at the cost of a lower energy yield. Many of these modules’ concepts integrate advanced c-Si technologies with higher efficiencies or bifacial cells in order to partially compensate these losses. One of the question raised on coloured modules is on how much the energy loss is under real operating conditions and how it can be estimated: the lack of validated performance models, indeed, doesn’t allow to calculate the potential energy savings achieved by the use of BIPV modules. To investigate these losses SUPSI PVLab installed a outdoor test facility with a set of typical modules with enhanced aesthetics. Modules with different coloured front appearances, structured glass and the use of bifacial cells are here compared to reference modules with the same cell technology, but standard transparent glass. The presentation presented the results of the measurement campaign started at SUPSI in April 2018. Particular attention have been put on the correlation of the indoor measurements to outdoor measurements and on the impact that the different colouring techniques has on the module temperature.

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