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Soiling and value of cleaning for low-tilt PV systems in temperate climates: a Swiss case study

Authors :
B. Currat
Peter Cuony
L. Scharrenberger
Christophe Ballif
Pierre-Jean Alet
J. Dutoit
Laure-Emmanuelle Perret-Aebi
Source :
3rd Renewable Power Generation Conference (RPG 2014).
Publication Year :
2014
Publisher :
Institution of Engineering and Technology, 2014.

Abstract

Low-tilt PV systems are increasingly common on flat roofs, where they enable a high power density. Yet there little is known about their requirements in terms of operations and maintenance, especially soiling. Here we present a case study on a 410 kWp system in Switzerland with a 5° tilt. Nineteen months of inverter data have been carefully analysed and correlated with consolidated weather data from four weather stations. Unlike systems on sloped roofs, which are deemed self-cleaning in Europe, this system demonstrates a clear and lasting benefit from active cleaning, with a 6% gain in energy yield.

Details

Database :
OpenAIRE
Journal :
3rd Renewable Power Generation Conference (RPG 2014)
Accession number :
edsair.doi...........4e335c39e3484512af40666b8d2939a7
Full Text :
https://doi.org/10.1049/cp.2014.0882