Soiling and value of cleaning for low-tilt PV systems in temperate climates: a Swiss case study
Soiling and value of cleaning for low-tilt PV systems in temperate climates: a Swiss case study
- Author(s): P.-J. Alet ; P. Cuony ; J. Dutoit ; L. Scharrenberger ; B. Currat ; L.-E. Perret-Aebi ; C. Ballif
- DOI: 10.1049/cp.2014.0882
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- Author(s): P.-J. Alet ; P. Cuony ; J. Dutoit ; L. Scharrenberger ; B. Currat ; L.-E. Perret-Aebi ; C. Ballif Source: 3rd Renewable Power Generation Conference (RPG 2014), 2014 page ()
- Conference: 3rd Renewable Power Generation Conference (RPG 2014)
- DOI: 10.1049/cp.2014.0882
- ISBN: 978-1-84919-917-9
- Location: Naples, Italy
- Conference date: 24-25 Sept. 2014
- Format: PDF
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.
Inspec keywords: building integrated photovoltaics; power system management
Subjects: Photoelectric conversion; solar cells and arrays; Solar power stations and photovoltaic power systems; Power system management, operation and economics; Solar cells and arrays; Buildings (energy utilisation)
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