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Fraunhofer IDMT Shows Novel Approach to Acoustic Cleaning of Large Photovoltaic Surfaces
The soiling of photovoltaic modules leads to a loss of up to 20% in yield. But how can large-scale and hard-to-reach photovoltaic systems be effectively cleaned of dust and sand without wasting too much water or damaging sensitive module surfaces? The “AkSoRe” research project aims to provide a leading-edge answer to this question. The project partners Silberform AG and Fraunhofer IDMT exhibited an initial demonstrator. At the heart of the project is a novel process for cleaning PV modules using targeted mechanical vibrations. The technology uses structure-borne sound to remove soiling such as dust or sand from the module surfaces without contact – completely without water or mechanical abrasion and with virtually no maintenance. The market for cleaning PV modules is growing rapidly. By 2033, the global market size is expected to reach around US$1.85 billion ($2.5 billion). This illustrates the enormous demand for sustainable, low-maintenance solutions, especially in regions with high dust levels and water shortages. “With our acoustic cleaning technology, we want to address this issue and create real value for the solar industry. Our goal is to make energy generation from PV systems even more sustainable and efficient,” explained Andreas Männchen project manager at Fraunhofer IDMT. The AkSoRe research project is funded by the German Federal Ministry for Economic Affairs and Climate Action (BMWK) as part of the Central Innovation Program for SMEs (ZIM) until June 2027.
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