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Solar panels can lose 50% of their reflectivity in only a few days because of the dust that collects on them. However, researchers at Oak Ridge National Laboratory have developed a new coating that can be painted or sprayed on the panels, eliminating the need for manual cleaning. The coating is based on ORNL's "superhydrophobic coating technology developed by the laboratory and is capable of rejecting water, viscous liquids, dust particles and sand trying to settle on the surface," according to this post.

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