It's easy to live with a few smudges on your smartphone's display, but for devices like solar panels that are completely dependent on every last drop of light making it through, cleanliness is a top priority. And when you've thousands of solar panels in a field drinking in sunlight, cleaning them all manually isn't an option. That's when you need to call in the robots, particularly Sinfonia's new cleaner that excels at squeegeeing at awkward angles.
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