Plenty of businesses are going solar to help save the planet. Keeping lots of solar panels clean is not an easy task. The Ecoppia E4 is an autonomous water-free robotic solar panel cleaner that removes 99% of dust on a daily basis. It is developed to keep solar panels performing at their peek without wasting any water.
These robots are powered by a solar panel, so they do not require an external power supply. They move along an aluminum frame with polyurethane coated wheels not to damage the panels. Each robot uses 5 motors to move in all directions. The Ecoppia E4 has a cleaning rate of 54 square feet per 30 seconds.