E4 Robotic Solar Panel Cleaner
Ecoppia

Dust and dirt, which are especially problematic in dry, desert-like environments where there’s little rain, can reduce a solar panel’s performance by up to 40 percent. Cleaning of solar panels has traditionally required significant labor and large amounts of water, which is a burden on the environment, not to mention costly and logistically complicated in many regions. Enter the E4 robotic solar panel cleaner from Ecoppia. The E4 is a waterless cleaning system that is itself solar-powered, so there’s no reliance on external energy sources.