Cleanliness - or a lack of it - has proven to be one of the biggest impediments to wider adoption of solar energy. Most solar energy farms are located in deserts (as is Kibbutz Ketura, which is in Israel's southern Arava desert) where the sun is strong, and the spaces are wide open. Both are important factors to take into consideration when building a solar energy farm, which consists of hundreds or thousands of solar panels.

Aside from using as little water as possible, solar panel cleaning faces another challenge, which is to keep the panel surface from scratching.
Ecoppia’s E4 solution is a robotic device that deploys a soft microfiber combined with airflow, traveling on a platform that applies no pressure on the panel surface.

With record amounts of solar energy systems being installed across Hawaii, the big boom is benefitting many supporting companies, including on the maintenance side of industry.

Research shows that accumulation of dirt on solar panels, called soiling, can have a big impact on the performance of PV systems in regions where rainfall is limited. Google installed a solar array at its Mountain View, Calif., offices and found it could increase production by 12% with cleaning. Greenbotics has shown that systems lose anywhere from 5 to 15% worth of production annually across the county from dust and, as any weathered solar technician will affirm, bird droppings.

SolarClean introduce the best service, from Romania for cleaning solar panels.
Using cleaning systems that are nontoxic and with great efficiency, the company goal is to revolutionize the maintenance of the solar parc's. This will permit to make the cleaning services with small and reduce costs.

Robotics are the future of efficient solar panel cleaning. At least SunPower thinks so. The company bought a small startup called Greenbotics which makes solar panel robotic tech.