How do you clean a solar module?

The voltage and current present in an array during daylight hours are sufficient to cause a lethal electrical shock. Acceptable module cleaning methods include spraying the modules with low-pressure water that is closely matched in temperature to the temperature of the module or to use a dry brushing technique.

Do solar modules need to be cleaned?

First Solar modules are frameless and do not require cleaning as installed. Installed modules may collect a light layer of dust and/or dirt over time. For many installations, rainfall should be sufficient to remove any lighter soiling. In locations with heavy soiling, properly timed module cleaning can improve energy yields.

How do I clear snow from a solar array?

Other snow clearing methods, such as blowers, may be used depending on snow conditions and approval by First Solar. To prevent pile up and overload, periodically clearing snow from the bottom modules first in an array is a critical process.