ETFE solar panels are photovoltaic panels that have a protective top layer of ETFE film. ETFE films are transparent enough to allow 95% of light to reach solar cells. ETFE solar panels have many advantages, such as self-cleaning, waterproof, UV resistant, lightweight, long service life (more than 5 years), can withstand high temperatures etc. ETFE solar panels are used in a wide variety of applications, such as IoT devices, wireless sensors, GPS asset tracking, ocean buoys, solar lights, solar chargers etc.