Why weight matters in solar PV installation? According to Giga Solar this is because heavy solar module increases overall cost, limits application and slows adoption.
Giga Solar has come out with an innovative new design of non-glass and frameless PV module which allows for significant weight savings while still maintaining strength and durability. Comparing Giga Solar's 265W module to conventional glass-covered module, Giga Solar's product only weights 1/3 of conventional one.
This helps to reduce the installation cost of residential solar system by 1/3. Also, being very low profile and light, a 40ft container can fit 3 times more Giga Solar's modules, compared to conventional modules, thereby reducing shipping cost by half. Below picture shows a person simply using one hand to hold the module.