The NanoGuard® coating technology has applications for non-PV glass such as curtain glass walling systems. Research suggests that the operation & maintenance cost of cleaning the glass can exceed the cost of the system in as little as seven years. With the proliferation of these systems, the application of an easy-clean technology such as NanoGuard® has wide-reaching benefits, including reduction in O&M costs, water wastage, and environmental benefits through the non-use of chemical cleaning agents.