Sloan Valve Co. offers solar-powered, sensor-operated Flushometers. Sloan Solis Flushometers for water closets and urinals provide groundbreaking water efficiency and use state-of-the-art photovoltaic technology. It uses light to charge a highly efficient capacitor, providing power even in rooms with occupancy-controlled lighting. It powers the unit without the need for moving parts in the waterway, which mean superior hydraulic performance and reduced maintenance.