Researchers from the University of Texas at Arlington have developed a photoelectrochemical energy cell to store solar energy such that it can deliver power 24 hours a day. According to the researchers, the new cell can be scaled to provide large amounts of energy. It is limited only by the size of its chemical storage tanks. The system is based on a vanadium photoelectrochemical flow cell that allows for storage of electrons in the cell. In comparison, most current solar energy systems are restricted to using sunlight immediately as a power source. The researchers are now working on a larger prototype system.