A primary source of renewable energy is solar energy. This is the one of the most resourceful sources of energy for the future. The aim of this study is to harness and store solar energy through Naphthol blue black dye–EDTA-Tween 80 photogalvanic cells. The photogalvanic cells based on photo-sensitizer Naphthol blue black dye-Tween 80-reductant EDTA–NaOH alkaline medium has shown encouraging and very impressive improvement in solar energy conversion and storage. This combination of chemicals has shown harnessing of 108.11 μW maximum powers with a storage capacity of 110 min as half change time from the 10.4 mWcm−2 artificial and low illumination intensity. In this study, the observed optimum cell performance in terms of the maximum photopotential, maximum photocurrent, and short-circuit current is 844 mV, 768 μA, and 730 μA, respectively.