The study focused on the developing modified photogalvanic cell to increase the conversion and storage of solar energy with enhanced electrical output at least cost. Photogalvanic cell is a photo-electrochemical cell that can be chargeable in solar light by its photogalvanic effect to convert and store solar energy in electrical energy. It is an H-shaped glass tube cell containing two electrodes which were dipped in a multifaceted electrolyte solution of dye-reductant-surfactant-alkali. In this study, an integrated system of Nile blue A (as dye), L-ascorbic acid (as reductant) and Brij-35 (as surfactant) has been developed and used for formulating modified photogalvanic cell for increasing the solar energy conversion and storage capacity. This system by way of variable concentration of chemical components were used to formulate a modified photogalvanic cell. The modified photogalvanic cell indicated significantly improved performance in terms of dark potential (691 mV), open-circuit potential (1087 mV), short-circuit current (2800 μA), power (705.60 μW), charging time (24 min), half change time (45 min), conversion efficiency (19.67%), and fill factor (0.232). The outcome of various cell formulation parameters was studied for optimization of the cost of formulation variables for the optimal cell performance based on the proposed mechanism.