A solar retrofit lighting system for light poles with a solar array panel assembly having semi-circular backing panels attached to adjustable internal mounting brackets or pole frames suitable to any size light pole and mounted in parallel with the longitudinal axis of the light pole with thin film photovoltaic laminate adhesively attached to the outer convex sides of the backing panels. A battery for storage of electrical energy from the thin film photovoltaic laminate will be provided along with a charge controller to regulate the charging of the battery, an inverter to convert DC to AC power and an LED light fixture extending from the pole. Alternatively, an on-grid option will be utilized at the pole, to convert and send energy back to the grid and draw power from the grid as needed when sunlight is unavailable.