Factors influencing the heater power consumption on 22inch hotzone in TDR-95A-ZJS Czochrolaski crystal growth furnace for photovoltaic application are analyzed by means of numerical modeling and simulations. Based on numerical simulation results, hotzone optimization through structure and graphite insulator layout modifications targeted for heater power reduction is proposed. Physical crystal growthexperiments show that the heater power consumption is reduced by 29% after hotzone optimization while the crystal quality remains very similar to the ones obtained by original hotzone.