This paper develops a comprehensive green energy investment model that examines the intricate relationship between societal acceptance, financial returns, and investment decisions in the context of green energy projects. The model is specifically applied to the aftermath of the Fukushima nuclear disaster, a pivotal event that reshaped public perceptions and policy directions regarding energy sources. By integrating societal acceptance as a key variable, the model accounts for the influence of public opinion on investment flows and expected returns in the green energy sector. The study utilizes empirical data to validate the model, demonstrating how societal acceptance significantly impacts both the risk and profitability of green energy investments. The findings underscore the importance of aligning investment strategies with societal values, particularly in the wake of events that shift public attitudes towards energy sources. This research contributes to the broader understanding of sustainable energy investments, offering insights for policymakers and investors on how to navigate the complexities of public sentiment in the transition to green energy.