The extensive adoption of clean energy sources represents a vital strategy for addressing the dual challenges of resource scarcity and ecological degradation resulting from humanity's prolonged dependence on non-renewable resources. Photovoltaic pavements (PVP) are a technology that can change the way roads are built and the way electricity is generated. This study established a method to assess the potential for the application of PVP at an urban scale. A mathematical model was established to predict the power output of PVP. The model's accuracy was validated through comparison of empirical and simulated data, demonstrating high statistical correlation. Subsequently, this model was employed to evaluate the potential photovoltaic power output from Shenzhen's park roads and pavement systems. The results indicate the PVP system achieves an installed capacity of 11,021.52 MW, generating an annual electrical output of 36,826.74 GWh. Furthermore, comprehensive assessment of both economic viability and environmental implications demonstrates that PVP implementation significantly contributes to carbon emissions reduction, thereby serving as a crucial mechanism in facilitating energy transition and advancing towards carbon neutrality objectives.