Synergistic Optimization of Building Energy Use and PV Power Generation: Quantifying the Role of Urban Block Typology and PV Shading Devices

In high-density cities, integrating photovoltaic shading devices (PVSDs) with urban block typology optimization is crucial for low-carbon development, yet the understanding of their synergistic effects remains limited. This study develops a novel multi-scale evaluation framework that bridges block-building hierarchies to address this research gap. Through parametric modeling, this study coupled 27 representative office block morphologies with 18 PVSDs in Wuhan, a prototype city for China’s hot-summer–cold-winter climate zone, systematically generating 486 scenarios for comprehensive evaluation. Using Rhino–Grasshopper (7.0) with Ladybug (1.7), Honeybee (1.6), and EnergyPlus (9.4), we then examined urban block typology-PVSDs interactions across these scenarios. Our findings demonstrate that coordinated block typology and PVSD variables serve as critical determinants of energy-performance synergy. High-Rise Hybrid blocks emerge as the superior configuration for integrated performance, achieving maximal passive energy savings, optimal renewable energy utilization, and substantial carbon reduction. PVSDs that are 0.4 m in width, with specific distance-to-width ratios, yield the highest integrated benefits. This work advances sustainable urban design by establishing a morphology–energy nexus framework, providing architects and urban planners with actionable strategies for climate-responsive design in similar regions, with direct implications for maximizing energy–PV synergy through morphology-aware design approaches.