Integrating Photovoltaics with Water Retention and Ecological Restoration in Arid Regions

Integrating Photovoltaics with Water Retention and Ecological Restoration in Arid Regions

This solution demonstrates how large-scale solar energy development can be aligned with nature-based solutions (NbS) to address land degradation, water scarcity, and climate resilience. Implemented in Yulin, Shaanxi Province, and Yinchuan, Ningxia Province, the projects integrate photovoltaic infrastructure with ecological restoration and water retention strategies, transforming degraded sandy land into multifunctional landscapes.

Beneath the solar panels, water-retaining agents are incorporated into the soil to form distributed “micro-reservoirs” that capture limited rainfall, reduce evaporation, and support vegetation growth. The resulting vegetation has shown strong establishment compared to typical solar farm conditions. This improved vegetation cover enhances soil stability, reduces desertification risks, and strengthens ecosystem resilience, while maintaining efficient energy production with reduced cleaning frequency and lower water demand.