On May 12, 2025, the innovative project "Zero-Carbon Aqua-Photovoltaic Complementary Energy System for Industrialized Aquaculture Facilities" of Chen Xiaomeng, an Associate Professor from the School of Architecture and Urban Planning, Chongqing University, won the Gold Medal at the 50th International Exhibition of Inventions, Geneva.
China has positioned agricultural intelligent information-based development and low-carbon green transformation in rural areas as key development goals. However, on one hand, highly intensive modern facility agriculture is energy-intensive, requiring substantial energy to maintain precise breeding environments in factories. And on the other hand, due to the power fluctuations in photovoltaic systems, they are difficult to be directly applied to agricultural facilities that require stable operation.
To address these issues, this project proposes a novel "Photovoltaic, Energy storage, Direct current, Flexibility" power system for industrialized aquaculture, jointly developed by Chongqing University and the National Digital Fisheries Innovation Center of China Agricultural University. The system directly applies photovoltaic DC power to greenhouse environmental control in facility aquaculture, leveraging the metabolic rhythm fluctuations of cultured fish and the thermo-electric energy storage synergy between soil and water in greenhouses. This achieves a flexible "source-storage-load" regulation strategy for the fishery photovoltaic power system. This technology offers new solutions and approaches for precise regulation of the agricultural environment and local consumption of photovoltaic power for agriculture, transforming traditional factory-based agricultural facilities from major energy consumers to green production facilities.
The International Exhibition of Inventions, Geneva is one of the world's oldest, largest, and most influential international invention expos. It is renowned for its rigorous evaluation criteria and professional standards, and is recognized as the "top of the world's three major invention exhibitions". The five-day exhibition brought together over 1,000 cutting-edge scientific and technological achievements from colleges, universities, research institutions, and enterprises across nearly 40 countries and regions, competing on the same stage and making it a grand event. The exhibition projects of Chongqing University stood out among the outstanding achievements, fully demonstrating CQU's outstanding strength in scientific and technological innovation and international competitiveness.
