As a typical solution for the integration of photovoltaics and characteristic industries, the Fishery Photovoltaic Complementary Project sets up photovoltaic brackets on aquaculture surfaces such as fish ponds and shrimp ponds, creating a three-dimensional development model of "photovoltaic power generation on the board and aquaculture under the board", realizing the dual use of one water and fishery photovoltaics. While revitalizing water resources and driving the improvement of aquatic quality and efficiency, it continues to output clean green electricity and embark on a green development path of ecological friendliness and industrial income increase.
The scheme design fully considers the laws of photovoltaic power generation and the needs of aquaculture. In the early stage, the layout of pile foundation supports is customized based on the water depth, sediment, and aquaculture species at the pond mouth. The spacing between components and the height above the ground are reasonably controlled to ensure that the water surface ventilation and water lighting meet the growth needs of aquatic organisms such as fish, shrimp, and crabs. Photovoltaic modules form a natural sunshade barrier, which can buffer strong sunlight exposure in summer, stabilize water temperature, inhibit harmful algal blooms such as blue-green algae, reduce aquatic diseases, and improve the survival rate and quality of aquatic products; The cooling effect of water vapor on the water surface can also lower the operating temperature of photovoltaic modules, improve power generation efficiency, and form a virtuous cycle of mutual gain between aquaculture and power generation.
In terms of electricity consumption mode, the project adopts a grid connection scheme of self use and surplus electricity grid connection. The green electricity generated by photovoltaics can be prioritized for use in pond aerators, water circulation systems, water quality monitoring equipment, and feeding equipment, significantly reducing the cost of electricity for aquaculture bases and ensuring stable power supply for breeding equipment; The surplus electricity is fed into the power grid, bringing long-term stable power generation income to farmers and cooperatives. Scenarios with demand can also be equipped with energy storage systems to provide emergency power supply for key aquaculture equipment during power outages, avoiding production risks such as oxygen deficiency and pond overturning.
Safety and operation control are the key points for the implementation of the fishery photovoltaic complementary project. The water-based photovoltaic system adopts anti-corrosion and waterproof pile foundation supports, which are suitable for humid water environments and are equipped with complete lightning protection, leakage protection, and islanding protection systems; The intelligent operation and maintenance platform remotely monitors the string power generation data, combined with drone inspections, to promptly identify hidden dangers such as component cracking, bracket corrosion, and cable aging. At the same time, reserve breeding operation channels that do not affect daily aquatic operations such as seedling feeding, fishing, and pond cleaning, while also taking into account power station operation and fishery production.
The combination of ecological and industrial values is a prominent advantage of the fishery photovoltaic complementary solution. The project will not occupy additional farmland, effectively revitalize idle low-lying ponds and mudflat, and improve the economic output of unit waters; The green electricity generated by the project synchronously reduces carbon emissions, helps the aquaculture base build a green breeding brand, and meets the requirements of green agricultural products and low-carbon certification in the supply chain. The continuous development of the Yuguang project can also be combined with water town resources to expand leisure tourism, extend the "Yuguang Tourism" industry chain, and help revitalize rural industries.
Industry experts remind that fishery photovoltaic complementary projects need to strictly comply with relevant regulations on water use and ecological protection, and be designed and constructed by a professional team in combination with aquaculture planning and hydrological conditions, balancing power generation layout and aquaculture ecology. With the continuous promotion of photovoltaic integration applications, fishery photovoltaic complementarity is becoming the preferred solution for efficient utilization of water resources, allowing one pond to harvest green electricity and high-quality aquatic products at the same time.
