With the continuous growth of photovoltaic demand, different forms of photovoltaic application modes have begun to be widely applied. In some areas with limited land resources, the construction of photovoltaic power stations is gradually moving towards mountainous and desert areas, and even combining with water surfaces to form a water based photovoltaic power station model. The combination of fishery aquaculture and photovoltaic power generation combines the dual functions of fishery aquaculture and photovoltaic power generation, providing rich economic benefits for homeowners and generating good social benefits, promoting the development of local green energy.
Aquatic photovoltaic refers to photovoltaic power stations built in water environments such as ponds, small lakes, and large reservoirs to solve the problem of traditional photovoltaic power generation occupying a large area. The "complementary fishing and photovoltaic" refers to the combination of fishing and aquaculture with photovoltaic power generation. A photovoltaic panel array is installed above the water surface of the fish pond, and fish and shrimp farming can be carried out in the water below the photovoltaic panel. The photovoltaic array can also provide a good shielding effect for fish farming, forming a new power generation mode of "upper power generation, lower fish farming".
Image source: Baidu Pictures
Unlike ground power plants, aquatic photovoltaic power plants do not occupy land resources and are very suitable for the Middle East region, which is rich in water resources and lacking in land resources. Not only that, aquatic photovoltaic power plants also enjoy technological advantages. Due to the cooling effect of water on photovoltaic modules, it can suppress the surface temperature rise of modules and reduce radiation from the water surface. The overall power generation is about 10% -15% higher than that of rooftop or ground photovoltaic power generation systems under the same conditions, reducing power generation costs and improving power generation efficiency. The supporting structure of the aquatic photovoltaic system is made of high-strength magnesium aluminum zinc plated material. The entire system surface is hot-dip galvanized, which has strong corrosion resistance and stability, extending the service life of the photovoltaic power generation system and reducing maintenance costs. In addition, "complementary fishing and lighting" and other "photovoltaic+" business models have achieved increased fishing revenue, improved power quality, and reduced the occurrence of power outages on the basis of power generation.
However, there are also challenges in the development of complementary photovoltaic power generation between fish and light. Firstly, there are technical challenges, including improving the efficiency of photoelectric conversion, reducing the reliability and cost of complementary photovoltaic systems between fish and light; The second is the policy challenge, including immature policies for the application of complementary photovoltaic power generation between fishing and solar, and market-oriented pricing. The third challenge is in society, including the promotion of fishermen's services and the social recognition of complementary photovoltaic power generation between fishing and solar energy.
In addition to China, there are currently many successful complementary fishing and lighting projects in countries such as Europe, the United States, and Australia. These projects usually adopt a combination of installing solar photovoltaic panels on the water surface and fishing facilities such as fish ponds and marine farms. For example, the "Fisherman's Energy" project in the Netherlands is a complementary system for fishing and lighting. The project established a hybrid energy station in the North Sea consisting of 6 wind turbines and 2.5MW solar panels. This energy station not only provides clean energy, but also provides a better living environment for local fisheries. In addition, there are similar projects in the UK. For example, the "Pembrokeshire Demonstration Zone" project located on the southwest coast of Wales combines solar panels with marine aquaculture facilities to create a sustainable fishing ecosystem.
It can be seen that the "complementary fishing and lighting" model has become a new trend and a sustainable development model. It combines fishing with photovoltaic power generation to jointly promote sustainable development, which has significant benefits in reducing pollution and protecting ecology, achieving a win-win situation in social, economic, and environmental benefits. Combining photovoltaic and fishery industries, which occupy a large amount of space and water resources, not only achieves three-dimensional reuse in space, saves land, but also outputs environmentally friendly clean energy. We have achieved a win-win situation where fishing, aquaculture, and photovoltaic power generation are mutually integrated and complementary, resulting in social, economic, and environmental benefits.
