"raise" photovoltaic in fish ponds

Under the premise of not increasing the input of resources such as land, how to further improve the efficiency of aquaculture industry? In recent years, the "fishing and light integration" demonstration bases in Rudong and Sheyang in Jiangsu have creatively combined photovoltaic new energy power generation with aquaculture, achieving a bumper harvest of "fish, electricity and environmental protection".

"the integration of fish and light", to put it simply, is to realize the parallel development of aquaculture and power generation by setting up photovoltaic panels on the water surface and cultivating fish and shrimp underwater. According to expert estimates, at present, China has 120 million mu of aquaculture surface, of which about 45 million mu of intensive fish ponds have the conditions for the development of "integrated fishing and light." if all the transformation is realized, the total amount can reach 1200GW to 1500GW, and the annual power generation income will reach 1.2 trillion to 1.5 trillion yuan.

Tongwei shares is currently the world's largest aquaculture enterprise, directly or indirectly owns 9 million mu of high-quality fish ponds. Liu Hanyuan, Executive Vice President of the New Energy Chamber of Commerce of the all-China Federation of Industry and Commerce and Chairman of Tongwei Group, said, "We have estimated that the annual output of aquaculture in 9 million mu intensive fish ponds can reach 13.5 million tons. Through the new construction, renovation and expansion of the 'fishing in one' project, the installed capacity of photovoltaic power stations from 300GW to 450GW can be increased. In areas with annual sunshine of more than 2000 hours, the profit per mu of pond will be more than three times higher than that of simple aquaculture. "

In terms of cost, compared with conventional farming or general power stations, the initial capital investment of "Yuguang Integration" is slightly higher, but the later operation and maintenance cost is not high, which can further reduce the cost with the realization of unmanned watch.

What is particularly impressive is the environmental benefits. According to reports, taking the solar power station built on the surface of 20 to 30 mu of fish ponds as a unit, it can save 348 tons of standard coal and reduce carbon dioxide emissions by 1200 tons per year.

"the integration of fish and light" has not been developed for a long time in our country, but this unique innovation model has been concerned by the competent department and many experts and scholars in agriculture and photovoltaic industry.

According to Liang Zhipeng, deputy director of the New Energy Department of the State Energy Administration, it is estimated that during the 13th five-year Plan period, the annual investment in photovoltaic projects will reach 150 billion yuan, and the export of photovoltaic products will also reach 150 billion yuan. It is expected that in about 10 years, photovoltaic power generation will have the ability to compete fully with coal power.

"under the background that the country continues to promote the development of green energy, the integration of fish and light has broad prospects for development." Wei Baozhen, director of the National Aquatic Technology Popularization Station, said that making use of the rich pond surface resources in concentrated aquaculture areas to build photovoltaic power generation projects, and making full use of the integrated advantages of new energy industry, efficient fishery and leisure tourism industry, a good combination of intensive development of new energy and industrialization of efficient aquatic products can be realized.

Professor Sun Yaojie, executive vice president of the New Rural Development Research Institute of Fudan University and executive chairman of the National Modern Agricultural Photovoltaic Industry Collaborative Innovation Strategic Alliance, believes that "integration of fish and light" will directly reduce aquaculture costs and improve aquaculture efficiency. "aiming at the mechanical power consumption of breeding equipment such as aerator and feed feeding machine, using photovoltaic power generation on water will effectively reduce this part of the breeding cost. As a combination of new industry and modern facility agriculture, 'fishing and light integration' has realized industrial superposition and resource sharing, and can give full play to the comprehensive utilization benefits of land. " Sun Yaojie said.

In Jiangsu and other places, thousands of mu of intensive fish ponds have adopted the model of "integration of fish and light", and good benefits have been achieved. Taking the "fishing and light integration" demonstration project in Sheyang as an example, the power generation income per mu of fish ponds in the first year of the project reached more than 60,000 yuan, which was significantly higher than the previous fish culture income of 7000 to 15000 yuan per mu, and the annual profit of the "fishing and light integration" pond per mu was more than 40,000 yuan.