Photovoltaic agriculture: modern agriculture and clean energy achieve a win-win situation

[China Agricultural Machinery Industry News] Photovoltaic power generation has significant energy, environmental protection and economic benefits, and is one of the green energy sources. There are a large number of available roofs in the countryside, including own houses, vegetable greenhouses, fish ponds, etc. Photovoltaic agricultural greenhouse is a greenhouse with solar photovoltaic power generation, intelligent temperature control system and modern high-tech planting. The greenhouse uses a steel skeleton to cover solar photovoltaic modules, while ensuring the solar lighting power generation and the greenhouse lighting requirements of greenhouses.

Photovoltaic agriculture: modern agriculture and clean energy achieve a win-win situation

The amount of solar photovoltaic power generation can support the greenhouse irrigation system, fill the plants, solve the greenhouse heating needs in greenhouses, increase greenhouse temperature, and promote the rapid growth of crops.

Not only that, PV agricultural greenhouses can also be combined with tourism, tourism, industry, etc., to develop Chinese herbal medicine cultivation, seedling cultivation, mushroom production, urban happy farms, leisure fishing centers, etc., to form a characteristic, large-scale sightseeing agriculture. Therefore, the profitability of photovoltaic agriculture in the later period is very significant.

Many farmers' friends also want to make full use of the advantages of the countryside and vigorously develop the photovoltaic power generation industry, but they have little understanding of photovoltaic agriculture. Xiaobian makes an overview of the problems that everyone usually consults.

Can agricultural greenhouses and fish ponds be installed with distributed photovoltaic grid-connected systems?

The “heating and heat preservation” of greenhouses has always been a key issue that plagues farmers. "Photovoltaic agricultural greenhouse" is expected to solve this problem. Due to the high temperature in summer, many types of vegetables can't grow normally in June-September, and the “photovoltaic agricultural greenhouse” is like a spectrometer in the exterior of agricultural greenhouses, which can isolate infrared rays and prevent excessive heat from entering the greenhouse. In the dark, it can prevent the infrared light in the greenhouse from radiating outward, reducing the speed of the fall of the traumatic temperature and maintaining the heat preservation effect. “Photovoltaic agricultural greenhouses” can supply electricity for lighting in agricultural greenhouses, and surplus electricity can be connected to the grid. In the "photovoltaic agricultural greenhouse" in the form of off-grid, it can be matched with the LED system. The daylight blocking light ensures the growth of plants and generates electricity at the same time; the night LED system applies the power generated by the daylight to provide illumination.

PV arrays can also be set up in fish ponds. Ponds can continue to raise fish. Photovoltaic arrays can also provide good shelter for fish farming, and better solve the contradiction between the development of new energy sources and the large occupation of land. Therefore, distributed photovoltaic power generation systems can be installed in agricultural greenhouses and fish ponds.

subsidy:

There are two ways to reduce the amount of electricity generated by photovoltaic greenhouses: one is a small-scale distributed photovoltaic power station (such as 6 MW or less), which uses self-supplemented residual power to access the Internet, and the generated electricity is sold to agricultural greenhouses according to the grid sales price. Users or other users, the remaining into the grid, can get a subsidy of 0.42 yuan / watt full power; one is larger, directly into the grid. You can apply for national photovoltaic building integration subsidies, and agricultural projects can also apply for subsidies for related agricultural projects, financial subsidies, etc., such as the Agricultural and Finance Department's “vegetable basket” products to produce fruit and vegetable projects. In addition, if the distributed project is no more than 20 MW, it can be connected to the local PV benchmark price, and the record can enter the distributed PV scale control index.

Planting

Photovoltaic agricultural greenhouses can focus on the development of organically produced vegetables, edible fungi and Chinese herbal medicines, moderately develop ornamental seedlings, and increase the added value of unit land output and agricultural products.

Most edible fungi mycelium does not require light during the growth stage, and there is no adverse reaction in low light. Planting mushrooms, oyster mushrooms, Agaricus bisporus and Flammulina velutipes can be grown.