[Agricultural and solar complementary] The most detailed summary of the construction points of solar agricultural greenhouses
Publish Time：2022-10-12
Sources：
1. Advantages of developing agricultural and photovoltaic complementary projects
Advantages of land use: photovoltaic power generation on the shed, ecological breeding and planting under the shed, improve the comprehensive utilization rate of land.
Energy-saving advantages: Part of the photovoltaic power generation can be consumed locally, reducing the loss on the transmission line.
Economic benefits: You can apply for agricultural solar mount funds, and photovoltaics can enjoy renewable energy electricity price subsidies.
Employment advantage: It can provide secondary employment opportunities for landless farmers and increase farmers' income.
Access advantages: The National Energy Administration has included the use of photovoltaic agricultural greenhouse projects into distributed project management, and implemented the benchmark electricity price of photovoltaic power plants, which is a favorable policy for project filing and grid access.
Advantages of photovoltaic poverty alleviation: The National Poverty Alleviation Office requires all localities to take advantage of barren hills and slopes, agricultural greenhouses or facility agriculture in poverty-stricken areas to build photovoltaic power stations to directly increase the income of the poor.
Advantages of project site selection: The demand for land for surface power stations is high. Generally, the site can only be selected on unused land such as barren hills, barren slopes, and tidal flats. The terrain is complex, the geological conditions are poor, and the power station construction is difficult. The agricultural-photovoltaic complementary project can utilize general farmland to realize the construction of photovoltaic power station without changing the nature of land use.
2. Typical types of agricultural greenhouses for agricultural and solar complementary projects
Single shed (components are installed on the front roof, generally planted with negative plants such as edible fungi)
Spring/autumn/winter warm shed (components are installed above the shed, which are distinguished according to the thermal insulation performance, and vegetables, flowers, etc. are grown)
Winter warm yin and yang shed (modules are installed above the greenhouse, the awning is planted with light, and the shade is planted with shade-loving plants)
Double-mode double-mesh shed (The components are installed above the greenhouse, suitable for planting shade-loving crops.)
Townhouses (modules are installed on the sunny slope of the greenhouse, and crops such as traditional Chinese medicine and tea with general demand for sunlight are planted)
Glass greenhouse (modules are installed on the sunny slope of the greenhouse, suitable for planting flowers, etc., for demonstration and seedling cultivation)
Multi-building open type (modules are installed on the sunny slope of the greenhouse, generally suitable for the warm climate in the south)
Elevated agricultural greenhouses (modules are installed on elevated brackets, affected by local land policies)
For agricultural facility power stations, the first thing to do is to clarify the nature of the land, which determines the shape of the agricultural shed. The second is to communicate effectively with the investors. It is recommended to have the participation of the agricultural team to understand the needs of the owners. Third, the current land use is becoming more and more tense. It is recommended to have agriculture first and photovoltaics later to ensure the effective use of land.
3. The specificity of the design of the agricultural light complementary project
1. Requirements for the selection and arrangement of photovoltaic modules
It is necessary to fully consider the lighting requirements of crops in the greenhouse to meet the light transmittance required for crop growth, and at the same time consider the impact of different arrangements on the light in the greenhouse.
2. Requirements for photovoltaic system equipment
The selection of photovoltaic modules, junction boxes, cables, bridges, combiner boxes, etc. needs to consider the impact of the high humidity environment in the greenhouse.
3. Particularity of module installation inclination angle
The greenhouse should choose the front roof inclination that is conducive to the growth of crops according to the construction specifications of the solar greenhouse. If the components are installed on the front roof and also serve as the roof of the greenhouse, the inclination angle design should comprehensively consider the amount of steel used in the greenhouse, the temperature, humidity and power generation in the greenhouse. The factors are determined after technical and economic comparison.
4. The particularity of general layout design
Advantages of land use: photovoltaic power generation on the shed, ecological breeding and planting under the shed, improve the comprehensive utilization rate of land.
Energy-saving advantages: Part of the photovoltaic power generation can be consumed locally, reducing the loss on the transmission line.
Economic benefits: You can apply for agricultural solar mount funds, and photovoltaics can enjoy renewable energy electricity price subsidies.
Employment advantage: It can provide secondary employment opportunities for landless farmers and increase farmers' income.
Access advantages: The National Energy Administration has included the use of photovoltaic agricultural greenhouse projects into distributed project management, and implemented the benchmark electricity price of photovoltaic power plants, which is a favorable policy for project filing and grid access.
Advantages of photovoltaic poverty alleviation: The National Poverty Alleviation Office requires all localities to take advantage of barren hills and slopes, agricultural greenhouses or facility agriculture in poverty-stricken areas to build photovoltaic power stations to directly increase the income of the poor.
Advantages of project site selection: The demand for land for surface power stations is high. Generally, the site can only be selected on unused land such as barren hills, barren slopes, and tidal flats. The terrain is complex, the geological conditions are poor, and the power station construction is difficult. The agricultural-photovoltaic complementary project can utilize general farmland to realize the construction of photovoltaic power station without changing the nature of land use.
Single shed (components are installed on the front roof, generally planted with negative plants such as edible fungi)
Spring/autumn/winter warm shed (components are installed above the shed, which are distinguished according to the thermal insulation performance, and vegetables, flowers, etc. are grown)
Winter warm yin and yang shed (modules are installed above the greenhouse, the awning is planted with light, and the shade is planted with shade-loving plants)
Double-mode double-mesh shed (The components are installed above the greenhouse, suitable for planting shade-loving crops.)
Townhouses (modules are installed on the sunny slope of the greenhouse, and crops such as traditional Chinese medicine and tea with general demand for sunlight are planted)
Glass greenhouse (modules are installed on the sunny slope of the greenhouse, suitable for planting flowers, etc., for demonstration and seedling cultivation)
Multi-building open type (modules are installed on the sunny slope of the greenhouse, generally suitable for the warm climate in the south)
Elevated agricultural greenhouses (modules are installed on elevated brackets, affected by local land policies)
For agricultural facility power stations, the first thing to do is to clarify the nature of the land, which determines the shape of the agricultural shed. The second is to communicate effectively with the investors. It is recommended to have the participation of the agricultural team to understand the needs of the owners. Third, the current land use is becoming more and more tense. It is recommended to have agriculture first and photovoltaics later to ensure the effective use of land.
3. The specificity of the design of the agricultural light complementary project
1. Requirements for the selection and arrangement of photovoltaic modules
It is necessary to fully consider the lighting requirements of crops in the greenhouse to meet the light transmittance required for crop growth, and at the same time consider the impact of different arrangements on the light in the greenhouse.
2. Requirements for photovoltaic system equipment
The selection of photovoltaic modules, junction boxes, cables, bridges, combiner boxes, etc. needs to consider the impact of the high humidity environment in the greenhouse.
3. Particularity of module installation inclination angle
The greenhouse should choose the front roof inclination that is conducive to the growth of crops according to the construction specifications of the solar greenhouse. If the components are installed on the front roof and also serve as the roof of the greenhouse, the inclination angle design should comprehensively consider the amount of steel used in the greenhouse, the temperature, humidity and power generation in the greenhouse. The factors are determined after technical and economic comparison.
4. The particularity of general layout design
In addition to considering the reasonable needs of the power generation process in the general layout, attention should also be paid to the rational arrangement of agricultural production processes, the realization of sightseeing, tourism, and demonstration functions, and overall consideration of functional area division, road planning, flow of people, and logistics organization.
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