1、 Typical Design Scheme for Photovoltaic Agricultural Power Station

1. Project subject positioning

Construct a photovoltaic agricultural industrialization demonstration base in the planned area, covering an area of approximately 2000 acres. It is a comprehensive demonstration park that integrates and utilizes the resources, industries, and location advantages of the county within the planning scope, with the development of the photovoltaic industry as a priority, modern agriculture being developed, guided by the government and operated by enterprises, and constructed and managed using the concept of industrial parks. The goal is to promote the modernization of agriculture and increase farmers' income. Based on modern technology and material equipment, it implements intensive production and enterprise management, and integrates various functions such as agricultural production, technology, ecology, and tourism.

After completion, the project will become a modern photovoltaic agricultural industry demonstration base with advanced provincial facilities, reasonable agricultural functional system design, representativeness, and demonstration. This project intends to leverage Israel's advanced greenhouse technology, combined with local climate characteristics, to position itself as a production base for high-end agricultural products in the area, driving the production of high-end agricultural products (including high-end organic fruits and vegetables, fungi, and medicinal herbs) within a 300 kilometer radius, and even becoming a production base for high-end, cross regional economic crops.

2. Overall scheme design

Plan layout: Construct 90 connected greenhouses and 75 multi-functional greenhouses, with the overall positioning of producing organic, high-end, high value-added economic crops such as fruits, vegetables, fungi, etc.
Total capacity: 50MW.
Joint greenhouse: Each greenhouse covers an area of 6000 square meters (excluding 5110 square meters of front and rear roads), with an installed capacity of 492.8 kW; The greenhouse roof is arranged in a north-south direction, and photovoltaic modules are arranged on the south roof. It is recommended to use 280W high-efficiency monocrystalline silicon modules for the modules;
Joint greenhouse is mainly used for intercropping or intercropping different crops with temperature requirements in different seasons. Reasonably connect intercropping according to the length of the growth period of different crops. The three-dimensional cultivation of vegetables with different light characteristics, fully utilizing the space and light characteristics inside the greenhouse, and unleashing the production potential of limited ground.
Multi functional greenhouse: Each greenhouse covers an area of 3000 square meters (excluding 1425 square meters of front and rear roads), with an installed capacity of 73.92 kW; In the multifunctional shed, components are arranged on the top of the bacterial room, and it is recommended to use 280W high-efficiency monocrystalline silicon components for the components.
Multi functional sheds belong to intelligent photovoltaic agriculture. Planting plants in a winter warm greenhouse in front of the shed, factory style edible mushroom farming behind the shed, and electricity generation on the roof of the shed. One shed for three purposes, energy cycling, water conservation, land conservation, and energy conservation.

3. Investment and income calculation

Overall investment: The unit cost of the connected greenhouse is about 350 yuan/m2, and the average unit cost of the multifunctional greenhouse is about 310 yuan/m2. The overall project cost is estimated;
Agricultural revenue: The initial investment cost for agricultural production equipment and cultivation systems in the project is 215 million yuan, and the annual material and maintenance costs for the agricultural sector are 20 million yuan. According to preliminary calculations, the investment payback period for agricultural projects is approximately 6.5 years.
Partial revenue from photovoltaics: The first year of operation for the project is 1020 hours, with an average of 921.68 hours and an average annual net profit of 8.9515 million yuan. Based on a capital of 20%, the pre tax internal rate of return before financing is 8.31%, the capital return rate is approximately 12.33%, and the investment payback period is 10.12 years.
Conclusion: Through photovoltaic agriculture, the deep integration of photovoltaics and agriculture yields good returns for both agriculture and photovoltaics.

4. Recommended development and business model

Method 1: The two major sectors of agriculture and photovoltaics are invested by photovoltaic companies. After completion, the photovoltaic and agricultural parts are independently operated by the photovoltaic and agricultural entities, respectively. The land leasing costs are borne by the agricultural companies, and the greenhouses can be used free of charge or pay a small rent. Agricultural enterprises hire farmers;
Method 2: The photovoltaic part is invested by photovoltaic enterprises, while the agricultural part is funded by photovoltaic enterprises or invested and constructed by local agricultural companies/cooperatives. During the operation period, the photovoltaic enterprises pay the rent for the roof.
Method 3: After being fully invested and operated by photovoltaic enterprises for 10 years, farmers can master the planting technology, and the enterprise can hand over the intact greenhouse to farmers for operation free of charge. At the same time, the enterprise is exempt from paying the land rental fee for building the greenhouse, and only operates the photovoltaic power generation part;
Method 4: Open greenhouse. If farmers request to cultivate land, the land rental fee will not increase. The agricultural part will be operated by farmers, and the photovoltaic part will be operated by enterprises.

2、 Industrial and Commercial Photovoltaic Power Station Solution

Overview: Industrial and commercial photovoltaic power generation refers to a complete system that integrates photovoltaic modules, string connected grid inverters, distribution boxes, grid cabinets, and other equipment design. It directly converts solar energy into electrical energy, inputs it into the grid connected inverter, converts DC electricity into AC electricity through the inverter, and outputs it to the low-voltage grid user side for grid connection;
Usage: Public institutions such as enterprises, industries, hotels, hospitals, agricultural greenhouses, etc;
Capacity: 20KW-6000KW;
Characteristics: As a supplement to electrical energy, this photovoltaic power station prioritizes the use of electricity for user loads. During peak electricity consumption periods, it can reduce the power demand of owners on the grid, effectively save enterprise electricity costs, and achieve energy-saving and emission reduction benefits.
economic performance:
1. A one-time investment of 500000 to 10 million yuan can provide a stable investment return rate of 20% -30% per year, with an investment return period of over 25 years, which is more cost-effective than depositing in a bank;
If the roof conditions of the enterprise are good and the operation is stable, or if it is a school, hospital, government agency or other public institution, Shenzhen Yingli New Energy can fully invest in the project, and the roof owner only needs to provide the house;
At the top, solar green electricity can be used at a price lower than the city's electricity, and energy-saving benefits can be shared without spending a penny, contributing to future generations staying away from haze.
3. If the local government also provides subsidies, the investment return rate will be higher. You can consult by phone for specific details