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First of all, we must pay attention to investment and income. Photovoltaic agricultural greenhouses are a model that combines with agricultural greenhouse cultivation on the basis of the maturity of photovoltaic power generation products and photovoltaic technology. In fact, regardless of whether the model is old or new, the people are more concerned about the investment and income situation, the investment is high, and the return period is long. Even if it is good, I think the people will not recognize it.
[China Agricultural Machinery Industry News] Agriculture and photovoltaic "marriage" looks very novel, but such "marriage" has been widely used in agriculture, covering planting, forestry, animal husbandry, fisheries, etc., common is agricultural photovoltaic Greenhouse. And this model has become a hot spot in the moment. For such a "marriage", what points do people need to pay attention to as an agricultural-based people?
Agriculture and PV into hot investment still need to consider comprehensive
At present, photovoltaic greenhouses are available in various forms and can be priced according to the situation on the ground. The cost is generally higher than other. According to the capacity of 200 kW that can be built on one acre of land, the installation cost is 8 yuan/W, and all of them should be 1.6 million. With the investment in greenhouses, the price is much higher. If there is no local policy, the explicit support of subsidies, it is difficult to say whether the income can come back, and maybe there is a possibility of losing money. In such a photovoltaic greenhouse project, the application needs to take the road. Even if the road strip is obtained, the average person is also very difficult to bear. Most of the enterprises participate in the construction, and the ordinary people rent the greenhouse.
If some large companies participate in investment construction, it is different from the above concerns. If you invest 10 billion yuan in 10GW photovoltaic greenhouse projects, the annual yield can reach more than 10%, and the recycling period is between 6-10 years. Compared with the traditional industry, the rate of return is still quite high, and the capital recovery cycle is relatively short.
Secondly, about crop planting. Photovoltaic agricultural greenhouses must be clearly defined. Agriculture is still the focus of the project, and photovoltaics are matched. However, in the application process, the photovoltaic panels on the roof may be several times the cost of the vegetables below, and the fruits and vegetables grown in the greenhouses have become a foil.
When people are planting crops, they should consider the light preferences of the plants. Some plants do not require full-day illumination and can meet the photosynthesis required for plant growth in just a few hours. It is also an option to plant a light-spotted plant, such as a mushroom, in a greenhouse.
The third aspect is the value of ecological and environmental protection. Photovoltaic greenhouses are favored, in addition to the economic benefits of the above mentioned, as well as its valuable ecological value. A 1MW photovoltaic power station can generate about 1168,000 kWh per year, save 356 tons of standard coal, reduce carbon dioxide emissions by about 1,000 tons, reduce sulfur dioxide by 3 tons, and reduce nitrogen oxide emissions by 2 tons. And such a power station can be used for 25 years.
After a summary, I personally think that photovoltaic agriculture will be a good direction, and now is in its infancy, everyone is crossing the river by feeling the stones, trying to develop the way of photovoltaic agriculture. However, while developing the development of photovoltaic agriculture projects, there are still many problems: they are susceptible to the weather, not as stable as thermal power generation; the energy density of photovoltaic power generation is low, and if the energy consumption of the plant is large, even if the roof is covered with solar modules, it is not enough. In addition, photovoltaic power generation is now costly and has not really entered the era of affordable Internet access. In the future, with the protection of national policies and financial subsidies, the people will get more from it.
(Original title: What do the people in the photovoltaic marriage need to pay attention to?)