The impact of photovoltaic power generation on economy and society
It can bring actual economic efficiency, here is a simple calculation: the state subsidizes photovoltaic power generation projects for 20 years, and local governments also have various corresponding subsidy methods. Generally, the cost can be recovered in 5-8 years, while the operating life of photovoltaic power plants is 20-25 years. There is also a social contribution to emission reduction.
The economic impact of photovoltaic power generation on the local area
First, the industrial structure will be further optimized. To build a distributed photovoltaic power generation application demonstration area, the photovoltaic industry investment will gradually shift to distributed projects, focusing on the development of rooftop distributed photovoltaic power generation systems mainly based on large industrial parks, economic development zones, public facilities, and residential buildings.
Second, industry concentration will further increase. The merger and reorganization of upstream polysilicon production and midstream component production will be further accelerated, and a group of enterprises with small asset scale and poor economic benefits will withdraw from the market in the downstream power station investment and operation link. The photovoltaic industry will gradually form a group of industry-leading enterprises with large assets, strong core competitiveness, and regional integration capabilities.
Third, cross-industry integration will be further promoted. Based on the regional advantages, resource advantages, industrial advantages and scientific and technological advantages of each region, my country’s photovoltaic industry will realize the prolific integration with poverty alleviation, agriculture, climate and environment industries, and give priority to the development of the most basic, most advantageous conditions, able to The subdivided industry that made the first breakthrough.
Fourth, the driving role of innovation will be further highlighted. “Internet + Photovoltaic” has become a development trend, and the intelligence level of my country’s photovoltaic industry will be further improved, and a large number of disruptive business models and technological innovation enterprises will be born.
Fifth, the pace of “going out” will be further accelerated. Under the situation of domestic overcapacity and the shadow of European and American sanctions, accelerating the transfer of production capacity to countries along the “Belt and Road” has become a realistic choice and an important support for the sustainable and healthy development of my country’s photovoltaic industry. These countries and regions are expected to become the backbone of my country’s photovoltaic industry Development of undertaking areas and new profit growth points.
Impact of Photovoltaic Power Generation on Economy and Society Essay
In 1839, French physicist A.E. Becquerel accidentally discovered that a voltaic battery composed of two pieces of metal immersed in a solution would generate an additional voltaic potential when exposed to sunlight. In his published paper, he described this phenomenon as Known as the “photovoltaic effect”. The “photovoltaic effect” is a phenomenon in which the distribution and concentration of carriers that can conduct current in an inhomogeneous semiconductor or semiconductor and metal mixed material change under the action of light, thus generating a potential difference between different parts. This is the basic principle of photovoltaic power generation.
More than 100 years later, with the gradual understanding of the physical properties of semiconductors and the progress of processing technology, major breakthroughs have been made in photovoltaic research. American scientists Darryl Chapin and Gerald Pearson found that silicon is more sensitive to light after doping a certain amount of impurities when they experimented with semiconductors at Bell Laboratories. In 1954, Bell Laboratories made monocrystalline silicon solar cells for the first time, which gave birth to the practical photovoltaic power generation technology that converts sunlight energy into electrical energy. The first ray of dawn in the era of solar energy finally came!
Influencing factors of photovoltaic power generation
Light intensity is an important factor affecting photovoltaic power generation. Taking the northern hemisphere as an example, the sun shines directly on the Tropic of Cancer on the day of the summer solstice, and the sunshine conditions on that day reach the peak of the year, but the power generation on that day does not reach the peak. Therefore, light intensity is extremely important for photovoltaic power generation.
The silicon-based solar cells currently put into commercial use are particularly sensitive to temperature, and the peak power of the cells decreases as the temperature increases. Theoretically, the greater the light intensity, the more photovoltaic power generation.
Socio-Economic Reasons for Developing Photovoltaic Power Generation
According to the national policy, we must take the road of sustainable development. From the perspective of our country’s future social and economic development strategy, the solar photovoltaic industry will be the guarantee of our country’s energy.
Photovoltaic power generation is a technology that directly converts light energy into electrical energy by using the photovoltaic effect at the semiconductor interface. It is mainly composed of three parts: solar panels (components), controllers and inverters, and the main components are composed of electronic components. The solar cells are packaged and protected after being connected in series to form a large-area solar cell module, and then cooperate with power controllers and other components to form a photovoltaic power generation device.
Economic and environmental benefits brought by photovoltaic power generation
At present, the state strongly supports the new energy industry, especially for investment in distributed photovoltaics. The current national subsidy for photovoltaics is 0.42 yuan/kwh, and the subsidy period is 20 years. As a long-term investment, it can obtain relatively stable investment income. Today, the investment income is calculated with 100kw installed distributed photovoltaics.
- The annual power generation of 100KW is about: 100KW×4×365×0.8=116800 kilowatt-hours (the daily average full-power operation hours are taken as 4h, and 0.8 is the empirical coefficient of power generation efficiency).
- The electricity price is: desulfurized coal subsidy electricity price (about 0.41 yuan/kWh in Hunan) + state subsidy (0.42 yuan/kWh) = 0.83 yuan/kWh (the other full online is 0.85 yuan/kWh).
- Annual electricity fee income = on-grid electricity x on-grid electricity price = 116800 x 0.85 = 99280 yuan (calculated based on the full amount of electricity on-grid).
The Economics of Photovoltaics
The prospect of photovoltaic power generation is increasingly optimistic. 1. Photovoltaic power generation utilizes the vast and uncultivated land resources in the Gobi to build power generation equipment, coupled with large-scale power generation, which greatly reduces the cost of land. Second, the sufficient light in the Gobi area is conducive to photoelectric conversion, which can increase power generation and is economical. Third, photovoltaic power generation technology is becoming more and more mature, the photoelectric conversion rate has been greatly improved, and the unit power generation cost has been reduced. Fourth, the government strongly supports photovoltaic clean energy power generation, coupled with the improvement of my country’s battery technology and the improvement of the west-to-east power transmission system, it has ensured a bright future for Gobi photovoltaic power generation.
What are the economic and social impacts of photovoltaic power generation
The limitations of photovoltaic power generation as a new energy power generation mainly include the following points:
1 Impact of climate on photovoltaic power generation. When adopting photovoltaic grid-connected power generation without battery scheme, if the climate over a city changes greatly, it will cause large fluctuations in power load; when the air quality over a city such as air pollution, or visibility becomes poor It will reduce the online or real-time output of photovoltaic power generation.
2 Geographical location, photovoltaic power generation equipment can basically only be attached to the installation and construction of buildings, which is the so-called photovoltaic roof on-site power supply. If you leave the building to build photovoltaic power generation, it will greatly increase the cost or damage the environment and ecology, which will greatly affect the photovoltaic power generation.
3 Capacity transmission limitations. After solving the cost problem of photovoltaic power generation, high-power, high-voltage, and long-distance transmission of power from the desert area to the load center, since photovoltaic power generation does not have the rotational inertia of traditional motors, governors and excitation systems, it will bring great benefits to the AC power grid. New economic and stability issues. Regardless of using AC or DC high-voltage high-power long-distance transmission of electricity from desert areas.
4 The light energy conversion efficiency is low. Compared with the conversion efficiency of traditional energy (mineral energy, petroleum, water energy, atomic energy, etc.), the conversion efficiency of photovoltaic energy is not satisfactory.
5 Alternating day and night. With the influence of the sun’s radiation angle and the alternation of day and night, its power generation is also affected.
Compared with these limitations, photovoltaic power generation has specific and unique advantages:
- The solar energy storage is huge and there is no risk of depletion.
- Safe and reliable, no noise, no pollution emission.
- It is not limited by the geographical distribution of resources, and can take advantage of the advantages of building roofs; such as areas without electricity, and areas with complex terrain.
- It can generate electricity and supply power on the spot without consuming fuel and erecting transmission lines.
- High energy quality.
- It is easy for users to accept emotionally and is beautiful.
- The construction period is short, and the time spent in obtaining energy is short.
The photovoltaic industry is a sunrise industry based on semiconductor technology and new energy demand, and will be the commanding heights of global advanced industry competition in the future. In recent years, the global photovoltaic market has undergone several ups and downs, showing a continuous upward trend in general.
Research on the impact of photovoltaic power generation on economy and society
Protect the environment, reduce pollution; save limited coal and water resources. The Inner Mongolia Autonomous Region belongs to the central and western regions of my country. The total annual radiation in the region is between 4830 and 7014MJ/m2, second only to the Qinghai-Tibet Plateau, ranking second in the country. The solar energy resources are very rich and suitable for the construction of large-scale photovoltaic power plants. The photovoltaic power station is located in Damao Banner, Baotou City. The construction of the power station has no impact on local agricultural and animal husbandry production, and the construction of the power station can improve the stability of the region and drive the development of the local economy.
The impact of photovoltaic power generation
Photovoltaic roofs, that is, the disadvantages of installing photovoltaic panels on the roof, mainly include the following three points:
- Damage to the house. When installing photovoltaic panels, if the operation is not standardized, it will easily bring safety hazards;
- Mold is produced, and it is easy to produce mold between the photovoltaic power generation panel and the roof;
- Affected by the weather, the power generation effect is good on sunny days, but the normal use of electricity will be affected on cloudy and rainy days.
Economic Benefits of Photovoltaic Power Generation
About 170kw can be installed on 5 mu of land, so the annual net profit is about 130,000 yuan. Photovoltaic power generation is an emerging investment field, which contains a lot of wealth and business opportunities, and most of them are very reliable and have significant benefits. Countless people have seen self-built power generation, investment and hope that the development prospect of photovoltaic power generation is also very good. Now the country is vigorously promoting it, and the local government’s policy subsidies have kept the photovoltaic power generation industry at the forefront of new energy. front end.
