The high cost of the hottest solar power generatio

2022-07-26
  • Detail

Zhangyaoming, an academician of the Chinese Academy of engineering, said that the annual solar radiation received by the perforated land on China's plate samples is equivalent to the power generation of more than 60000 Three Gorges projects. Taking Jiangsu as an example, its solar energy resources are quite rich. Every square meter will produce some common faults every year. The total amount of radiation is equivalent to the combustion of 170kg standard coal, which has good conditions for solar power generation. At the same time, the Yangtze River Delta has become the most concentrated and developed region in the domestic photovoltaic industry, and its production capacity has occupied the fifth place in the world. By 2008, the photovoltaic enterprises in the Yangtze River Delta are expected to break the foreign monopoly on the manufacturing technology of solar cell raw materials, which is expected to greatly reduce the power generation cost

enterprises should treat PV heat calmly

experts point out that solar power generation can enrich the current energy structure. Most cities in the south of China are only in short supply of electricity in the high temperature in summer. It is not cost-effective to build new power plants for just a few months. Solar power generation can effectively fill the power gap. If we increase policy support, some large power users can consider using solar power to generate electricity, which can not only meet their own needs, but also the remaining electricity may be incorporated into urban electricity to share the peak load of electricity

on October 16 last year, Li Yuanchao, Secretary of the CPC Jiangsu Provincial Committee, pointed out during his investigation in CEC photovoltaic (Nanjing) Co., Ltd. that it is an inevitable choice for society to vigorously develop circular economy, save resources and protect the environment. The bottleneck of the application of photovoltaic energy lies in the high cost for heavy loads and the insufficient scope of application. In the future, efforts should be focused on reducing costs and improving product availability

experts pointed out that if we do not conduct in-depth research on the characteristics of the industry and rush into the photovoltaic industry regardless of the actual situation of the enterprise, we will face great risks. China's relevant enterprises should calmly deal with the photovoltaic heat, rely on independent innovation and scientific and technological progress to resolve the objectively existing market risks, and make the photovoltaic industry a pillar industry for China's future economic development

relevant reports: profits are transferred to the upstream. Chinese enterprises are temporarily at the lower end of the industrial chain.

according to China's medium and long term development plan for renewable energy, China's total solar photovoltaic power generation capacity will be 400000 kW by 2010 and 2.2 million KW by 2020. Based on the current 39 yuan per watt of battery modules, the solar photovoltaic cell market in 2010 was 15.6 billion yuan, and the market in 2020 was 85.8 billion yuan. Experts pointed out that the current profit distribution pattern of the solar PV industry has changed, showing a funnel-shaped distribution from downstream to upstream

it has become a famous saying in the industry that silicon is the king. This silicon is not silicon ore or metallic silicon, but high-purity crystalline silicon, and the enterprises producing high-purity crystalline silicon belong to the upstream of the photovoltaic industry

the principle of solar cells is to convert solar energy into DC energy by photovoltaic effect. At present, crystalline silicon solar cells are the most widely used. Unfortunately, high purity crystalline silicon, the raw material for the production of such batteries, is in short supply in China and even in the world. At the same time, the shortage of high-purity crystalline silicon is due to technological monopoly. Germany, Japan and other countries that master the technology are not in a hurry to expand production

since 2004, there has been a blowout of solar cells, and the high-purity monocrystalline silicon rose from 800 yuan per kilogram in June of the same year to 2400 yuan in 2006. Industry insiders predict that the contradiction between supply and demand of polycrystalline silicon in the world will still be very prominent before 2009, and its supply will be alleviated by 2010

according to incomplete statistics, at present, more than 20 enterprises in more than 10 provinces and cities in China are preparing to launch or apply for polysilicon projects, and the announced design capacity is more than 60000 tons, which is greater than the total output of high-purity crystalline silicon in the world. Assuming that all the production capacity is reached within five years, the supply of silicon materials in the world will be eased to a certain extent, and the price of silicon materials will fall to a certain extent

the next step in the production of silicon wafers is the production of solar cells. Solar cells are divided into crystalline silicon cells and thin-film coated cells, indicating that the plastic processing industry is entering a new normal category of medium and high-speed growth. Crystalline silicon cells occupy 93% of the market share, of which monocrystalline silicon cells have the highest conversion efficiency. Thin film coated batteries, including amorphous silicon batteries and polycrystalline materials batteries, currently account for only 7% of the market share

it is understood that Chinese solar cell enterprises are basically concentrated in the Yangtze River Delta and the Pearl River Delta. Industry insiders pointed out that with Taiwan, China has become the third largest solar cell country in the world, and the enthusiasm of Chinese enterprises to produce solar cells has not decreased so far. According to relevant persons from the world bank project team of the national development and Reform Commission, based on the currently reported scale capacity, the solar cell capacity in Chinese Mainland will increase to 1450 MW in 2006 from about 150 MW in 2005

despite the strong demand for solar cells, these solar cell enterprises must face the problem of shortage of high-purity crystalline silicon chips. The price of silicon chip directly affects the profits of solar cell enterprises, because silicon chip accounts for 70% ~ 80% of the production costs of solar cell enterprises

Copyright © 2011 JIN SHI