Polysilicon technology has been monopolized by the foreign country's domestic market is the key to development

With the continuous promotion of new energy policies, people are paying more attention to environmental energy such as wind energy and solar energy, and new energy represented by solar photovoltaic industry is developing rapidly. However, due to the European debt crisis, the photovoltaic industry has become increasingly severe in the international market. The orders for domestic PV companies that rely heavily on exports have shrunk sharply. The shortcomings of serious domestic demand have also surfaced. The launch of the domestic market has also become an industry issue. consensus.

In the eyes of people in the industry, we should not only focus on building large-scale photovoltaic power stations. We should also explore multiple paths for the domestic market on the basis of lessons learned from foreign countries.

The processing profit is getting smaller and smaller. At present, China's solar photovoltaic industry is a typical “two-out”, more than 90% of raw materials rely on imports, more than 90% of the products are exported, and our companies get only intermediate processing profits. Moreover, as the international market space becomes increasingly saturated, the profit margin of solar cell manufacturers is starting to decline from a high point.

It is understood that in 2005, China's production of solar cells or solar cell module companies almost never meet export orders. However, since then, the PV market has not been so good. Some companies with poor brands, no international certification or new construction have seen signs of slow sales.

According to analysis, this is because foreign governments also encourage the development of domestic solar energy companies. Some solar companies in the United States and Germany are constantly expanding.

According to industry insiders, in the competition with foreign companies, if Chinese companies have always been raw materials controlled by people and relying on imports, they must be in a disadvantageous position.

As the world's most widely used solar cell is a crystalline silicon cell, and the high-purity polycrystalline silicon, a raw material for the production of crystalline silicon cells, has its extraction technology monopolized by a few foreign companies, and China's solar energy industry can only be controlled by others. Polysilicon in the international market is also in short supply. China’s demand is large. Some foreign polysilicon manufacturers also impose restrictions on purchases and bans on purchases in China, while others sell defective products to Chinese companies at high prices. Some newly-started enterprises face the “no-wholesale” on the day of production.

Inadequate domestic demand has constrained the development of photovoltaics as the world's largest photovoltaic market in the world. China's photovoltaic domestic market has not yet fully started. Some experts and people in the industry believe that at present, China should adopt active policy measures and “multiple measures” to expand the domestic demand for photovoltaic products so as to contribute to the sustainable development of China's photovoltaic industry.

In fact, “the main factor constraining the development of China's photovoltaic industry is the lack of demand in the domestic market.” Gao Jifan, Chairman of Tianhe Solar Energy, believes that China’s new energy development is still at a stage requiring government support, even though China’s PV industry scale has reached More than 50% of the world, but the domestic market demand only accounts for 5% of the world. "Therefore, how to formulate a better and more sustainable support policy so as to launch China's domestic market will become the best path for China's photovoltaic industry to seek development," said Gao Jifan.

At present, apart from large-scale solar photovoltaic power stations, there is also a combination of photovoltaic and construction. It includes two forms: one is the combination of building and photovoltaic systems, and the other is the combination of building and photovoltaic devices. The former is to install photovoltaic power generation equipment directly on traditional buildings, while the latter is to change the construction method of traditional buildings, using photovoltaic materials instead of building materials, so that the building itself becomes a new power generation body.

Professor Liu Zuming of the Institute of Solar Energy at Yunnan Normal University believes that the area of ​​new construction in China is huge each year. If the planned integration of photovoltaic building is started from now on, it will play a very important role in China's energy conservation and emission reduction, and it will pass through the photovoltaic industry. Buildings integrated with buildings can be value-added through the “green” concept, resulting in more benefits.

The implementation of policies to start the domestic market with backward technology and insufficient domestic demand is the two major bottlenecks restricting the development of China's solar photovoltaic industry. Experts suggest that the state should properly control the import of solar energy production lines, increase research and development investment in the solar energy industry, encourage enterprises to innovate independently, and implement policies to start the domestic market.

The director of the Institute of Solar Energy, Shanghai Jiao Tong University, Cui Rongqiang believes that although China has officially incorporated the photovoltaic industry into the medium- and long-term plans for national energy development, compared with other countries in Germany, Japan, and the United States that have incorporated solar energy into their energy reserve strategies, the Chinese government The importance of solar energy utilization is still not enough. For a long time, due to the lack of a dedicated agency to consider the development of integrated production, research, and research of solar photovoltaic power generation in China, it has caused the disconnection between the application of solar energy products in China and the strength of R&D.

Industry insiders called on the state to implement the implementation rules for solar energy utilization in “Renewable Energy” as soon as possible, and use the policy incentives to start the solar photovoltaic market in China as soon as possible. For example, China can follow the "roof plan" and "building integrated photovoltaic project" in developed countries and encourage units and individuals to build solar photovoltaic power generation distribution power. According to China's national conditions, solar power generation technology will be used for urban roads and residential lighting. The state may also stipulate that the construction of large and medium-sized city government agencies, landmark buildings, and public welfare buildings must install solar power generation equipment to lead the development of “solar energy fashion” in the whole society.

According to a rough calculation, the total area of ​​building roofs in China is about 10 billion square meters. If there is 1% of roofs used for solar photovoltaic power generation, a 50 billion kilowatt-hour of electricity can be provided each year.

The construction of large-scale grid-connected photovoltaic power generation systems has become a strategy for the large-scale use of solar energy in some countries in the world. China has about 1 million square kilometers of desert resources, mainly distributed in the northwestern region where the sun is abundant, and solar photovoltaic power generation has great room for development. Experts suggest that some desert areas with good tourism resources can be used as the starting construction area for large-scale grid-connected photovoltaic power generation projects in China.