A general overview of the solar energy industry chain

Photovoltaic industry chain including silicon material, wafer, cell, battery components, five links application system. Upstream for silicon material, wafer; Middle to battery, battery components link; The downstream link for the application system. On a global scale, the industrial chain of five links

photovoltaic industry chain including silicon material, wafer, cell, battery components, five links application system. Upstream for silicon material, wafer; Middle to battery, battery components link; The downstream link for the application system. Globally, the LED street light, industrial chain number five links involved in the increased dramatically, photovoltaic industry chain market to show pyramid structure. In the whole industry chain, silicon material especially in high purity silicon material the highest gross margins. Due to the rapid development of photovoltaic industry in recent years, silicon is expected to appear in short supply, the price of silicon material is rising. At the beginning of 2008 from the industrial silicon as raw material after purifying polysilicon prices have risen to around $300 / kg, part of high purity polysilicon even reached $500 / kg. Followed by the silicon wafer production higher margin, and component production and engineering installation lowest profitability, of about 10%. Photovoltaic enterprises at present, most products focus on silicon chips, batteries and battery components, as well as the application systems. Silicon material profit growth was mainly from high purity polycrystalline silicon, and low purity of industrial grade silicon ( The purity of 98% ~ 99%) The price is very cheap. Industrial silicon material production mainly carried out in developing countries, is one of the industrial chain of high energy consumption, high pollution. Industrial silicon material after purification with high purity silicon materials ( The purity in 99. More than 9999%) The high prices. High purity silicon material supplier major companies from the United States, Germany and Japan. With the development of photovoltaic industry, the company has the tendency of expanding its capacity high purity silicon material, such as the United States (HSC company HemlockSemiconductorCorporation) Polysilicon production capacity will be increased from the current 10000 tons to 2008 1. Expanding production to 1, 2010, 450000 tons, expected. 90000 tons; Another company (MEMC company MEMCElectronicMaterialsInc。 ） The capacity will increase from 4900 tons to 8000 tons in 2009. In the global energy demand rising, the traditional high energy prices and rising concern about the environment background, the renewable energy on a global scale to get fast development. Chinese solar photovoltaic industry also has obtained the proud achievement, have sprung up in wuxi suntech, a large number of LDK solar photovoltaic excellent enterprises. But China the whole solar energy photovoltaic industry development is very desirable, is the core technology behind, the industrial chain unbalanced development, low product added value. And closely related to the development of the industry chain and industry outlook, correct understanding of the solar pv industry chain development present situation and problems, is to promote the healthy development of the domestic photovoltaic industry conditions.