Solar energy is known of clean energy. But most people do not know, according to the current domestic production technology, to produce 1 kilowatt PV module, generally need to consume about 4000 kwh of electricity.

“China has become the world’s third largest PV manufacturing base, but nearly 95% of China’s solar cell production capacity for export, which means we consume a large amount of energy for foreign output ‘green’ working environment for others.” Nanjing She Haifeng, deputy general manager of optoelectronics, said Sheng.

Reporters found that China’s PV industry to reverse the “green exporter” of the embarrassing situation, the key is to promote the development of solar domestic market, the energy strategy from the perspective of the government has issued preferential policies to encourage businesses and households to use solar energy to promote PV power grid, the clean energy at home.

“Daily industry” high-energy worries.

Solar photovoltaic industry in China developed rapidly in recent years, in 2006, mainland China in the global solar market share of 15% in Japan, and Germany ranks third in the world. However, the solar energy the “green energy” behind, but includes the high energy part of the letter. Energy Research in Jiangsu Province, according to Professor Wei Qidong, secretary general introduction, crystalline silicon PV industry include preparation, wafer production, cell manufacturing and component package of four areas in which high purity silicon refining, polysilicon ingots and silicon ingots part of extreme power.

It is understood that to produce 1 kilowatt PV module, power consumption index advanced 725 kilowatt hours on average 1275 kwh, while domestic production scale as small, backward technology, extensive management, general needs from 3275 to 5450 kwh , is 3 to 4 times abroad.

Yangzhou, Jiangsu Shunda Semiconductor Ltd, told reporters that a single crystal silicon rod in furnace processing more than 30 hours of electricity in 2006 the company reached 30 million degrees.

Wuxi benefits associated with high PV Technology Co., Ltd. Deputy General Manager Ding Yongming Jia said that the factory is now electricity 10 000 degrees every day, two projects were implemented after the daily electricity consumption will reach 50,000 degrees.
She Haifeng said that from the silicon refined into high-purity silicon process will produce hydrogen chloride, chlorine and other toxic substances, if the recovery process immature, there are significant environmental concerns.

She Haifeng said, “At present a considerable part of the preparation of crystalline silicon production capacity distribution of resources, environmental capacity of the Yangtze River Delta region is very tense, but also open to question.”

Guard surrounded them and have a “green bubble”.

Just two or three years, numerous capital pursuit of profit into the photovoltaic industry. However, the growth rate of the global market and can not digest an exponential growth in our capacity, we must guard against rushing into mass action have a “green bubble.”

China’s solar cell production capacity at present is close to 2000 megawatts in 2005 worldwide production of solar cells less than 1800 MW. Industry generally, in the next few years, the incremental global solar energy market remained at 30% annually, while China’s production capacity has doubled, expected to more than 4,500 megawatts by 2010.

She Haifeng said: “The reckless expansion of many companies simply do not care about changes in the downstream market. Now the Chinese counterparts have started a price war between a number of manufacturers selling at a loss, exports to the North American market, solar modules sold 3.3 U.S. dollars / watt, the actual the cost should be around 3.6 U.S. dollars.”

Due to intense competition, coupled with the upstream silicon material price inflation, China’s solar cell production rapidly from about 20% gross profit margin dropped to less than 10%. Capacity expansion not only in battery manufacturing sector, the trend also extends to the upstream.

As the shortage of speculation with international speculators, solar silicon raw material prices from 2002 to surge more than 20 U.S. dollars per kilogram to the current 230 to 300 U.S. dollars, more than 100% profit margin. This makes many domestic enterprises began swarming into the most upstream preparation of crystalline silicon. But the basic technology in this field was the United States, Japan and other countries blocked the company, the domestic is not yet mature, and many companies dug around people “put together” technology, process rough, the quality of worrying.

According to statistics, developed countries, purified polysilicon per kilogram costs about 20 dollars, while the average cost of Chinese enterprises as much as 50 to 60 U.S. dollars.
At present, Jiangsu Province has begun to realize the problem, clear silicon to stop new projects launched, but at the national level, the urgent need for introduction of the corresponding industries guide policy, preparation of the project early on crystalline silicon scientific planning and rational distribution, control size, and implementation of strict environmental access, to avoid blossom everywhere, redundant construction.

Experts believe that the photovoltaic industry, the first two years the “wealth effect” is to catch up adjustment in 2004 the German government’s energy policy “policy market”, when Germany has increased the investment in solar power subsidies and price subsidies, brought solar cell market “blowout.” But the second half of last year, the German market started to weaken, with the European-made to improve the market supply and demand balance, the Chinese PV industry will greatly reduce the dependence.

The industry also called photovoltaic industry in China should plan as soon as possible, to change the solar energy industry “big industry, small business” situation. Currently, most solar energy enterprises in China are very small, even only a few dozen people, many operators are not professional background, do not have the technical and managerial capacity.

More unscrupulous businesses to cut corners, leading to product quality issues, which will affect China’s PV industry in the international arena. PV industry in China should be as soon as possible the quality and technical standards, establish standards for testing center, paying particular attention to the quality inspection of export products.

Application-oriented: the “sun” remain in the country.

The current international oil prices exceeded 100 U.S. dollars per barrel, while in China under global warming will take more pressure of carbon emission reduction, China’s urgent development of new energy industries. Solar itself is clean, sustainable, and security features, to reverse the PV industry in China “green migrant workers,” the embarrassment, the fundamental way out is to develop the domestic application market, the Government should support the policy of solar power as soon as possible, to “green” at home.

Professor Wei Qidong that photovoltaic power generation without geographical restrictions, life and easy maintenance for 25 years, developed countries have attached great importance to its research and application of preferential policies for large. One is the use of high electricity price, the higher part of the assessment by the whole network. Such as Germany, “New Energy Law” provides 0.5 per kWh of solar electricity purchase issued to residents, while the use of conventional electricity price is only 0.12, prompting Germany’s PV market in 2004 grew 235% to become the world’s largest market.

The other is to take on the PV power plant means a one-time investment subsidies, such as Japan in 1993, proposed a “new Sunshine”, with the roof of the residential and public facilities with photovoltaic solar power generation cost of a one-time grant of 1 / 2 ; the United States, “Energy Policy Act,” provides businesses with solar and geothermal power can permanently enjoy the investment tax credits of 10%.

Estimates show that in China’s Tibet, Xinjiang, Qinghai, Inner Mongolia and other areas of good light conditions, one and a half to two and a half can recover compensation for the production of electricity consumed by solar cells, also in Jiangsu, Zhejiang and other places just 4 years. At present, China does not solar power is mainly used to solve regional electric power issues, should take the lead in economic development, resource and environmental constraints in eastern promote greater public places and family.

Weiqi Dong said, solar power and network technology has no barriers, grid companies should be in accordance with the “Renewable Energy Law” full acquisition of power line demonstration projects, and a clear price subsidies. Jiangsu per unit of thermal power by 1 per cent of money collected to establish the “subsidies for renewable energy fund”, in 2006 reached 200 million yuan, if the thermal power per unit had 2 billion yuan share 1 minute, can solve the electricity price subsidies.

Changzhou Trina Solar Limited and Chairman of where it is recommended that high-century, our country can learn from experience of developed countries to implement photovoltaic roof plans, to give one-time investment subsidies, to encourage developers to install solar roofs in the high-end residential. China’s building energy consumption accounts for 27% of total energy consumption of the community around, ranking first in all kinds of energy consumption.

Construction according to the size and growth of existing buildings by 2020, the country will reach only the equivalent of air conditioning power of the Three Gorges power station of 10 full load power. If 1% of the buildings across the country to use solar photovoltaic system, power-saving 1.3 billion each year degree.

She Haifeng that under the current promotion of commercial and civil cases are still difficult, the Government may force the use of solar and other energy-intensive industry, a certain percentage of green power, focusing on street lighting, infrastructure, and high-grade construction, transportation and communications and other fields to promote solar energy.

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