A photovoltaic panel assembly is a power generating device that produces direct current when exposed to sunlight, consisting of a thin, solid photovoltaic cell made almost entirely of semiconductor material, such as silicon. Since there is no active part, it can be operated for a long time without causing any loss. Simple photovoltaic cells provide energy for watches and computers, and more complex photovoltaic systems can illuminate the home and power the grid. The photovoltaic panel assembly can be made in different shapes, and the components can be connected to generate more power. In recent years, photovoltaic panels have been used on rooftops and building surfaces, and even as part of windows, skylights or shelters, which are often referred to as photovoltaic systems attached to buildings.
Major domestic solar cell manufacturers are experiencing a rare "rainy weather." Due to more than 95% of capacity exports and too much reliance on the European market, domestic solar cell companies have been continuously affected by a number of negative factors in recent months: the European debt crisis, the euro plunge, and Europe cut solar subsidies. This series of unfavorable factors indicates that domestic solar cell manufacturers are both worried and far-sighted. However, domestic companies that are responsive are trying to control operational risks from both the cost and demand side. The domestic solar cell manufacturing industry has two distinct characteristics. The first is the rapid development of “domestic speedâ€. The global market share has soared from 1% in 2003 to 30% in 2009. Battery manufacturers such as Suntech, Yingli and Trina Solar have emerged.
Second, it is too dependent on the European market. In 2009, domestic solar cell production capacity was about 2.4 million kilowatts, but domestic solar power installed capacity was only 120,000 kilowatts, 95% of production capacity, of which Europe is the most important market. In the past few years, Europe has been the focus of world solar photovoltaic power generation. In 2009, Germany, Spain, Italy and the Czech Republic added more than 4.2 million kilowatts of installed capacity, accounting for 60% of the world. Since the beginning of the year, Greece, Spain and other euro-zone countries have experienced debt crisis, the euro exchange rate has turned sharply, the euro against the US dollar fell more than 12%, domestic solar cell manufacturers suffered serious losses.
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