Speaking of photovoltaic, many people may be relatively unfamiliar. Then what is called photovoltaic, before answering this question we look at two pictures, so as to understand more intuitively. This is a photo of a solar photovoltaic module.
This module can produce direct current electricity under direct light, and after conversion can become the alternating current we use in our daily life. Now answer what is photovoltaic. Photovoltaic (pv for short) is the abbreviation for a solar photovoltaic power system. It is a new type of power generation system that uses the photovoltaic effect of the semiconductor material of the solar cell to directly convert the sun's radiant energy into electricity, with two types of independent operation and grid-connected operation.
So what are the advantages of photovoltaic power generation compared to coal power and hydropower?
(1) Clean and environmentally friendly, renewable energy ------ solar energy does not cause pollution in the process of use, is the ideal green energy.
(2) wide range of application ---- general household can also use photovoltaic power generation, the requirements of the geographical location is not high
(3) lower cost ----- cost is relatively low compared to hydropower, nuclear power, etc. Since the photovoltaic industry has such advantages, then his development status is exactly how. Next, let's look at the current state of development of the photovoltaic industry. First of all, the industry continues to expand, we look at the installed capacity of photovoltaic, the table shows that from 09 to 11 years, whether global or China, the installed capacity of photovoltaic has increased, even in the global PV market downturn, the European debt crisis and the United States "double reverse" adverse international environment in 2011, China's installed capacity of photovoltaic Still occupies nearly 47.8% share, and achieved an annual increase of 37%.
The table on the right shows the production of photovoltaic solar cells for the years 10 and 11 and the expectations for the next 20 years. In addition, our company has built up a more complete PV industry chain. We have formed an upstream industry chain of crystalline silicon raw materials, silicon rods, and wafer production, a midstream industry chain of solar cell manufacturing and PV module production, and a downstream industry chain of PV product production and PV system application.
