What is the difference between photovoltaic products and solar energy?
Photovoltaic and solar energy is a concept.Photovoltaic (Solar Power): solar photovoltaic power generation system (Solar power system) for short, is a kind of semiconductor material using solar photovoltaic effect, will be directly converted to a new generation of electric power system with solar radiation, operate independently and grid connected in two ways.
But in general, as many of the world's oil and gas production areas of political and economic instability, many governments are taking active measures to reduce dependence on foreign energy sources. Solar energy provides an attractive power generation program, and will not form a serious dependence on foreign energy. In addition, the increasingly serious environmental problems and fossil fuel power and political reasons of climate change risk formation, prompted the government to implement the aims to reduce carbon dioxide and other greenhouse gas emissions reduction strategy. Solar energy and other renewable energy sources contribute to the solution of these environmental problems.
Photovoltaic technology has many advantages such as: without any mechanical moving parts; in addition to sunshine, without any other fuel, can work in the sun and the oblique case; at the same time solar modules without maintenance, to minimize operating costs; and from site selection, is also very convenient, in the roof of the city open space, can be used. Since 1958, solar photovoltaic effect in the form of solar cells in the field of space satellites for the first time the application of energy. Today, the small automatic parking meter and rooftop solar panels, solar power center to the vast area, its application in the field of power generation has spread all over the world.Solar energy is a rapidly growing form of energy, the solar market has made great progress in the past ten years. According to information, according to the average annual installed capacity of solar power systems, the global solar market composite average annual growth rate of 47.4%, from 2003's MW growth of up to 2826 MW in 2007 to. It is estimated that by 2012, the annual installed capacity of solar energy system may be further increased to 9917 MW, while the entire solar energy industry sales may grow from $17 billion 200 million in 2007 to $39 billion 500 million in 2012. This growth is due in large part to the rapidly growing global market demand, rising electricity prices and various government incentives.
At the same time, the solar photovoltaic power generation system, which is centralized, such as large northwest ground photovoltaic power system; one is distributed (divided by >6MW), such as building roof photovoltaic power generation system of industrial and commercial enterprises, residential roof photovoltaic power generation system.Solar photovoltaic effect, referred to as photovoltaic (PV), also known as the photovoltaic effect (Photovoltaic), refers to the uneven illumination of semiconductor or semiconductor and metal parts of the potential difference between the phenomenon of.Photovoltaic is defined as the direct conversion of ray energy. In the practical application, it usually refers to the conversion of solar energy to electric energy. Its implementation is mainly through the use of silicon and other semiconductor materials made of solar panels, the use of light to generate direct current, such as our daily lives can be seen everywhere in the solar cell.
