Features of the system's DC system is the system load DC load and the load on the use of time requires no special installation area of ??solar power, the load is mainly used in the daytime, so the system does not use batteries and does not require the use of a controller, The system is simple, direct use of PV modules to power the load solar power trend, eliminating the need for energy storage and release process in the battery, and the controller energy loss and improve energy efficiency. Its often used in PV pumping systems, some of the temporary equipment electricity during the day and a number of tourist facilities. The following figure shows that a simple DC PV pumping systems. This system has been in the absence of clean drinking water in developing countries for a wide range of application areas, resulting in a good social status of the development of photovoltaic power generation in recent years, rapid development of photovoltaic power generation Internationally, the world has been built and more than 10 trillion W-class photovoltaic systems, six-megawatt photovoltaic power plant networking. The United States is the first development planning of photovoltaic power generation. 1997 also proposed "million roofs" program. Japan in 1992 launched a new light to the plan, the Japanese PV module production in 2003 accounted for 50% of the world, the world's top 10 manufacturers have four in Japan. The new German Renewable Energy Act provides for photovoltaic solar power tariff income, which greatly promoted the development of solar photovoltaic power generation and industrial markets, make Germany the world after Japan's fastest growing PV. Switzerland, France, Italy, Spain, Finland and other countries have also developed photovoltaic development plan, and has invested heavily in technology development and accelerate the process of industrialization. Solar power prospects, Qiaokou solar power, solar power provided by the day-Wuhan days Hui Technology Co., Ltd. giant. Wuhan Tian Hui Ju Technology Co., Ltd. (www.thjnkj.com) (www.thjnkj.cn) strong, credible, in Wuhan, Hubei and other energy-saving equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead day-solar power into the brilliant and you work for a better future!