A long history of human use of solar energy. Many foreign literature, most of the earliest human use of solar energy the most important ancient Greek scientist Archimedes, the ancient Chinese history of solar energy that is far less than the four great inventions known to man, but the last century, China is the world's first use of solar energy One of the country, who in the 11th century there have been no positive flint to make fire this thing a primitive solar concentrator Western Zhou Dynasty in ancient China. Modern Lianyungang wall heaters use solar energy project is the first stage in 1615 -1900 years, usually from the 1615 French engineer Solomon ???? Germany? Cox invented the world's first solar powered pumps date. The main results of this phase of the 1878 French 皮福森 have developed a solar-powered presses. 1883 American Solar Swede Sven-Goran Eriksson made motorcycle. 1860 French Emperor Mu Xiao Feng's life developed the world's first parabolic solar cookers, for the use of the French army in Africa. The second phase of the project wall-mounted solar water heaters Lianyungang in 1901 -1920 years, this stage is the focus of the world's solar research, solar power plant remains. However, the use of condensing mode of diversification, and began using flat plate collector and low boiling point working fluid. Scale colleagues apparatus also has expanded, and the largest output power has reached 73.55KW, practical value is increased, but the cost is still high. Energy pumping device used to automatically track the sun's street cone concentrator, power is 7.36KW. Wells in 1902 and 1908 the United States built the five sets of two-cycle solar engine, with a total area of ??1250㎡ lighting, power of 5.4 × 10 × 10 × 10 × 10W.