From the point of economic benefit, according to estimates, 8 m to 4 m street lamps and street lamps, the led solar street lamps, 8 m 4 m street lamps and street lamps power savings per year of about 2190 KWH, electricity saving of 1533 yuan, or have a good profit space, from the Angle of energy conservation and environmental protection, its electricity from photovoltaic power generation, don't need the traditional energy consumption, energy conservation, environmental protection, no pollution.