It is a good thing that a technology or a product has economic benefits, but its vitality is directly related to whether it is compatible with social development and whether it has social benefits that surpass other products. The emergence of solar technology and products meets the needs of social development and the requirements of energy conservation and environmental protection. The social benefits brought by it are unmatched by ordinary products. The life of solar lamps is much higher than that of ordinary electric lamps, such as solar lamps. The main component of the solar cell module has a service life of more than 20 years; the life of LED is 100,000 hours; the life of lithium battery is 5 years. Experts disclosed that 12% of China's energy was used for lighting. As a light source, LED at least shows advantages in saving energy. It does not rely on the heating of the filament to emit light, and the energy conversion efficiency is very high. The theoretically required electrical energy is only 1/10 of that of ordinary incandescent lamps. Compared with fluorescent lamps, LEDs can also achieve 50% energy saving effects.
The China Green Lighting Project Promotion Project Office has conducted a special survey. China's lighting electricity consumption is more than 300 billion kWh per year. Replacing all incandescent lamps or partially replacing fluorescent lamps with LEDs, and saving 1/3 of the lighting electricity consumption means 100 billion yuan in savings. Degrees, which is equivalent to the annual power generation of the Three Gorges Project, the world's largest power station under construction with a total investment of more than 200 billion yuan. This is undoubtedly of great significance to China, whose rapid economic development has exceeded the speed of energy supply, and obviously helps alleviate energy tensions. Similarly, the US Department of Energy also has a similar forecast. By 2010, if half of the incandescent lamps in the United States were replaced by LEDs, the electricity cost savings would reach 35 billion US dollars.
According to the statistics of the National Bureau of Statistics, in 2006, China's daily consumption of 2,587,979 million KW / H of electricity, of which urban lighting electricity consumption can reach 12%, about 343.05 billion KW / H of electricity. Domestic urban lighting mainly uses high-pressure sodium lamps and metal halogen lamps. Its characteristics of high energy consumption and low photoelectric conversion rate will damage China's energy economy, increase China's production economic cost, and restrict China's circular acceptance economy and ecological balance.