A demonstrative project of wind-solar complementary power illumination catches people's eyes along the Liuyang River Scenic Belt in Changsha City, which can produce electric power all by itself through collecting wind and solar energy and transforming it into electricity. This new type of street lamp can generate electrical power by means of wind and solar energy panel at the same time. In addition, it can store energy day and night. The new technology adopted enables it to save more than 20% of energy consumption. In the meanwhile, the green street lamps also apply to wider areas and their life is much longer than the ordinary street lamps.

As this new kind of street lamp consumes electrical power produced all by itself, it may save quite a sum of power and reduce pollutant emission, which are good for environmental protection. Moreover, the wind-solar complementary power illumination enjoys such advantages as wireless, etc. Currently, the wind-solar complementary power illumination system has been put into use in cities like Beijing, Shanghai etc.

Experts point out that the adoption of wind-solar complementary power illumination reflects the Energy Conservation & Emission Reduction policy and is an effective measure in constructing Two-Oriented Society. The wide use of this technology will surely ease the tension between the supply and demand for electric power and raise the urban image of Changsha.