Installed solar street lights need 100 years to recover the cost?

Do not consume electricity, without laying lines, just a solar panel, you can light up the city's night. Once upon a time, solar street lights quietly appeared in the streets of some cities. However, this environmentally friendly street lights always free in the mainstream edge. In the major cities in China, the traditional power street lamp is still the absolute protagonist.

Recently, the Internet rumors that a message is causing strong concern. The message said: a unit of a bill, the installation of a solar street lamp takes 100 years to recover the cost. Is that true? Why is it difficult to popularize solar street lights?

The picture shows the damaged solar street lamp in Wuhan Park

Wuhan, a park that solar street lamps can save a lot of money, but later found that after accounting is not the case.

In September 2006, the park has installed more than and 200 solar street lights, when the average per lamp installation fee of about 10 thousand yuan. The park is only 4 hours per night lighting, if the installation of ordinary lights of 20 watts, the total annual consumption of each lamp is about 29 degrees. According to 1 yuan per kilowatt hour of electricity, the annual electricity tariff per lamp is $29. Calculate, this is a solar street lamp can save the cost of a year.

As a result, only 10 thousand yuan fee was invested, the installation of a solar street will be used continuously for 300 years to break even. Today, the cost of each lamp down to 3000 yuan, also have to take back the cost of 100 years. Even if the lighting time is extended to 8 hours a day, have to be used for a continuous period of 50 years.

Although the solar street lamps do not have electricity, but the battery board 3-5 years need to be replaced. Batch replacement battery board, but also a small investment. As a result, some of the solar lights in the park later broke down, and the park was no longer maintained or replaced because of economic reasons.

In April 2009, Wuhan Hankou beach had installed the part of "complementary scenery" street, then became a unique landscape. Soon, the city also installed several other wind or solar street lights. However, some people complain that these lights are not bright, basically do not play the role of lighting. In this regard, the construction side has said that the current level of technology, new energy lamp depends on wind and solar energy and other natural resources is very high, plus the lamp is cold light, compared with the traditional street lamps, there will be differences in the effect of natural lighting.

Who is not willing to be named Street Department staff bluntly: now it seems that the original installation of those solar street lights, is the failure of the street lamp, did not achieve the desired results. "

[1] [2] next page