How long will it take to install a solar street lamp to recover the cost?

Without consuming electricity and laying lines, only one solar panel can light up the city at night. Once, solar street lights quietly appeared on the streets of some cities. However, this environmentally friendly street lamp is always on the edge of the "mainstream". In major cities in China, the traditional electric energy street lamp is still the absolute protagonist.

Recently, a news circulated on the Internet has caused strong concern. The news said: "A unit has calculated an account and it takes 100 years to install a solar street lamp to recover the cost." Is this statement true? Why is it difficult to popularize solar street lights?

A park in Wuhan thought that solar street lights could save a lot of money, but later it turned out that this was not the case.

In September 2006, more than 200 solar street lamps were installed in the park. At that time, the average initial installation cost of each lamp was about 10,000 yuan. The garden is only illuminated for 4 hours per night. If 20-watt ordinary street lamps are installed, the total power consumption of each lamp is 29 degrees per year. Calculated at 1 yuan per kilowatt-hour, the annual electricity cost for each lamp is 29 yuan. Counting it, this is the cost that a solar street lamp can save in a year.

In this way, only counting the initial installation cost of 10,000 yuan at that time, it would take more than 300 years of continuous use to install a solar street lamp to be cost-effective. Today, the cost of each lamp is reduced to 3,000 yuan, and it will take 100 years to recover the cost. Even if the daily lighting time is extended to 8 hours, it must be used continuously for 50 years.

Although solar street lights do not use electricity, the battery panel needs to be replaced every 3-5 years. Mass replacement of battery panels is also a considerable investment. As a result, some of the solar street lights in the park were broken, and the park no longer maintained and replaced them for economic reasons.

In April 2009, Wuhan Hankou Jiangtan had installed some "wind-scenery complementary" street lamps, which became a unique landscape at that time. Soon, wind or solar street lights were installed on several other roads in the city. However, some citizens have complained that these street lights are not bright enough to basically fail to illuminate. In this regard, the construction party has stated that the current technical level is limited, and new energy street lamps are highly dependent on natural resources such as wind energy and light energy. In addition, these street lamps are mostly cold light sources. Compared with traditional street lamps, they will naturally appear Differences in lighting effects.

A staff member of the street lamp department who did not want to be named bluntly said: "It seems that the solar street lamps that were installed at the time were failed street lamps and did not achieve the expected results."

Insiders: 10 years of normal cost recovery

A few days ago, people in the industry told reporters that the solar street lights on the Internet "can only recover costs for hundreds of years", mainly for informal purchases or high-price purchases. "Normal conditions can recover costs in about 10 years. "

Sun Maoqin, legal representative of Hunan Xinrui Energy Development Co., Ltd. He told reporters that the solar street lights on the Internet "can only recover costs for hundreds of years", mainly aimed at the situation of informal purchases or high-priced purchases. Sun Maoqin said: "The cost can be recovered in about 10 years under normal circumstances."

Sun Maoqin said that the current market price of a solar street lamp is about 3,000 yuan, which can be used for 7 days on rainy days. In the later maintenance, the most important thing is to replace the battery. The cost of a battery is about 600 yuan. The battery with poor product quality will be replaced even in one year. If all of them are to be replaced, it is a large expenditure.

Mr. Xiong, a solar technology production enterprise in Ganzhou, Jiangxi Province, said that the company's main business currently includes solar street lights and city circuit lights. Last year, there were more than 6,000 solar street lights sold from him, which is three times more than the traditional city circuit lights. It reflects the gradual recognition of solar street lights in the market.

"There is no need for complicated and expensive wiring, and the lighting layout can be adjusted arbitrarily. It is energy-saving and pollution-free. It is also very convenient to replace. It mainly saves electricity and labor costs." Manager Xiong said, "Installing a traditional city circuit light The labor cost is more than 1,000 yuan. Now the price of solar energy has dropped from more than 10,000 yuan to 3,000 yuan. The gap has been further shortened. The biggest convenience is that if one of the city circuit lights is broken, it is often necessary to dig the road to find the reason, which takes time Effortless, and solar street lights are installed independently and replaced independently. "

The reporter learned from many solar street lamp manufacturers in Jiangxi that the current price of solar street lamps in the province is around 3,000 yuan, which is a lot lower than in the past. According to the current price provided by the manufacturer, the electricity consumption of 2,000 city circuit lights can reach the initial installation cost of solar street lights in as long as 10 years, which is far lower than the solar street lights circulating on the Internet. It takes 100 years to recover the cost.

Status: Difficulties in popularization

Industry insiders pointed out that the situation that solar street lamps can't go on the "road" is delayed, which involves policy issues, promotion strategy issues, and consumption concept issues.

Wuhan street lamp management department introduced that solar street lamps have obvious advantages in energy saving and environmental protection, but due to factors such as poor practicability, excessive initial investment, high maintenance costs in the later period, and immature technology, etc., they are currently experiencing bottlenecks in promotion.

However, the reporter learned from many solar street lamp manufacturers in Jiangxi that the current price of solar street lamps has dropped a lot compared with the past, and the replacement of the storage battery is not replaced by thousands of dollars at the same time as the Internet rumors. According to Mr. Liu, a sales consultant of a photovoltaic company in Wuhan, solar street light batteries can generally be used for 3-5 years. According to the size of the battery capacity, the replacement price is also different.

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