Solar Street Lights Vs General LED Street Lights

Solar Street Lights

(1)It can be easily installed without the need of paving complicated lines. All you need is to have a cement base and it is OK to fix it with screws.

(2)Building solar-energy road lamps is a one-time investment, which does not need any costs for maintenance or servicing. The costs can be returned in around 3 years, and you can see the benefits in the long term.

(3)There is no potential safety risk. The current for the solar-energy lamps is the safe current of DC36V, which does not cause any safety problem.

(4)The main components for the solar-energy lamps are the solar cell panel with the life span of 25 years and the LED with the average life span of more than 50000 hours. The storage battery has a life span of 5~7 years.

(5)Green and environmentally friendly: it is its special features and advantages in favor of high-rank residential areas, and can keep reducing the realty management costs and reduce the costs of the public areas for the residents.

• 
• 

Public LED Street Lights

(1)The process of installation and construction operation is complicated. It is necessary to lay the cables, for which cable trenches are needed. It is necessary to lay pipes underground with the cables running in the pipes and backfill the soils, involving the need of foundation work. It is also necessary to have a long time for installation and commissioning. The requirements for the topography and lines are complicated and the costs of labor and auxiliary materials are very high.

(2)The expenses of electric power supply are high. In such case, the 250W or 400W sodium lamps are used. If the lamps are used in the long term, the costs of electric power supply are very huge. And moreover, the long-term uninterrupted use requires the maintenance or replacement of the lines and other facilities, leading to the increase of costs year by year.

(3)Potential safety risks: there are various safety risks in terms of construction quality, reconstruction of landscape projects, ageing of materials and interrupted power supply and the clash between the water, electric power and fuel gas pipelines.

(4)The average life span of the traditional electric road lamps is about 10000 hours. As the service goes on, the ageing will become more and more serious.

(5)The larger the construction scale is, the higher the costs of installation will be with the total investment higher than the solar-energy road lamps. Additionally, the losses as a result of the theft of cables are immeasurable.

• 
• 

Material comparison

Suppose the total length of the road to be constructed is 4000m, for which 134 road lamps are to be constructed and the height of each column is 8m and the interval between each two columns is 30m, and the cables used are VV3 x 25 + 2 x 16. Besides this, there is the need of sleeve pipes. Suppose the system will be sued for 10 years.

Item Name	General Street Lights			Solar Street Lights
	Q’ty	Unit Price	Total	Q’ty	Unit Price	Total
	134Lights	2800RMB	375200RMB	134 Lights	8600RMB	1152400RMB
Laying of pipes and cables	4000m	210RMB/m	840000RMB
Supporting service fee	320000×10%		32000RMB
Electricity fee	150W×10h×365days×10year×134Lights÷1000W×0.8RMB		586920RMB
Maintenance fee(labor force and spare parts)	134Lights	1500RMB/10year	201000RMB
Storage battery replacement				134Lights	2500RMB/10year	335000RMB
Total for services for 10 years	2,035,120.00 RMB			1,487,400.00 RMB

The conclusion base don the table above:

(1)To think about the product itself, the construction costs of solar-energy lamps are higher than the traditional lamps.

(2)It showcases the following advantages of the solar-energy road lamps:

Energy saving: the electric power comes from the solar power, which is an endless source of power.

Environment protection: pollution free, noise free and radioactivity free.

Safety: no risk of electric shock, fire or any other accidents.

Easy and convenient for construction: it can be easily installed, not requiring power lines or excavation for trenches, nor any concern for limited power supply.

Longer life span: high technical content, intelligent control system and reliable quality.

High rank: a hi-tech product, green energy sources, environmentally friendly, making the products on a higher rank.

Wide applications: it can be used where there is sunlight. It is especially fit for lighting the green areas and landscapes, scenic spots, high-rank residential areas, the open sections of industrial areas, industrial companies as well as the road lighting for colleges, universities, mountainous regions and villages.

In summary, the features of energy saving of the solar lamps are quite evident.

Common "Tricky" Of Solar Street Lights

With the technological progress and industry mature of the led chip and solar energy components, the price of solar street lighting industry has been developed by leaps and the market of solar street lights is also rapidly expand. With this rapid development, the price of solar street lighting system comes to differ from each other too much so that buyers are confused which one is better for them to choose. The main reason is that some manufacturers ignore to protect intellectual property rights, and lack of power for innovation, brings homogenization competition and finally inevitably lead to price war, and inevitably appear some bad manufacturers "tricky" sales which really do harm to consumers, so buyers shall really be careful of these "traps".

Common "tricky" of Solar LED street lights:
First, bad manufacturers always label false product parameters, such as false power, light pole thickness reduction and so on. The false product parameters label under normal circumstances is hard to find for the customer which also helps it became main means for poor manufacturers to reduce prices and disrupting the market.

Second is the chip brand and quality. LED chip directly determines the performance and price of the lamp! Some bad business takes the advantage of unprofessional customers, and replace famous brand chips with a no-name chip, or by posting the low-grade chip as high-quality chips of the same manufacturers. Such as posing copper connection as a gold connection to deceive consumers to buy low-priced products with high prices. 

Third, to reduce the cost of the cost that sacrificing scientific light distribution system design. In order to reduce costs, bad manufacturers always change or even cancel the light distribution system, which seriously affects the lighting effect such as "light up down", " black under the light ", "zebra effect", "nonuniform illumination", "yellow light circle" and other issues. And these are hard to find out by non-professional without professional testing.

Fourth, poor heat dissipation design. The life of semiconductor devices will be multiple declines when the temperature of the LED chip PN junction increased by each 10 degrees. In other words, heat dissipation is one of the most important guarantees to ensure the life of the lamp and the use of quality. In this regard, poor manufacturers always cut costs mainly by cutting corners, and this damage cannot be found in the beginning use but only after a period of time to see whether it come out.

Fifth is the power quality. The price and quality of Power supply closely contact with the design and selection of internal electrical components, I mean not just whether the light on should be the only thing we concerned. There is a too much example in sell seconds at best quality prices.

Sixth is the problem that the light source of exceeded harmful substances that often encountered in LED manufactures, the main reason is the lighting components of the light source of life always made of the material of low quality which has a great impact during use.

Seventh is misleading the customers by the confusion of concept, such as some manufacturers always not explain that solar LED lights are generally adjustable power use but just say that lighting time simply to deceive consumers of no experience.