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According to the more than two hundred square meters mentioned by the subject, the situation of the power station is as follows: the installed capacity is 20KW, and the total investment is about 160,000 yuan. The annual power generation capacity is about 26,000 kWh. The installed capacity is 10KW, and the total investment is about 80,000 yuan. The annual power generation is about 13,000 kWh. At present, the electricity price of photovoltaic poles in the third category of the country is 0.85 yuan/KWH. The power generation above is the annual average, and the daily power generation varies according to weather conditions and seasons. The above is grid-connected power generation. If off-grid power generation is used, the cost is higher, so it is not recommended.

Solar street light is an independent lighting system. Simply put, it generates electricity for its own use. It does not need to be connected to 220V thermal power. During the day, solar energy is converted into electrical energy through battery panels and stored in lithium batteries. When it is dark, the intelligent street light control system uses lithium batteries. Power the solar street light source. Generally, the number of continuous rainy days in a normal design is 7 days. If the battery power detection automatic power reduction controller is used, it may be extended to about 35 days. And we know that under normal circumstances, there will be no sun for one month in a row, so it is possible to achieve lights on every night of the year. For the battery panel, it is made of pure silicon board as the main material, and the life span can reach more than 25 years, followed by the led light source, the life span is more than 50,000 hours, and the normal use can be as long as about 10 years. Next is lithium Batteries, currently commonly used lithium batteries for solar street lights in China, with a life span of more than 5 years.

Many customers like to directly ask questions such as how much is the 6-meter solar street light, how much is the 8-meter solar street light, etc. However, from the perspective of my years of experience in the solar street light industry, this question is unscientific, maybe you can know one The approximate amount is stated, but a strict solar street lamp scheme and quotation should be made according to the following points: 1: The customer`s project location, that is, the place of use, because it needs to investigate the local sunshine situation. For example, the same 6-meter 30W light source is illuminated for 6 hours a day to ensure 3 continuous rain and rain. This requirement is due to the different sunshine at the project site The configuration required is different, which is the so-called buy only the right one, not the expensive one 2: The lighting time is different every day, the configuration is also different 3: The guaranteed number of rainy days is different? You think, 3 consecutive rainy days and 6 consecutive rainy days, the configuration size must be different, so the price is naturally different 4: The height of the light pole (that is, the height of the light source to the ground), the height of the light pole is different, the power of the light source is different, and the price is naturally different 5: The brightness requirements are not high. Many customers ignore this point. Even if the same 30W light source, the brightness of the light source made by different manufacturers is different, or the same 6-meter pole, there is a solar street light manufacturer that provides you with 30W , Some manufacturers provide you with 20W, and some manufacturers provide you with 15W, so the price is definitely different If you only want to know the price of a set of lights, please let me know when you know the above requirements. If you are not clear about the above requirements, please contact us!

Because there is no certain industry standard, the solar lighting market is so-called a mixed bag. In many rural road renovations, solar street lamps can be seen. In the construction of new rural areas, LED solar street lamps have gradually replaced traditional street lamps and become rural outdoor lighting. First choice. We can't help asking, what advantages determine the dominant position of LED solar street lights? From the following aspects, make a comparison with traditional street lamps. One, installation steps Traditional street lights need to lay cables, which is difficult to construct in mountainous areas, while LED solar street lights do not need to lay cables. When installing, only a cement base is needed and then fixed on the flange with screws, saving a lot of manpower, Material resources. The installation of solar street lights is even more convenient, only a screwdriver and a wrench can be completed, and the subsequent maintenance is basically free. Later, the integrated street lamps appeared on the market, the appearance was more beautiful, and the installation was very simple. 2. Power consumption City circuit lights work to pay high electricity bills, and long-term uninterrupted maintenance and replacement of lines and other configurations, maintenance costs will also increase year by year. Solar street lights do not have to pay electricity fees at all, and the maintenance cost is also low. There are also many businesses like Zhongyi Technology and Jiyi Solar that recombine and innovate the elements of the traditional outdoor lighting value chain, using photovoltaics, blockchain, Ai-IOT and cloud computing technologies. Create an intelligent Internet of Things management platform, and finally realize the sharing mode of renting and selling street lights, completely eliminating the cost of later maintenance. Incorporate the design concept of smart street lights, detect street lamp data in time, and provide real-time warning to street lights. If abnormalities occur, the system will automatically report for repairs. http://weixin.qq.com/r/xUh2bnrENCdLrT4N9x3X (Automatic identification of QR code) Three, security City electric lighting street lamps are affected by construction quality, material aging, landscape engineering transformation, leakage, abnormal power supply, conflicts between water and electricity pipelines, etc., and many potential safety hazards will occur in the later period. LED solar street lights are ultra-low voltage products with stable operation, safety and higher reliability. Four, aesthetics The solar lighting market has matured, and many solar lamps suitable for lighting scenes have also emerged, such as lawn lamps, buried lamps, Chinese lamps, landscape lamps, etc., all have a place in solar energy. In the past, laying lines for lawn greening often destroyed the original design and soil surface structure, and burying the lines was even more difficult. When solar lamps appeared, all the difficulties were easily solved. The characteristics of solar energy green and non-embedding have become a highlight of the greening transformation of many communities. The solar lawn lamp has various styles and is easy to install. It can be used normally by just inserting the ground rod in the open space, waiting for the night to come and ushering in another light. It is not difficult to see that solar products have been widely used in our lives, and the solar lighting market has matured. At the same time, solar street lights are also green energy-saving products and environmentally friendly products that respond to the call of the country. At present, the market share of solar street lights is increasing year by year, and new energy sources led by solar energy are gradually meeting the needs of new markets. If LED solar street lights are to completely replace city circuit lights in the future, they must be improved from core accessories (battery, light source) , Solar panels), the introduction of aesthetic design and the promotion of more intelligent technology applications, many manufacturers have already joined the field of technology research and development, trying to push solar lamps to the top of the market. https://www.ckbsolar.com/

The life of solar street lights cannot only be calculated as the life of the lamp beads, but the lamp beads, controller, and battery should be considered, mainly the life of the battery. At present, the life of lamp beads on the market is generally about 50,000 hours, the life of solar panels is more than 20 years, and the life of controllers is generally more than 10 years, depending on the life of electronic components. The battery life is short for solar street lights. Generally, lead-acid batteries are 2-4 years, and lithium batteries are 4-8 years, depending on the manufacturer's materials. Nowadays, the solar street light industry is dominated by lead-acid batteries, and the batteries are changed every few years. https://www.ckbsolar.com/

1. Compare brightness and lighting time. The brightness is difficult to define with the naked eye, and only the integrating sphere can accurately measure the light effect value. The brightness is generally lower to the naked eye. 2. Using one stage, the basic unstable solution can expose the problem in less than one month. 3. Open the battery box and look at the battery. Check whether the capacity is up to standard. Fully charge with a charger, and then discharge with a large load. With time and discharge power, you can calculate whether the battery capacity is the specified index. All battery measurements nowadays are based on being fully charged and empty. No tester is accurate. 4. Comparing the size of solar panels, the basic size can also be used as a simple way to judge whether to steal the index. Or when facing solar energy, measuring current and voltage can basically calculate the power. A trick that unscrupulous manufacturers like to use 1. Steal the concept Praise that the lamps are good, the batteries are good, the solar panels are good, and the big brands are also divided into 369 lamp beads. Only the suitable ones are good. At the same time, use the integrating sphere to measure the light effect to know whether it is good. The iron-lithium battery is very good, but most of the used batteries to disassemble the battery are not better than the ternary lithium battery. The lithium battery is protected by a protective plate and will not explode. No matter how good the solar panel is, it depends on the manufacturer's technology and standards. The measured starting power is the correct answer. 2. Steal indicators The index of the lamp is very large, but the actual use is very small. It is difficult to see if it is not professional, it can only be detected with the cooperation of instruments or other manufacturers. Therefore, you get what you pay for, and you must pay attention to the big difference. 3. Stepping on peers Merchants say they are good and step on the quality of their peers. Don't believe it lightly, only actual measurement is true. Many peers have low prices, which are actually stealing indicators. Basic manufacturers make batteries, 12V/1AH is not less than 7 yuan, the cost can only be pulled down by stealing indicators. So don't easily believe in self-selling and boasting. In conclusion, a good lamp can only be tested by time. Try to choose a professional manufacturer. Don't look at the scale. It depends on whether the boss understands the technology. https://www.ckbsolar.com/

If you calculate the cost, the cost of solar led street lights in non-mountainous areas without electricity is undoubtedly too high compared with the city electricity led street lights at this stage. Under the premise of the same quality, take the 6m, 50w solar led street light and the city electricity 6m, 50w led street light as an example, the installation area: the general village of northern Shaanxi with better light. Lighting time: 5h every day. (Solar street lights 3 rainy days). Generally, the material cost of solar energy is around 2000, and the installation cost is around 500, which is 2500. The cost of utility materials is 900. In addition, the construction cost of wiring materials is only 700 on average. The initial cost differs by 900. The mains power is 0.25 kWh for 5 hours a day, 91 kWh for 365 days, 0.6 yuan per kWh (theoretical value). Only 55 yuan a year. In other words, solar street lights need to be used for at least 16 years to save money. But the actual situation is the shortcoming of solar street lights-the battery life is generally 3-5 years! A cost battery will cost 700-800! Not counting labor costs. Taking environmental protection as an example, the production of lead-acid batteries (both lead-acid batteries and gel batteries on the market are lead-acid batteries) seriously pollutes the environment!

Solar panel is the core material of photovoltaic system. The quality of solar panels on the market is also uneven. If there is no professional equipment and technical expertise for the time being, how should we distinguish the quality of solar panels? 1 look at the color Generally speaking, monocrystalline silicon and polycrystalline silicon solar panels have blue appearance, and they are uniformly light blue or sky blue. If the color of the panel is dark and the color is different, then the workmanship is definitely not meticulous. 2 Look at the surface The tempered glass surface of the battery board should be flat and free of foreign matter. In order to increase the production speed, some small manufacturers do not clean the silicone gel that has dripped on the surface of tempered glass. If the silicone is not cleaned, it will affect the power generation efficiency. 3 Look at the battery Each of the battery slices on the battery board is complete, and is formed by cutting the whole body. However, many irregular manufacturers on the market spliced with broken cells to form seemingly complete cells for welding. When we observe, we will see if there are any traces of cutting. There are great risks in this way. The initial stage may not be obvious, but the spliced battery is easy to be disconnected again later, which affects the use of the entire battery board. Of course, this situation is hard to find with the naked eye. 4 Look at the back Look at the quality of the back pressure, whether there are unevenness after the pressure, such as bubbles, wrinkles and the like. 5 Look at the border Due to the low barrier to entry in the solar panel industry, many small manufacturers use manual framing. Due to the uneven framing strength of each frame, the close contact of the frame is not the same, and the shape is not strictly rectangular. The degree is also greatly reduced. Now the aluminum alloy frame is generally used. 6 look at silicone See if the silica gel is evenly distributed around the back, and see if it tightly penetrates into the gap between the back plate and the frame. Carefully observe whether there is a leakage phenomenon in the string welding of the cells. At the same time, it also depends on whether the arrangement of battery cells is regular. 8 look at the junction box Finally, see if the junction box is firm and whether the junction box cover can be firmly and tightly attached to the junction box; see if the wire and cable lock can rotate freely and can be tightened. 9 see prices If the above is difficult to distinguish. The most safe way is to compare prices. Domestic panel prices are fluctuating, although not absolute, but there will be a rough range. If the price given by the manufacturer is much lower than the market price, then we must carefully distinguish. Finally, it is necessary for the manufacturer to provide the corresponding battery board qualification certificate and qualification documents. In summary, there are many key points in the quality control of solar panels, and we have to judge the quality from the subtleties. The above points are only for how ordinary users can judge the quality of solar panels by appearance without professional equipment and professionals. However, some quality problems cannot be observed by the naked eye, or they will only show up after a period of operation. Only by relying on professional means can we discover in time. In order to protect your rights and interests from being damaged, please be sure to choose a professional testing agency for inspection. The actual use locations of photovoltaic power plants are wide, and the environmental conditions are diverse. The accelerated environmental aging test has become an indispensable part in the evaluation and testing of photovoltaic modules and their raw and auxiliary materials. To simulate the outdoor environment, a variety of accelerated aging tests have been developed on the market, such as damp heat test, wet freeze test, thermal cycle test, ultraviolet test, etc., but one of the more typical types is the desert area, which has large sand and temperature changes At present, domestic laboratories cannot basically simulate it.

Solar LED street lights may vary in size (wattage and depend on the required lux), ranging from 4Wp to 100Wp. The battery size should be one of the main concern in regard to the average time of the operation. The solar panel(s) should be able to charge the batteries in the 9–13 hrs of daylight. (The number of hours the light stays on is dependent on your geographical location, seasonal lighting and Weather conditions availability.) You can power the lights of upto 15Wp ratings with convenient Li-ion batteries which can be charged in 5–6 hrs roughly. For ratings >15Wp, Lead-Acid batteries are employed due to the costing issues. Generally, a 18W Solar street light with an average of 1700 lumen output could be operated with a 75–100 AH battery for an operating time of 12–14 hours when fully charged by using a 70 or 80 Wp solar panel (~17.5 V, 3.5 Amps). Coming back to the original question: at least 50% lower energy consumption than Sodium fixture of the same rating.

The solar panel was introduced to overcome the challenge of society of energy resources. The main cause being fulfilled it also decreased the expenditure of per unit energy consumption. The objective of establishment of the solar panel was also a part of the green planet mission.The use of other energies like fuel and coal caused excessive pollution.Through the use of solar panels , this disaster was resolved to a remarkable extent. The solar panel work with the help of the rays that come from the sun.This energy named solar energy reflects on the several solar cells surrounding the solar panel and the heat that is produced by this solar cells are then used for the production of electricity. This is thus a simple and beneficial process of electricity production.

Because even though panels are cheap at 150$ per 300W panel, the installation is 2–3 times that in most of the world, and 7 times that in the USA because of gov regulations, fees and paperwork. The logical places to put solar pv panels are on roofs over building, parking lots and roads or road sides. These are all usually more expensive than open field installations, but not by much in most places except the USA. In cities where the cultural norms dictate white and light colored buildings, even solar panels facing away from the sun will get 20% as much as optimum facing. Note the cost of solar panels is now less than the retail cost of the same amount of low iron glass, solar panels are as cheap as tile and ceramic roofing, solar panels are around the same cost of aluminum siding. This means it`s starting to make a lot of sense to build roofs out of solar panels, rather than add them to a regular roof. I would hate to see panels wasted in the dark. So what should keep happening it so put solar panels in the optimum locations, at least till we have supplied enough to provide 60–80% of our total energy needs, then we can go for marginal locations, and by then the prices will be about half of now. 10–20 years. The big advantage of large solar farms is they are easier to build and maintain. There are even robots that will fill an entire row at a time automatically.

Solar LED street lights is the next big thing that will definitely take the world by storm. Considering the importance of solar street lights I will focus on them and the reasons for India not being able to use them here-: Let us chalk out a few tough hard hitting facts about solar energy and power generation. Firstly, it is expensive to produce electricity from solar power. Quite a lot of solar panels in the market are not very reliable due to a lot of factors ranging from adherence to standards to cheap components. Since it`s a new technology consistent innovation is taking place.A good solar powered street light project must be able to provide enough light to illuminate the area under its sphere. So, each solar powered lamp that is supposed to illuminate, must provide this light when it is needed the most ie. when darkness comes knocking my friend! Solar powered LED street lights must store enough energy in the battery backup for use during the time rainfall or low to no sunshine. They should not lose their charm even during winters. Here are some more reasons why solar powered street lights have already run into problems with regards to reliability and performance. Incorrect Sizing- Incorrect sizing of components that forge a complete working mechanism for solar energy generation, storage and supply system. Number of Hours factor- The number of hours the illumination is supposed to be provided is calculated and a good estimate is settled for, based on the number of sun hours in any given day at a given place and fixed allowances made for those days you may be without the sun shining. Finally, while solar energy generation is expensive it is the most suitable medium in the future for solar powered street lights considering the low maintenance overhead and long life span of LEDs as against the old fluorescent, incandescent based lighting units. However, that being said, incorrect and improper sizing of both the load and the components can effortlessly turn a viable cost effective solution into a terrible nightmare because should you go wrong with the calculations including energy losses in conversion stages (wherever applicable) or the interfacing components, you may realize that changing the solar panel to deliver more energy may not be enough as you would have to also consider changing other accessories along with it such as batteries, etc. in order to be able to store what is being generated and the entire lighting unit itself may have to be changed too.

In physics, the Shockley–Queisser limit (published in 1961) refers to the maximum theoretical efficiency of a solar cell. Actually, the Wikipedia pagesays it all, as well as this Solar Central article. There are some standard assumptions (how strong is solar radiation etc.). For ideal solar cells, the maximum theoretical efficiency is circa 34% when those assumptions apply. That's because only some photons have the right wavelength to free an electron. Shorter photons dissipate the excess energy and heat the material and longer photons just pass through the "trap". It means that from solar energy of 1000 W/m2 only less than 340 W/m2 converts into electricity. The rest 67% turns into heat, or the photons pass through without conversion. In real cells, there are also some losses, because some light is reflected from the cell and some energy is lost due to resistance on contacts or due to impurities. In real solar panels is the best efficiency a bit above 20 % - not even close to the theoretical 34 %. Well, but there are some solar cells with much higher efficiency, so how can it be? They use some workarounds! For example, you can stack another cell behind the first one and catch part of the photons that pass through the first layer. This is called tandem-cell. Every layer can be made from different semiconductor material, tuned for the best wavelength. This can improve the efficiency of practical solar cells well above 40%. Another interesting technique is concentration of the solar radiation. More light makes more energy. And there are more tricks in the hat. You can guess that those special techniques have high cost and for the near future it won't give us more power from the same square meter of solar panel.

Definition of solar panel: Solar panel is a device that absorbs sunlight and directly or indirectly converts solar radiation energy into electricity through the photoelectric effect or photochemical effect. The main material of most solar panels is "silicon", but due to the relatively low production cost It is so big that it has some limitations in its universal use. Compared to ordinary batteries and rechargeable batteries, solar cells are more energy-efficient and environmentally friendly green products. The classification of solar panels: The solar cells currently on the market are divided into amorphous silicon and crystalline silicon. Among them, crystalline silicon can be divided into polycrystalline silicon and single crystal silicon. From the perspective of the photoelectric conversion efficiency of the two materials: single crystal silicon sunpower (up to 22%)> polycrystalline silicon (18%). Selection method of solar panel: 1. When we purchase solar panels, the focus is on the power of solar cells. Generally speaking, the power of solar panels is directly proportional to the area of solar wafers. The area of a solar cell wafer is not exactly the same as the area of a solar encapsulation panel, because although some solar cell panels are large, the gap between a single solar wafer arrangement is wide, and the power of such solar cell panels is not necessarily high. 2. Generally speaking, is the power of the solar cell panel greater the better? In this way, the electric current generated in the sun is large, and the built-in battery can be quickly filled. But in reality, you need to find a balance between the power of solar panels and the portability of solar chargers. Solar panel selection tips: With the extensive use of various solar products, the use of solar panels in our lives is becoming more and more widespread. But in the face of various types of solar panels in the market, how do we choose? Now let's learn the selection of solar panels. 1. Selection of battery capacity of solar panel Because the input energy of the solar panel photovoltaic power generation system is extremely unstable, it generally needs to be equipped with a battery system to work, and solar lamps are no exception, and must be equipped with a battery to work. Their capacity choice directly affects system reliability and system price. The selection of battery capacity should generally follow the following principles: firstly, the energy of the solar cell module during the day can be stored as much as possible under the premise of meeting the night lighting, and the electric energy that can meet the lighting requirements at night in continuous rainy days should be stored. The battery capacity is too small to meet the needs of night lighting, and the battery capacity is too large. On the one hand, the battery is always in a state of power loss, which affects the battery life and causes waste. 2, the choice of solar panel power The output power of the solar cell is the output power of the solar cell under standard solar light conditions, that is, according to international standards, radiation intensity 1000W / m2, atmospheric quality AM1.5, and temperature 25 ° C.

The use of solar panels reduces the use of fossil fuels. Solar panels now provide cheaper energy in most sunny places, before gov breaks. Solar panels are nearly all silicon based, they are made mostly of glass and aluminum that is easily recycled and cuts the cost and energy needed to make the panels in half. Only about 3% of the panels is the solar cell themselves, and they are recycled or refurbished. Solar panels thus need 1000`s of times less mined materials than fossils. The materials needed are common all over the world: silicon and aluminum. The mining for silicon and aluminum is far less environmentally damaging than fossils extraction. No wars will be needed for fuels, since solar is freely distributed and will be around for a billion years.