Best solar street light | Split, AIO, AIT or Hybrid - ZGSM

What’s solar street light?

Solar street light is a kind of street light system that uses solar energy as energy source. It is mainly composed of solar panels, controllers, batteries and LED street lamps. During the daytime, the solar panel converts the sunlight energy into electricity and stores it in the battery; at night, the electricity in the battery is supplied to the LED lamps and lanterns through the controller for lighting. This kind of street light system has the characteristics of environmental protection, energy saving, safety, economy and so on, which is the ideal choice for city lighting and road lighting. Solar panels, controllers, batteries and LED lights have a variety of combinations, and different combinations can form different types of solar street lights ( different types of street lights ), such as conventional solar street lights, integrated solar street lights and split solar street lights. In addition, whether or not to connect to the utility or other charging methods will also lead to different types of solar street lights, such as AC/DC hybrid and Solar-Wind hybrid street lights. Go and check to see which one is best solar street light suits for your project.

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Why go with solar street light?

ZGSM believes that there are two main reasons for choosing solar street lights, one is the limitation of power supply in the region, and the other is the energy-saving characteristics of solar energy. Of course, it also has other advantages ( What’s the advantages and disadvantages of solar energy? ), such as safety and reliability, small impact on the environment, etc., as follows, we expand one by one to explain.

Limitation of power supply

In some remote areas, mountainous regions or rural areas, there are often difficulties in power supply. These areas are not suitable for the application of AC street light due to the remote location or imperfect infrastructure, which is difficult to be covered by the traditional power grid (or unstable power supply or no power supply at all). If solar energy is abundant in these areas, solar streetlights can rely on solar power to generate electricity and provide streetlights for use at night, which not only solves the problem of power supply, but also provides stable and reliable lighting in these areas ( Find more about solar street lighting application in these areas ).

Energy saving and environmentally friendly

Solar street lights do not rely on the grid for power supply, avoiding the problem of lighting interruption due to power outages or grid failures. The risk of electrocution from solar streetlights is much lower than that from traditional streetlights using AC power, as solar streetlights use low-voltage DC power supply. Its use of low-voltage DC power supply reduces the risk of fire due to short circuit or overload. At the same time, the charging and discharging control system of solar street lamps is usually equipped with protection functions such as over-charging, over-discharging and short-circuiting, which further improves safety.

Safe and reliable

Solar street lights do not rely on grid power, avoiding the problem of lighting interruptions caused by power outages or grid failures. Solar street light adopts low-voltage DC power supply, the risk of electrocution of solar street light is much lower than that of traditional street light using AC power. Its use of low-voltage DC power supply reduces the risk of fire due to short-circuiting or overloading. At the same time, the charging and discharging control system of solar street lights are usually equipped with protection functions such as over-charging, over-discharging and short-circuiting, which further improves safety.

Convenient Installation

The installation of solar street lights is relatively simple and quick, without the need to lay complex cables and pipelines, reducing construction difficulties and costs. The installation of one-body and two-body lamps is more flexible and can meet many application scenarios, including city streets, rural roads, remote mountain roads, car parks and squares and so on.

Different solar street lights

Standard solar street light

Advantages Disadvantages Solar panel capacity and battery capacity can be customized Relatively high price With higher wattage to meet project requirement Installation is complicated Installation direction of solar panel can be adjusted Wire connection is complicated

All in one solar street light

Advantages Disadvantages Easy to install Solar panel capacity is relatively small which is not suitable for insufficient sunshine area Wide applications such as urban roads, rural roads, squares, parks, villa areas Battery capacity is relatively small which is not suitable for area with long rainy days Easy for transportation (ZGSM has a complete set of certificates) High installation requirements (solar panel direction)

All in two solar street light

Hybrid solar street light

In addition to integrated, all in two and traditional solar street lights, hybrid solar street lights are also a major category. The hybrid solar street light that combines solar energy and wind energy combines solar panels and wind turbines to provide energy for street lights. On sunny days, solar panels can store electricity in batteries; and during strong winds, wind turbines can provide additional power. In addition to the hybrid solar and wind energy, there is also a hybrid solar street light that combines solar energy and city electricity. This type of solar street light can use the city electricity to power the LED light source ( What's the advantages of LED light source? ) to ensure the continuity of road lighting when there is insufficient solar energy. The advantages overcome the application limitations of solar street lights, and the disadvantages are complex wiring and high costs.

ZGSM solar street light solutions

Summary

This article mainly introduces the basic concept of solar street light and its main types. According to the combination of the main components of solar street lights, solar street lights can be divided into traditional solar street lights, integrated solar street lights, split (including semi intergrated) solar street lights and hybrid solar street lights. These different types of solar street lights have their own advantages and disadvantages, users can choose the best solar street lights according to their own actual needs. ZGSM solar street lights ( ZGSM also offer AC street light, please check accordingly ) as a high-quality brand, provides a variety of the above types of solar street lights for customers to choose. All of its products use high-efficiency solar panels and long-life batteries, which are very suitable for the lighting needs of city roads, parks, squares and other public places. If you need solar street lights for your project, now is the time to contact us for professional advice and customised solutions to find the best solar street light for your project.

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Introduction

Street lighting is not one size fits all – from highways and expressways to local roads, alleys, crosswalks and even bike lanes, different types of roads have very different lighting requirements. But no matter the scenario, these types of streets need proper lighting to ensure the safety of those who use them. Solar LED street lights and AC street lights are the two main options. This article will focus on the main advantages of solar LED street lights in road lighting, and how to correctly choose the right solar LED street lights (check to find more ZGSM solar street lights) for your project. This requires you to understand the lighting and requirements of different types of streets, and how solar lighting can meet the lighting requirements of the corresponding roads. At the same time, we will also focus on the scientific configuration method of solar street light wattage and battery capacity.

Why go with solar LED street light?

Street lights can achieve fast, accurate and comfortable visibility at night, which is helpful in reducing nighttime traffic accidents, improving traffic flow, and promoting nighttime commercial activities and the use of public facilities. In recent years, the demand for street lights in the city has mainly shifted to solar LED street lights. ZGSM believes that the reason why solar LED street lights are widely used is precisely because of these three core advantages – efficient lighting, convenient installation, energy saving and environmental protection.

Solar street lights now mostly use LED as the light source, which is usually equipped with 220lm/W and higher LED chips, so the overall light efficiency can currently be close to 200lm/W. This allows solar LED street lights to illuminate the road with lower wattage. With reasonable light distribution (What’s light distribution?), we can achieve 50W or even lower wattage to achieve M2 lighting class for main road lighting. These characteristics make the application of solar LED street lights more extensive.

The installation of solar LED street lights does not rely on traditional power grids, so the installation of solar street lights saves the need for cable trench excavation, distribution cabinet installation and transformer installation, etc. This makes solar LED street lights have great potential for application in rural areas, mountainous areas, grasslands and islands with imperfect infrastructure. In addition, its installation cost can also be greatly reduced.

Solar street lights absorb solar energy through panels and store electricity in batteries through controllers, and power LED light sources at night, which makes solar LED street lights independent of traditional fossil fuels. Taking a 50W solar street light as an example, it can reduce 150kg CO₂ emissions per year (PS: Taking thermal power as an example, 1KWH of power generation has a carbon emission of 0.7KG). Such a huge reduction in emissions is of great significance to the protection of today’s increasingly deteriorating natural environment. The figure below shows the basic composition and working principle of solar energy.

Lighting requirement for your roadway lighting

Roads can be divided into different types according to their functions and design standards. Expressways are long-distance, high-speed inter-city or cross-regional traffic arteries. They are fully enclosed (no intersections) and have high speed limits (for example, 100-120 km/h in China). Expressways are fast passages within cities or suburbs. They are usually fully enclosed roads (or only a few intersections) and have high speed limits, usually 80-100 km/h. Urban main roads are the main traffic arteries in the city, connecting the centers of various regions. These roads are usually 4-8 lanes in two directions, with isolation islands in the middle, and speed limits of 60-80 km/h; secondary main roads assist trunk roads in diverting traffic, connecting residential areas, commercial areas, industrial areas and public service areas; branch roads are used for short-distance travel within residential/commercial areas, usually 2-3 lanes in two directions, and speed limits are usually 40 km/h; rural roads connect villages, houses and farmland, with relatively few vehicles, and speed limits are usually 30 km/h. These roads together form a complex transportation network between cities, between cities and rural areas, and within cities/rural areas.

Different roads have been introduced, so are the lighting requirements for different types of roads fixed? Normally, if the speed limit is fixed, the traffic volume, traffic composition, intersection density, the presence of parked vehicles and the ambient brightness are the same, the lighting requirements for the same road type are fixed. However, when there are different parameters, the lighting standards will also be different. For example, on both main city roads with speed limits of 80km/h and 60km/h, the lighting requirements for the former are higher than those for the latter, because the speed is faster and better lighting is needed to help the driver see the road conditions clearly. For example, for urban branch roads, the lighting requirements for roads where parking is allowed are higher than those for roads where parking is not allowed, because vehicles parked next to them will interfere with the driver’s ability to see the road conditions clearly, so better lighting is needed to reduce driving risks. So is there any way to help municipal departments determine lighting standards? The answer is yes, and EN-1(More details about EN for street lighting design) provides a clear method.

The lighting standards involved in motor vehicle road lighting include brightness level (luminance) and uniformity, illumination level around the road and residual glare limit. If the project has clear requirements for these, the lighting design (lighting simulation) can be carried out according to these requirements. If there are no requirements, it can be selected by referring to the standard EN-1. At this time, the parameters we consider include: speed, traffic volume, traffic composition, lane separation, intersection density, parked vehicles, ambient brightness, difficulty of navigation task/visual guidance/traffic control. For example, for a road with a design speed of 80km/h, the weight value is 1. If traffic volume is high, then the weight value is 1. If the carriageway isn’t separated(without median island), then the weight value is 1. And the junction density is <3/km, then this weight value is 0. The road is without parked vehicles, then this weight value is 1. And for other weight value we supposed that they are all 0.

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