Solar Street Lights vs traditionella Street Lights
More solar lighting is being installed around the world and is slowly taking over as the way to illuminate the streets at night, but what are their differences? Why are solar lighting systems used now instead of taking in the electricity and using traditional street lighting? Here are some differences and reasons why these solar lights are becoming so popular.
Solar street lighting does not pose a threat to the environment and its people. No fire can be ignited due to lack of electrical wiring. In addition, accidents such as strangulation, overheating and electric shock will never occur as well. They emit a lower amount of carbon footprint than traditional lamps; thus making them environmentally friendly.
On the contrary, traditional lamps only generate lighting from electricity that interferes with any occurrence of mains faults. The main advantage of solar lighting is that it uses renewable energy from the sun, while traditional lamps depend on electricity generated from non-renewable fossil fuels and limited by power outages.
Lifetime cost If we only take into account the purchase price, the initial investment in solar LED street lighting is usually twice as high as traditional street lighting. But over the eight-year period, traditional street lighting installation, maintenance and electricity costs per unit range from $ 7,000-10,000, while solar-powered street-powered LED lights / poles cost an estimated $ 3,500-5,000 over the same time period.
For new installations in remote locations, traditional street lighting requires wiring and underground excavation to connect to power lines, which creates huge additional costs, while solar-powered LED street lighting is much easier to install. You just need to build concrete foundations and install a sun pole. In total, a solar pole lasts for one hour of installation. To give you an example of installation and labor costs for traditional street lighting, a foot of cabling and trenching costs between $ 25 and $ 50. Depending on the location of the transformer, you will need at least 30 feet of wiring and trenching for your project. These operations create extra costs but it is also very time consuming which can postpone your project and create other problems.
Maintenance costs are one of the ongoing problems that facility and city managers face when working with street lighting. The sodium lamps have a lifespan of 5 years while the lifespan of the LED light is more than 10 years. In addition, with the introduction of new “smart” technologies that enable remote control and control from a central location, the maintenance costs of LED street lighting are almost 70% lower compared to traditional sodium or metal halide lamps.
Solar-powered LED street lighting / poles need to be replaced every 5-7 years depending on the type of battery (VRLA or LiFePO4) and of course the battery manufacturer.
Efficiency and luminance
In terms of visibility, solar-powered lamps simulate near sunlight because they have built-in LEDs. These LEDs allow you to change the CRI or color rendering index to the color you want. This improves visibility at night.
On the other hand, traditional street lighting usually has metal halide lamps inside. These high-intensity discharge lamps offer most of their light from the arc inside a compact radiation tube. Unfortunately, these can not beat the visibility that solar powered lights can give you. Solar lamps use LEDs or LEDs that surpass CFL or compact fluorescent lamps to utilize more energy and produce brighter light.
Metal halide and high pressure sodium lamps give a much lower CRI (color rendering index) and do not provide the type of illumination that our eyes need to distinguish colors. The light tends to be more yellow and difficult to see with. Metal halide lamps give a standard CRI of 60 and high pressure sodium lamps have a CRI of 25. The sun has a CRI of 100 which is the reason why we can see shapes and colors so well during the day.
Street lighting with LED luminaires and solar energy has a standard CRI of 66, but LED lights can be colored to match almost any CRI. Tachyonlight LED lamps can reach high CRI even to 95. They provide better visibility at night by being closest to sunlight from a high-efficiency lamp. The LED lights can also be task-specific directed with several available distribution patterns. This enables less light pollution in surrounding areas and increased efficiency where light is needed.
Traditional lamps last for about 5,000 to 8,000 hours or less than a year of use while solar LED lamps can live for 5 to 7 years. This view always puts solar powered lamps in front of the conventional lamps.
The above comparison is enough to indicate which of the two types of street lighting is better – it is solar lighting all the way! Most modern solar headlights are integrated with LED lights. The explosively useful combination of LEDs and street lights contains the benefits of both today’s leading technology – namely solar energy and LEDs. Today, lamps with smart technology are in demand. There is no doubt that they can provide more than what users need. Solar street lighting also encourages activities such as walking, biking, walking to parks, etc.