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Solar LED Outdoor Lighting: A brief analysis of the considerations of design application and application examples

Nov 07, 2017

Over the past decade, we have seen that renewable energy technologies and practices are getting into our daily lives. It blends into our society, providing a small difference in daily life for automobiles, thermostats, and even lighting and control. On a larger scale, we see geothermal energy used in large buildings, rainwater harvesting and recycling, and even solar LED lighting that is not connected to the grid. In fact, the efficiency of the LED provides a new life for solar energy. Here, we will describe the benefits and challenges of implementation.

Solar Outdoor lighting has emerged from other technologies, not only to provide the necessary lighting for our daily lives, but also to remind facility users and other people to consider sustainability in the design of facilities. Solar outdoor lights can "communicate" when illuminated, delivering information about environmental management to relevant companies and organizations, builders, developers and lighting designers.

With advances in solar panels, batteries and LED technology, commercial solar outdoor lighting is now more reliable than grid-connected systems, and provides higher-quality lighting at lower cost. In fact, the cost of solar outdoor lighting benefits from the synergistic effects of technological innovation in three key areas:

• Solar panel cost decline: The Solar energy Industry Association (SEIA) points out that the cost of photovoltaic panels has fallen sharply in recent years, falling by 60% per cent since the beginning of 2011.

• Improvements in battery technology: the growth of hybrid and electric vehicle markets has improved battery technology, producing a compact, efficient, and long-lasting rechargeable battery.

LED efficiency increases: LED lighting efficiency is also increasing, which means that with less power it can produce more light or higher effects (higher lumens per watt), which is equivalent to the same cost of lighting output reduction.

As a result of these trends, commercial solar outdoor lighting is now more economical than grid-connected in many cases. These include the remote or non-existent power infrastructure, such as security and green space around the perimeter, or the reluctance to change existing roads or landscapes (e.g., car parks, roads, outdoor storage areas, park playgrounds and campuses). In these cases, the installation of solar LED lighting system can be realized immediately, can avoid the installation of new grid-connected lighting systems related to trenching, wiring and other costs. In addition, the use of solar LED lights, over 25 years of service life, there will be no electricity bill, can be in the next few 10 years to save costs.

However, for the selection of solar LED lighting for many companies and organizations, the cost savings are often ranked second, with green energy is more advantageous. Because commercial solar outdoor lights do not use fossil fuels and do not produce carbon dioxide emissions, they are fulfilling their commitment to protecting the environment and national energy security.

Many companies and organizations use commercial solar outdoor lighting to meet the sustainability goals identified in the Sustainability Infrastructure Research Institute (ISI) assessment system. Solar LED lamps can also be used to meet the sustainable development objectives of a particular building, to meet the "CSR" goals, or to get credits from the LEED program of the U.S. Green Building Board. Through the solar LED lighting, each lamp becomes the environmental responsibility small advertisement, this is the traditional marketing tool cannot realize, because it is in the action rather than the speech to express the pledge.

Design a sustainable system

Although technical issues need to be addressed when considering commercial solar outdoor lighting systems, the design of the system is reduced to three aspects:

• How much light is needed?

• How much solar energy can be collected?

• When do I need illumination?


With regard to the first issue, many companies, organizations and governments are surprised by the clarity and quality of the high throughput led in solar outdoor lighting applications. In addition, the new LED technology can enhance control, greatly reduce the overflow and glare, and provide more efficient lighting distribution. For example, the traditional high-pressure sodium (HPS) lamp or metal halide lamp (MH), etc. directly in the light below the lamp to form a pattern, the LEDs can project light in a wider, more uniform pattern, creating uninterrupted light flow along the road, and allowing the maximum pole spacing, which lowers the cost.

With regard to the issue of "how much solar energy", the amount of solar energy is measured in terms of "equivalent sunshine hours". Solar panels The maximum (or 100%) sunlight received in an hour is equal to a complete sunshine. Although the sun may exceed the horizon 14 hours a day at a particular location, the amount of sunlight may be less than six hours a day due to the sun's angle and loss in the atmosphere. In order for the system to achieve the desired performance, the design needs to be based on the minimum available daylight time. For this reason, solar LED lamps are usually designed for each particular project. However, because commercial solar outdoor lighting usually has enough battery power to supply at least five nights of light, solar lighting systems can operate effectively in all daylight environments.

The final question is how to define how to control the lighting system. Unlike traditional commercial outdoor lighting, LEDs provide more flexibility in control. In addition to setting off/off time, LEDs also allow dimming, and when no one is present, use a motion sensor to turn off the light (or turn the light from light to dark).

These factors affect the size of solar panels, batteries, and lamps, and the number of Poles required to affect costs. Investing time to understand the specific needs of the locality and any applicable local decrees can significantly save on design costs. To ensure that you design a system that meets your expectations, it is best to seek advice from a lighting consultant or experienced solar lighting manufacturer.

It is wise to seek advice from a lighting consultant or experienced solar lighting manufacturer to ensure that you design a system that meets your expectations.

Use outdoor solar LED lighting in public space

Parks, trails and playgrounds are places where residents are willing to go because their designs are functional, aesthetically pleasing and safe. Solar Outdoor lighting provides greater security in the form of an attractive and easily installed system, while demonstrating innovative technologies to cut costs and environmental impacts. Next, you will be presented with projects that meet these criteria.

Sol, Inc. cooperates with the California Discovery Bay Discovery Bay Town to design and deploy solar LED lighting for the Cornell Park (Cornell Park). Residents choose solar energy rather than traditional grid-connected lighting because of environmental benefits and low upfront costs. Solar LED lights produce 0 of greenhouse gas emissions, costing less than half of the cost of grid-connected lights, especially infrastructure costs. Only the lighting device for the upfront installation cost savings of more than $80,000. In addition, the town will not have to pay electricity for the 25-year lifespan of the system.

The cost of running and maintaining is also low, as LED lamps can last up to 10-20 years, saving the cost of replacing bulbs for traditional commercial outdoor lighting and replacing the bulbs. Due to the positive effects in Cornell Park, Discovery Bay is exploring new community centres and using commercial solar outdoor lighting.

Create sustainable development on campus

Some universities have also become more environmentally friendly, using Low-carbon products and sustainable practices. By example, these institutions are choosing strategies to cut carbon footprints, raising awareness among students and alumni about environmental needs and providing materials for sustainability courses.

In particular, universities are increasingly using commercial solar outdoor lighting as a low-cost, sustainable solution to campus lighting needs. By implementing solar lighting, university administrators can reduce energy consumption and carbon emissions.


The Indian State College in Fort Pierce, Florida (Indian River Oblast College) occupies 87 acres, with more than 17,000 students, and in 2012 built a new brown innovation and Entrepreneurship Center. The academy requires its design to reflect two of the building's mission: To prepare students for careers in emerging technologies, especially in energy-related areas: and to accommodate start-ups in those industries that work to create jobs.

The brown Center, built according to LEED standards, has a number of green features, including a solar power station that generates one-third of electricity for the building. However, building into the doorway requires a cost-effective green lighting solution. To meet this need, the college uses the 20/20 solar LED lighting system of the company, enabling the Centre to maintain the green information inside and outside, and students to experience the real application of the energy technologies they are learning (Fig. 1).

Figure 1. The entrance to the Brown center of Indian State College provides a prominent sustainability message.

Although Sol donated the Brown Center's solar LED lighting system, most universities will buy solar lanterns as a cost-effective, pioneering and green product to replace traditional outdoor lighting.

Odessa College and City University of New Jersey

Texas's Odessa College (Odessa College) chose to install solar LED lighting, rather than traditional grid-connected lights, to ensure the safety of students and staff walking on campus (Fig. 2). With no wiring and trenching costs associated with installing traditional grid-connected lights, the Odessa Institute can save up to 20% of its upfront cost and $8000 a year in electricity costs.

Figure 2. With the use of solar energy, the Odessa Institute can save upfront installation costs by 20%.

The City University of New Jersey uses commercial solar outdoor lighting to help achieve sustainable development goals on campus (Fig. 3) on the terrace of its fresh student union. Another attractive place is that solar LED lights can continue to operate in inclement weather conditions such as hurricanes. For example, hurricanes have caused a large-scale blackout in the university. The ability to continue to glow is a big advantage in the event of blackouts or blackouts caused by a snowstorm or power grid failure.

Figure 3. The City University of New Jersey has installed solar LED lighting on the balcony of the student union building and expects the lighting to work in events such as hurricanes.

In the next few years, in many applications, commercial solar outdoor lighting in the economic alternative to grid-connected lighting technology trends will continue to accelerate, making solar more and more economical. We expect solar outdoor lighting to become a normal day, with high quality, clean renewable energy to illuminate the night.