A solar light is a system of parts that work in harmony to generate power from solar exposure, store power, and re-use that power in an efficient manner to light a general or specific area. There are many variations to how the parts are configured in order to achieve the best result for its intended environment, but the overall structure is always there. In this article, let’s take a look at the solar light system components.
Solar Light System Components Broken Down
Panel
Every solar light ships with a full assembly of mounting hardware and angling brackets to ensure that the solar panel will be sturdy and properly angled to capture as much solar energy as possible. There must be a balance between material strength and weight since the panel will be sitting in a vulnerable position for years, facing weather fluctuations and wind.
Fixture
The fixture is what houses a light. With solar LED lighting, fixtures come in arrays of several LED fixtures embedded into a full array. Quality fixtures are wired in a parallel configuration instead of series. Check your manufacturer documentation to learn about the wiring of your fixture.
LEDs have expanded the range of available fixtures. The most widely used fixture is a cobra head fixture, but since solar LED lighting is used in parks, some fixtures are more aesthetically pleasing.
Energy Management System
This controls the power between the light fixture, panel, and battery. Often the brains of the system, it can control the light output of the fixture and maintain battery health.
Pole
Quality poles are shipped with felt to prevent damage in transit. Solar light poles vary in height and material build in order to last—50 years is a common pole lifespan.
Battery
A battery comes with the proper wiring, battery box, and mounting materials. You can also opt to bury the battery underground to avoid cold temperatures. This step is typically done before the concrete pedestal is poured and cured.
Miscellaneous Parts
This varies among manufacturers, but often times you’ll find wire harnesses, fixture arms, mounting brackets, and extra materials.
Be aware that manufacturers will sometimes source sub-par solar light parts from suppliers that don’t include specification packages. For instance, if you want to know the performance of the LED fixture of a given solar lighting system, be sure to check for standardized documents known as LM-79, LM-80, and TM-21. These documents list measurements of properties for LED products such as efficiency, chromaticity, operations under certain temperatures, and bulb lifespan. If your manufacturer doesn’t provide these documents with the LED fixture, that’s a telltale sign of a poor product.
Always be sure to check proper documentation to confirm what your products are made of. One faulty part in an entire system can turn your solar light investment into decoration. For instance, if one LED in a series fixture malfunctions, the entire light fixture is unusable.
One of the most important processes of selecting a solar light is called sizing. With all these components functioning together as one self-sufficient system, improperly sized lights will still function well, but not all of the time. It’s important that every component complement each other so all parts work together in unison.
Be wary of manufacturers that size their systems as “one size fits all.” Typically, this type of manufacturer cheapens the customer experience through reduced time and effort by pre-sizing a light they believe fits all situations. Unfortunately, pre-sized lights only perform best in the most perfect of situations. That’s why it’s important for lighting engineers to evaluate the area in question first in order to design a system that will perform optimally.
