Purchasing a solar lighting system for any application can be a daunting task. There are so many options and decisions to make that you can easily get lost in the specifications. There are three simple steps you can take to ensure that you at least have good results with your system, no matter what the application.
Use LED fixtures that provide a high Lumen per Watt output. This information can be found on any specification sheet, and if it is not right there, ask for it. A high wattage LED fixture does not mean that it provides bright lighting; it all depends on the Lumens provided from the LEDs. Knowing the available Lumens per Watt for the LEDs can help you determine which fixture would provide the required light. Want to know more about the difference between Watts and Lumens, check out Wattage vs Lumens: Know the Difference for Better Lighting.
Make sure your solar power system provides enough power during the day and provides plenty of backup storage. Solar lighting systems should always be designed for worst case scenario since if you use more than you put in, the system will begin to fail. Sizing your system with summer or even yearly average sun will not ensure that your system will operate when the days are short and nights are long. Make sure your system always provides around 20% over for power generation and you have a minimum of five nights autonomy for those times of inclement weather. This will guarantee your system operates even when the weather is bad for days at a time.
Make sure to follow installation instructions carefully and provide shade free south facing site for installation. Reading the installation manual before starting the installation will allow you to decide if you have everything necessary and alert you to any special needs of your system. There can also be labels on the system itself pointing you as to what is needed. Finally, ensuring the system faces directly south and has no shade on the solar panel all day will make sure that the solar lighting system can stand up to the test of time. If there are trees nearby, make sure they are trimmed well.
Following these three simple steps will guarantee that your solar lighting system will provide the best result possible.