The XSY-SLT series (10W, 15W, 30W, 40W) is an all-in-one solar LED street lighting solution that incorporates the LED light engine, photovoltaic panel and long life lithium-ion battery into a single ultra-thin block that facilitates shipping, installation, and maintenance. The compact, integrated fixture delivers sustainable lighting for locations where no electricity grid or lighting infrastructure is accessible. Available in 10W, 15W, 30W, and 40W based on the pole height/installing conditions, the LED light engine yields an industry-leading efficacy of 160 lumens per watt, offering maximized energy harvest from the solar panel. UV resistant, impact resistant optics are sealed to the LED assembly to shape the light output, maximizing efficiency and application spacing. The aluminum housing delivers outstanding thermal management in a low profile footprint design. The monocrystalline-silicon panel features a conversion efficiency as high as 17%. The high capacity lithium-ion batteries are optimized for repeated cyclic operations. A charge controller protects the battery from over charging, overload and deep discharge. With a dusk-to-dawn automatic lighting controller and PIR motion sensor, intelligent operating profiles can be programmed for maximum energy efficiency and up to 5 days of energy reserve. The completely self-contained luminaire offers IP66 weather protection.