Delivering high-reliability, heavy-duty solar lighting solutions engineered for municipal infrastructure, highway projects, commercial developments, and international government contracts.
Founded in 2006, Solar Lighting International, Inc. (SLI) set out to build autonomous outdoor illumination systems designed specifically for demanding commercial, municipal, and industrial applications.
Headquartered in South Carolina, USA, SLI oversees rigorous system engineering, optical photometric planning, and strict manufacturing quality verification. From our original X-35 street lights to our flagship Stealth II integrated all-in-one and split solar lighting architectures, every system is built to withstand extreme temperatures, hurricane-force wind speeds up to 180 mph, and harsh coastal environments.
Our off-grid solar systems power arterial roadways, commercial parking lots, public parks, military bases, and remote industrial infrastructure across North America, South America, the Caribbean, the Middle East, and beyond.
Purpose-built for engineering contractors, project developers, municipal authorities, and commercial distributors requiring dependable off-grid illumination.
Our heavy-duty aluminum and hot-dip galvanized steel pole assemblies carry wind-load certifications up to 180 mph, offering corrosion-resistant long-term service in harsh marine or tropical climates.
Intelligent Maximum Power Point Tracking (MPPT) controllers boost energy harvesting by up to 30% over PWM systems, providing uninterrupted lighting even through multi-day overcast periods.
We deploy high-cycle Lithium Iron Phosphate (LiFePO4) storage engineered for 3,000+ cycles at 80% DOD, complete with built-in thermal protection for operating in high-heat deserts or cold environments.
Contact our engineering sales team to receive custom photometric reports, project pricing, or technical specifications for your upcoming commercial lighting project.