GRID-FREE SOLAR LIGHTING
US-manufactured commercial solar lighting systems. Engineered with all-in-one Stealth™ LED optics, high-density LiFePO4 storage, and true 25-year design life. Zero trenching, zero grid dependence.
Trusted Across the Globe
Government agencies, utilities, and contractors rely on SLI.
Why a Manufacturer
The engineered
choice, not
a reseller’s guess.
When you specify SLI, you’re working directly with the engineering team that designed the fixture, not a middleman reading a catalog. Every system ships with documented load calculations, photometric data, and a direct line to the people who built it.
US-Manufactured
Designed and assembled in the USA. Buy America compliant for federal and DOT-funded projects. Full traceability from raw materials to shipped pole.
Zero Trenching Required
No utility connection, no trench permits, no electrical contractor markup. Install in any terrain (remote sites, hardscape areas, flood zones) in hours.
25-Year Design Life
LiFePO4 battery chemistry with 4,000+ deep-cycle capacity. Philips LED chips rated L70 at 100,000 hours. Built to outlast any reseller warranty by a decade.
Turnkey Global Delivery
From photometric design through manufacturing, logistics, and field support, SLI manages the full scope. Deployed in countries around the world.
Product Systems
Four system families.
One engineering standard.
Street Lighting
Stealth™ all-in-one fixtures from 6,600–22,200 lumens. IES Type II, III, and V distributions. Engineered for arterial roads, subdivisions, and municipal streetways.
Parking Lot Lighting
High-mast configurations up to 44,400 dual-head lumens. IES Type V symmetric distribution. Ideal for commercial lots, municipal garages, and transit facilities.
Pathway & Area Lighting
Compact Stealth™ fixtures optimized for pedestrian pathways, parks, campuses, and HOA common areas. Uniform IES Type IV distribution at lower mounting heights.
Traffic Safety Systems
Solar-powered RRFB crosswalks, school-zone beacons, railroad crossing alerts, and flood-warning systems. MUTCD-compliant, DOT-approvable out of the box.
Flagship Models
Three system configurations cover every commercial specification. All ship as complete pole packages: foundation anchor, wiring, and fixture included.
- PanelMonocrystalline
- BatteryLiFePO4
- AutonomyMulti-day autonomy
- Pole HeightConfigurable
- DistributionType II / III
- Wind RatingUp to 170 mph (hurricane poles avail.)
Ideal for: Residential streets, pathways, parking aisles
Request S-Series Quote- PanelMonocrystalline
- BatteryLiFePO4
- AutonomyMulti-day autonomy
- Pole HeightConfigurable
- DistributionType III / V
- Wind RatingUp to 170 mph (hurricane poles avail.)
Ideal for: Arterial roads, commercial lots, municipal streetways
Request M-Series Quote- PanelMonocrystalline
- BatteryLiFePO4
- AutonomyMulti-day autonomy
- Pole HeightConfigurable
- DistributionType V / Custom
- Wind RatingUp to 170 mph (hurricane poles avail.)
Ideal for: DOT highways, high-mast intersections, major commercial sites
Request X-Series Quotehours
Start Your Project
Request a
Spec Quote
Our engineering team responds promptly with a photometric design and preliminary system recommendation, at no charge.
Prefer to talk it through? Call +1 (803) 233-3461. We respond to every request within 24 hours.
Browse spec sheets & downloads →Who Specifies SLI
From a single crosswalk beacon to a statewide DOT contract, SLI’s systems meet the documentation requirements of every public-sector procurement workflow.
In the Field
Installed and operational on six continents.
Every SLI system ships as a complete pole package: foundation anchor, wiring harness, and fixture pre-assembled. A two-person crew installs a site in hours, not weeks.
Start Your Project- Photometric design included with every quote
- Load calculations and stamped drawings available
- No electrical permit required: no grid connection
- Foundation anchor ships with each pole
- Manufacturer fixture warranty, 25-year system design life
- Direct manufacturer support: no middlemen
Why Work With SLI
Industry-leading outdoor
solar lighting solutions.
Solar Lighting International is more than a commercial solar lights manufacturer. We create energy-efficient outdoor solar lighting solutions that actively solve problems for the project managers overseeing construction and property maintenance. Our team of sales and lighting-design engineers guides you through the selection process so your project is a success.
Industry Experience
With over 45 years of combined solar experience, SLI has the know-how to get the project done right, from photometric design through installed poles.
Quality Engineering
Our products are designed and engineered in the United States. Every complete solar street light and parking lot light pole system is Buy American Compliant, a symbol of high-quality total solar lighting solutions.
Global Sales & Support
With offices in South Carolina, El Salvador, Ecuador, Oman, Puerto Rico, and Suriname (plus a global network of lighting contractors), SLI delivers high-lumen commercial solar LED lighting and turnkey installations worldwide.