A solar carport steel structure is a self-supporting steel framework that shelters vehicles while carrying a photovoltaic array overhead, turning an otherwise idle parking area into a power-generating asset. Because a steel frame carries a heavy PV and wind load at only a fraction of a concrete structure's weight, the dead load is cut by 30–50% and the reinforced member base is slimmer, letting large clear spans of 10–15 m open up 4–6 column-free parking bays per row.
Engineered from Q355B/Q235B (equivalent to S355JR and ASTM A572 Gr.50) and finished with hot-dip galvanizing to ISO 1461 or ZAM coating for harsh outdoor service, our carports are rated for wind speeds up to 180 km/h and snow loads to 2.5 kN/m², with a 25–30 year designed service life. Delivered as a 100% prefabricated, fully bolted kit with no on-site welding and precision-mechanically-dimensioned connections, each structure is supplied with a complete material certificate and quoting within 24 hours.
Types of Our Solar Carport Steel Structure
As a structural steel manufacturer, we provide durable frameworks for solar carport projects. Our systems are engineered to support PV modules while providing long-term vehicle protection. Drawing on our experience in heavy steel processing, we supply two primary structural configurations designed for stability and efficient site integration.
Single-Wing Cantilever Solar Carport Steel Structure
Features：Features a single-sided column with a cantilevered H-beam, utilizing a reinforced base to manage one-sided structural loads in a sleek L-type profile.
Advantages：Provides an unobstructed parking space with no front pillars, maximizing vehicle maneuverability, safety, and parking convenience.
Applications：Ideal for perimeter rows, wall-side parking, or premium commercial sites requiring a modern, high-end architectural look.
Double-Wing / T-Type Solar Carport Steel Structure
Features：Utilizes a central column with symmetrical T-type beams, leveraging gravitational balance to minimize structural stress and ensure maximum stability.
Advantages：A high ROI solution that covers two rows with a single pillar, significantly reducing material consumption and overall construction costs per watt.
Applications：Best suited for large industrial parks, schools, and utility lots with extensive back-to-back double parking layouts.
Whether your project requires a flexible single-wing design or a high-efficiency double-wing system, our expert engineering team provides fully customized solutions. We go beyond standard products by conducting precise structural simulations based on your site-specific wind speeds, snow loads, and terrain conditions. From detailed CAD/Tekla modeling to high-quality hot-dip galvanization, we ensure every framework delivers maximum safety and long-term durability.
⚖️ Unsure about single-wing or T-type? Share your bay count for the best-cost option!
Specification of PV Solar Carport Steel Structure
| Item | Description |
| Structure Type | Single-Wing Cantilever / Double-Wing Cantilever |
| Primary Material | High-Strength Structural Steel Q355B / Q235B |
| International Standards | Equivalent to S355JR (EN10025) / ASTM A572 Gr.50 |
| Surface Treatment | Hot-Dip Galvanized per ISO 1461 (Min. average thickness 85 μm) |
| Optional Coating | Duplex System: Galvanized + Powder Coating / Fluorocarbon Coating |
| Wind Load Capacity | Up to 0.6 - 1.0 kN/m² (Customizable up to 180 km/h) |
| Snow Load Capacity | Up to 0.5 - 2.5 kN/m² (Customizable per project site) |
| Seismic Resistance | Magnitude 8.0 or per local seismic zone requirements |
| Fastener System | Grade 8.8 / 10.9 High-Strength Hot-Dip Galvanized Bolts & Nuts |
| Purlin/Rail System | Cold-formed C / Z / U-shaped Purlins with high-zinc coating |
| Installation Method | 100% Prefabricated; Fully Bolted Connection (No on-site welding) |
| Design Service Life | 25 - 30 Years with minimum maintenance |
| Certification | CE, ISO 9001, AWS/EN Welding Certificates |
❄️ Fearing local hurricanes or heavy snow? Contact us for custom load-bearing designs!
Key Advantages of Photovoltaic Carport Steel Structure
High Strength-to-Weight Ratio & Structural Stability
Engineered with premium structural steel featuring a tensile strength of 490-630 MPa, the structural dead load is reduced by 30%-50% compared to traditional concrete. It reliably supports a solar module load of up to 25 kg/m² and safely withstands Beaufort scale 10-12 strong winds and extreme snowstorms.
01
Large Span & High Space Efficiency
Benefiting from the low self-weight and high load-bearing capacity of structural steel, the carport easily achieves a large clear span design of 10-15 meters. This enables a column-free clearance for 4-6 parking spaces per bay, boosting overall space utilization by 10%-15%, ensuring smoother two-way traffic, and completely eliminating the risk of drivers bumping into columns when reversing.
02
Excellent Seismic Performance & Material Ductility
The steel exhibits exceptional elasto-plastic properties with an elongation rate generally exceeding 20%, fully satisfying the design requirements for Seismic Fortification Intensity 7-8. In the event of sudden external forces, it efficiently dissipates seismic energy through plastic deformation, successfully preventing brittle fracture or catastrophic collapse of the entire structure.
03
Prefabricated Construction & Short Timeline
With an off-site prefabrication rate exceeding 90% at the factory, the structure relies entirely on high-strength bolted connections for on-site assembly. This approach compresses the overall construction schedule by 40%-60%, directly reducing on-site labor costs by approximately 20% for project owners.
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Typical Applications of PV Carport Steel Structure
Commercial Complexes & Retail Centers: Shopping malls, supermarkets, and big-box retailers.
Industrial Parks & Manufacturing Facilities: Factory parking lots, logistics hubs, and warehouses.
Public Infrastructure & Institutional Facilities: Schools, universities, hospitals, and government office buildings.
EV Charging Hubs: Highway rest stops, dedicated EV charging plazas, and fleet charging for electric buses or delivery vans.
Airports & Major Transit Hubs: Long-term airport parking, train station parking, and multi-level parking deck rooftops.
Main Components of Our Solar Carport Steel Structure
We provide engineered solar carport systems, not just steel components. Every core part-from columns to fasteners-is precision-fabricated in-house to ensure structural safety in extreme weather. With premium anti-corrosion treatments, we guarantee a 25–30 year maintenance-free lifecycle. Below is the main components of our solar carport steel structure:
1. Cantilever Beam
This is the core component-the horizontal arm extending from the column to support the canopy. It must withstand the full weight of solar modules, wind loads, and snow loads concentrated on one side.
Note: Beam dimensions and thickness dictate the span, cost, and code compliance. Built from high-strength prefabricated structural steel sections, our beams ensure maximum span stability and meet international standards.
2. Columns
Columns are typically positioned on one side of each parking bay to transfer all vertical and lateral loads to the foundation.
Note: Fewer columns speed up installation but demand higher load capacity per column. Steel grade and section profile are critical.
3. Base Plates & Anchor Bolts
These components anchor the columns to the foundation, transferring shear and uplift forces.
Note: A compromised connection here hazards the entire structure. Proper sizing is critical, particularly in high-wind zones.
4. Foundations
The foundation supports the entire system and must match local soil conditions and design loads.
Note: Foundation type dictates cost, schedule, and equipment needs. Over-designing wastes budget; under-designing hazards safety. Standardized or tailored designs optimize soil profiles and loads, accelerating site installation and minimizing civil works.
5. Purlins & Rafters
These horizontal members span across the main beams to support and secure the solar panels in place.
Note: They dictate panel orientation, tilt angle, and installation efficiency. Available in either aluminum or steel profiles.
Optional Functional Add-ons of Our Solar Carport Steel Structure
We offer integrated add-ons engineered specifically for our steel frameworks. These options enhance functionality-including waterproofing and cable management-while maintaining structural integrity. Our accessories transform a basic carport into a high-performance energy hub.
Integrated Waterproofing & Gutter System
We provide custom-designed water-guiding channels and downspouts that integrate seamlessly with the steel rafters.This system ensures 100% structural waterproofing, protecting vehicles from rain and snow, making it ideal for BIPV (Building Integrated Photovoltaic) projects.
Concealed Cable Management
To protect wiring from UV aging and environmental damage, we offer integrated cable trays and internal pillar channels.This ensures a clean, professional appearance while significantly reducing long-term maintenance costs for the electrical system.
EV Charger Mounting Solutions
We offer pre-engineered mounting brackets and reinforced interfaces specifically designed for EV charging stations. These allow for the seamless installation of various charger types directly onto the steel columns, future-proofing your parking infrastructure.
LED Lighting & Security Mounts
Our structures can be equipped with pre-drilled mounts for high-efficiency LED lighting and CCTV surveillance systems. We ensure all attachments are structurally sound and do not compromise the integrity or anti-corrosion coating of the main frame.
💧 Suffering from leaky canopies or messy wiring? Request a quote for waterproof systems now!
Our Custom Engineering Services
We understand that every parking site is unique. Beyond standard products, we provide end-to-end customized services to ensure your solar carport is perfectly adapted to its environment and functional requirements.
Site-Specific Structural Engineering
We conduct precise mechanical simulations based on your local wind speed, snow load, and seismic data to optimize steel thickness and joint design.
Flexible Configurations & Dimensions
From tilt angles and clearance heights to specific column spans, we customize every dimension to fit your specific PV module layout and vehicle types.
Advanced Coating & Material Options
Choose from Hot-Dip Galvanizing, powder coating, or Zinc-Aluminum-Magnesium (ZAM) finishes to match the corrosive environment of your site (C3-C5).
Prefabricated "Ready-to-Assemble" Kits
Every custom project is 100% factory-prefabricated and pre-drilled, ensuring a precise bolt-on assembly on-site with zero welding required.
Packing & Delivery of Solar Carport Steel Structure
| Item | Detail |
|---|---|
| Packing | Knock-down bundles: columns, beams, purlins, base plates, bolts and accessories strapped with timber/steel spacers and edge protectors; no welding on site. |
| Transport | Containerised or standard 40ft; components sized to container/lorry dimensions; pre-drilled kit ships ready to assemble. |
| Marking | Piece marks stencilled per shop drawing for rapid matching on site. |
| Docs shipped | Packing list, invoice, MTC, galvanizing/coating certificates, erection drawings. |
🚢 Fear maritime rust scratches or slow unloading? Inquire about our 3D loading plans!
FAQ:
What is a steel structure solar carport?
A steel structure solar carport is a parking canopy system that uses a steel frame to support photovoltaic panels, providing vehicle protection while generating renewable energy.
Is hot-dip galvanizing necessary for solar carports?
Yes. Solar carports are fully exposed to outdoor conditions, and galvanizing significantly extends structural service life.
Can steel solar carports be expanded later?
Yes. Modular steel structures allow easy expansion by adding additional bays or extending rows with minimal disruption.
How to choose between carbon steel structure and aluminum carport? What overseas scenarios fit each solution?
1.Hot-dip galvanized carbon steel: higher bearing capacity, cost-effective for long span, suitable for inland industrial parks, large commercial parking lots and heavy snow/wind areas.
2.Aluminum alloy: lightweight, no galvanization needed, easy for transportation, fit for small parking bays, high-salt islands and European & American regions with expensive installation labor. We provide material economic comparison plans based on project budget, corrosion grade and wind-snow load.
Can the steel frame be customized for irregular parking spaces, slope ground?
Customize steel beam length, column spacing and height support according to site drawing, adjust frame shape to match actual parking layout.
Are all components prefabricated in factory with only bolt assembly on site without hot welding?
All main beams, columns and purlins are precisely pre-drilled and fully fabricated in factory. No welding or cutting is needed on site with fast modular assembly to minimize overseas labor hours.
