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Product Description
The Solar Ground Screw Pile Mounting System provides a non-concrete foundation solution for ground-mounted photovoltaic arrays, suitable for utility-scale solar farms, commercial PV installations, and distributed generation projects. The helical pile design eliminates concrete curing time and reduces site disturbance compared to traditional ballasted foundations. This system is engineered for EPC contractors, solar developers, and installation companies serving industrial clients and utility customers across global markets.
The system supports PV projects from 100kW commercial installations up to 100MW+ utility-scale solar farms. Single pile designs accommodate module loads from 2 to 6 panels per support, with double pole configurations available for high snow load regions. The modular component design enables standardized installation workflows across array layouts, with rail sections connecting to pile tops via standard bolt sets.
Screw piles are engineered for installation in sandy soils, loam, clay, and decomposed rock conditions with appropriate pile length selection. For frozen ground conditions, pre-drilling may be specified based on geotechnical reports. Slopes up to 15 degrees can be accommodated without additional site grading through adjustable pile top connections. The system is not recommended for solid bedrock without specialized drilling equipment.
Piles are manufactured from Q235 steel with hot-dip galvanized coating per ISO 1461, with wall thickness from 2.75mm to 4.0mm depending on load requirements. Standard diameters include 76mm, 89mm, and 114mm, with lengths from 800mm to 3000mm. Helix blade diameters range from 200mm to 350mm, configured based on soil bearing capacity calculations. The following tables represent original manufacturer specifications:
Item | Specification |
|---|---|
Warranty | 2 years, 25 Years Life Time |
Free Installation Service | NO |
Place of Origin | Jiangsu, China |
Brand Name | EFI |
Model Number | Any |
Application | Home, Commercial, Industrial, Solar Panel |
Solar Panel Type | Monocrystalline Silicon, Polycrystalline Silicon |
Battery Type | Lead-Acid |
Controller Type | MPPT |
Mounting Type | Ground Mounting, BIPV Mounting |
Load Power (W) | 10 / 20 / 30 / 50KW |
Output Voltage (V) | 110 / 120 / 220 / 230V |
Output Frequency | 50 / 60 Hz |
Work Time (h) | 8-10 Hours |
Certificate | CE, ISO9001 |
Pre-Sales Project Design | Yes |
Material | Aluminum 6063 and Stainless Steel |
Process | Roll Formed / Cutting |
Surface Treatment | Anodized, Powder Coating, Polished, etc. |
Wind Load | 150 KM/H |
Snow Load | 1.4 KN/m² |
Model Type | Frame |
Color | Natural |
Rails and clamps are fabricated from Aluminum 6063-T6 with anodized surface treatment for corrosion resistance. Module clamps are available in 30mm, 35mm, and 40mm heights to match standard framed PV module dimensions. All fasteners use Stainless Steel 304 material with anti-seize coating. Tilt angles are adjustable from 0-70 degrees based on project latitude and energy production optimization.
Structural design meets AS/NZS 1170.2, DIN 1055, JIS C 8955:2011/2017, and IBC 2009 standards. Design wind load is 60m/s with appropriate pile embedment depth, and snow load capacity is 1.4kN/m². Pull-out capacity ranges from 15kN to 50kN per pile depending on soil conditions and embedment depth.
Installation requires specialized hydraulic drive heads mounted on excavators or skid-steer loaders. Torque monitoring during installation provides verification of pile bearing capacity without additional load testing in most soil conditions. No excavation or concrete pouring is required, and installation can proceed immediately after pile driving. Rails and clamps are pre-assembled in factory where specified to reduce field labor.
Typical installation rates are 100-150 piles per day per crew with appropriate equipment. Compared to concrete foundations, screw pile installation reduces foundation timeline by 60-70% by eliminating concrete curing periods. Sites can be accessed for array installation immediately after pile driving, enabling parallel work streams for electrical and mechanical crews. Soil removal and site restoration costs are minimized compared to poured foundations.
Steel piles receive hot-dip galvanized coating with minimum 85μm thickness for underground corrosion protection. Aluminum components use 12μm anodized coating per AA-M12-C22-A-12 standard for above-ground exposure. Stainless steel fasteners prevent galvanic corrosion between dissimilar metals. For high-corrosion environments including coastal areas or acidic soils, additional coating options are available upon request.
All structural calculations are performed by registered professional engineers, with project-specific stamping available for regions requiring PE certification. Load testing reports and material certificates are provided with each production batch. Third-party testing is available for large projects requiring independent verification.
Pile length, diameter, and helix configuration can be customized based on project geotechnical reports. Rail profiles and clamp designs can be modified for specific module dimensions and layout requirements. Private label packaging and documentation are available for volume orders. Minimum order quantity is 100kW of system components, with flexible shipping options for full container loads.
Pre-sales support includes preliminary layout design and pile quantity estimation based on site drawings. Installation training is available for contractor crews, with on-site technical support for project kickoff on large installations. Production lead time is 20-25 working days for standard specifications, with expedited production available for urgent project timelines.
Soil bearing capacity values, soil classification, and groundwater level information are recommended for optimal pile specification. For utility projects, full geotechnical investigation with borehole data is preferred.
With proper equipment and experienced crews, 100-150 piles can be installed per day. Rail and module installation proceeds at 30-50kW per crew per day depending on array configuration.
Galvanized coating thickness is measured on all production pieces. For high-corrosion soils, additional corrosion testing can be performed, and extended warranty options are available.
Yes, screw piles can be unscrewed and removed with the same installation equipment, enabling site restoration or system relocation. This feature is particularly useful for brownfield sites and temporary power installations.
Installation torque values are calculated based on soil conditions and required pull-out capacity, typically ranging from 2000N·m to 8000N·m. Torque is recorded for each pile during installation for quality assurance documentation.
