Solar Ground Screw

Solar ground screws manufactured by Egret Solar are common foundation components for ground mounting solar power stations. They consist mainly of a steel pipe, with several spiral blades welded onto the outer pipe wall. A flange plate or connection sleeve is fitted at the top. Using professional equipment, these screws are twisted deep into the ground just like driving a regular screw. Our ground screws go through hot dip galvanizing for corrosion protection, so they can deliver long term outdoor performance even under harsh weather conditions.

Parameters

	Brand Name	Egret Solar	Product name	Solar ground screw foundation
	Wind Load	60m/s(196.85ft/s)	Snow load	1.4KN/M²
	Surface Treatment	Hot Dip Galvanized	Material	Galvanized Steel
	Service Life	25 YRS	Color	Silver
	Installation Site	Ground mounting system	Specification	1200mm/1600mm/1800mm/2000mm/2500mm

Key Advantages

Solar power plants are usually built in open air outdoor locations. Due to terrain and weather conditions, strong winds are common here. Strong wind and snow resistance is the basic requirement for solar ground screws. During strong wind and rain storms, strong wind creates an upward pulling force that can lift the whole solar ground mounting system . The load bearing principle of solar ground screw foundations works like this: the top carries the weight, while the lower part of the screw transfers loads to surrounding soil through friction. It has high load bearing capacity to support solar mounting frames, PV modules, inverters and greenhouse steel structures, and delivers excellent typhoon resistance performance.

ground screw foundation for solar can connect with bases, solar supports, solar posts and other accessories. On site installation is simple with standardized connections. Exposed connection points make later inspection and maintenance easy. Once the screws are driven into the ground, upper structures can be installed right away. It cuts out the long curing time needed for traditional concrete pouring, greatly shortening the overall project installation cycle.

Difference vs. Concrete Pouring

In the past, concrete pouring was widely used. Workers needed to dig pits, clean the base, set up formwork, tie steel rebars and pour concrete. This whole process took 7-28 days to finish. Now foundation ground screws are ready made steel foundation parts. Once screwed into soil, their spiral blades interlock and create friction with the ground to bear loads. You only need to drive them into the ground, with no major damage to the surface. They can also be pulled out later, leaving farmland fully usable.

Application Scenarios

Ground Mount Solar Power Stations

Foundation building ground screws are most widely used for ground mount solar projects, including large scale utility scale solar farms, hilly sites, gobi deserts, grasslands and solar agriculture plants. They work perfectly on farmland. After project completion, the screws can be pulled out so the land can return to farming without damaging the original soil structure something concrete foundations cannot achieve.    

Residential Backyard Solar

For rural yards and small outdoor setups, ground screws can be connected directly to solar mounting systems. Installation can be finished within one day, removing the nearly one month waiting period required for concrete work.

Carport Foundations

The solar carport mounting system foundations bear large wind loads and need good compression and pull out resistance. We recommend ground screws with large spiral blades. This solution is widely adopted in many developed countries and keeps the site neat and good looking.

Municipal & Traffic Projects

Light duty ground screws serve as foundations for guardrails and fences. They are applied for road construction barriers, scenic area enclosures and highway guardrail bases. They can be removed after use and reused.

Customer Reviews

Our company has been in business for 9 years. We have worked with numerous partners across dozens of countries worldwide. We supply a full range of solar mounting products, including solar roof mounting systems, solar ground mounting systems, solar carport mounting systems, solar balcony mounting systems and solar accessories. Customers give us positive feedback after receiving goods. They are satisfied with our product quality, on time delivery and full range support throughout cooperation. Many clients keep placing repeat orders and maintain long term partnerships with us.

Q&A

Q1: What is the maximum load your ground screw can bear?

A: The ground screw piles load bearing capacity depends on local soil conditions, land thickness, spiral blades and diameter of the ground screw. We can customize suitable products for your project.

Q2: What material are ground screws made of? What is their service life?

A: They are made of Q235 carbon steel with hot dip galvanizing treatment. Magnesium aluminum zinc coating is also available. Under normal soil conditions, the service life can reach 25 years.

Q3: Can ground screws be installed in all types of soil? What if rock is encountered underground?

A: Sand and clay are ideal for ground screw installation. They also work with soil containing small amounts of broken stones. Ground screws cannot be twisted into rock. We can provide alternative customized solutions according to actual site conditions.

Q4: Can you customize the length, diameter and number of spiral blades for my project?

A: We support both ODM and OEM customization. You may send us your project drawings, and our professional engineers will work out tailored solutions for you.

Q5: What is your lead time? Can you rush the production?

A: Standard products are in stock at our factory with short lead times. Production lead time depends on the order quantity.You can contact us about urgent projects situation. We will check our production capacity and reply regarding the delivery schedule.

Q6: What equipment do I need to install ground screws?

A: You can use a small excavator or electric pile driving tools.