The following are the types of foundations that can be used to support mounting frames in ground-based systems:
Precast Concrete block Foundation
In this type of foundation, concrete blocks of the requisite weight needed to prevent uplift of mounting structures are precast in a factory and subsequently brought to the site to be installed.
It’s easier to perform quality control on blocks precast in a factory than on-site. The installation process for such mounting frames is also faster as compared to in-situ concrete foundation casting.

Drilled Pile Foundations
In drilled pile foundations, a hole is first made in the ground at the required depth. A steel section is then placed inside and concrete is casted afterwards, or a steel section can be installed directly in the ground using the pile driving method without the need to cast concrete in-situ.
Drilled pile foundations are required when ground conditions are not suitable for mounting structures, or there is a large number of panels to mount. The process of installing drilled pile foundations is fast and efficient but can be costly.

Earth nail or screw foundation
Earth screws are similar to steel piles but they are lightweight and require less machinery to install. Grooves carved into the earth screws help the solar panels withstand wind uplift pressure by holding on to the ground. Earth screws come in various sizes to meet clients’ needs and are popular nowadays for small projects.
