The cost of a ground-mounted solar system can vary based on a variety of factors. While it’s not accurate to classify ground-mounted systems as universally expensive, they can involve higher upfront costs compared to rooftop installations. Here are some considerations that may affect the cost of a ground-mounted solar system:

1. System size: The size of a solar system (measured in kilowatts (kW) or megawatts (MW)) directly affects cost. Ground mounted systems offer greater flexibility in terms of available space, allowing for larger system sizes if required. Larger systems typically require more solar panels, mounting structures, and electrical components, resulting in higher costs.

2. Mounting system and foundation: The type of mounting system and foundation used for a ground-mounted system will affect the cost. Different mounting options, such as fixed tilt, single-axis tracking, or dual-axis tracking, have different cost and performance characteristics. The foundation may require excavation, grading or specialized work, adding to the overall cost.

3. Site preparation: Ground-mounted systems typically require site preparation, including clearing vegetation, leveling the land and ensuring proper drainage. Factors to consider include topography, soil conditions, drainage and available space for the array. Challenging terrain or difficult soil conditions may require additional preparation, such as grading or soil stabilization, affecting the cost.

4. Sunlight Availability: The availability and quality of sunlight at the installation site affects system performance and energy production. Ground-mounted systems offer greater flexibility to optimize panel orientation and tilt to maximize sunlight exposure. Proper positioning and alignment can improve system performance and energy production. However, if the site has shading issues or requires additional equipment to reduce shading, costs may increase.

5. Electrical Infrastructure: Ground-mounted systems may incur additional electrical infrastructure costs. This includes underground cabling, digging trenches, connecting to the grid and installing inverters and monitoring systems. These electrical components increase the overall cost of the system.

6. Operation and maintenance considerations: Operation and maintenance costs should be included in the overall cost assessment. Ground-mounted systems are generally easier to maintain and clean than roof-mounted ones, potentially reducing ongoing expenses. However, there are still costs to consider for vegetation management, cleaning and regular inspections over the life of the system. When evaluating long-term expenses, consider these ongoing operations and maintenance (O&M) costs.

7. Permits and Regulatory Requirements: Costs associated with obtaining permits, conducting environmental studies, meeting compliance requirements, and grid interconnection fees may vary based on local regulations and utility requirements. These costs can add to the overall expense of a ground-mounted system.

8. Installation Complexity: The complexity of the project, including site preparation, groundwork and labor requirements, affects the overall cost. Challenging installations, such as those on steep slopes or with difficult soil conditions, may involve higher costs.

9. Transportation and Logistics: Transporting solar panels, mounting structures, and other equipment to the installation site may increase costs. Consider distance, logistics, and potential need for specialized equipment or transportation permits.