Ground Solar Racking System Details

A solar mounting framework serves the purpose of anchoring solar panels, whether installed atop buildings or positioned on the ground. When rooftop installations are impractical or impossible, ground-mounted configurations offer a viable alternative.

Throughout this article, we'll delve into the specifics of ground-mounted solar installations, discussing their advantages and disadvantages, and helping you determine if they're the right choice for your residence.

What is a ground-mounted solar panel system?

ground-mounted solar energy system refers to an array of solar panels positioned on the ground within your property, rather than being affixed to your home's rooftop.

Such installations are feasible in any area of your property that offers ample space and receives direct sunlight. The height at which the panels are mounted can vary, with setups ranging from just a few inches to several feet above ground level, depending on the configuration of the mounting structure. These panels generate electricity that is then converted from DC to AC by a solar inverter, which can be installed close to the panels or inside your home.

For home use, ground-mounted solar setups often utilize 60-cell panels, which are the standard size for residential rooftop solar systems. On the other hand, larger installations, such as those in solar parks, typically employ the bigger 72-cell panels.

Types of Mounts

On rooftops, mounting systems typically involve a framework that attaches directly to the roof's structural supports, such as beams and rafters. For situations where drilling into the roof is not preferred, like with clay or metal roofs, or on flat roofs prone to water pooling, there are alternatives like free-standing, weighted racking options.

For installations on the ground, racking frameworks are either anchored to concrete bases or elevated on poles, which is particularly beneficial in regions prone to heavy snowfall or for applications like agrivoltaics, where solar energy production is combined with agriculture.

Solar arrays mounted on poles feature the ability to support several panels on a single pole, raising them further off the ground compared to traditional ground mounts. These pole-mounted systems sometimes include tracking mechanisms that pivot the panels to follow the sun's path, maximizing sunlight capture.

The inclusion of a tracking system can boost panel efficiency significantly, by at least 25 percent. For those considering trackers for their ground-mounted systems, the choice between single-axis and dual-axis trackers is available. Single-axis trackers pivot panels throughout the day to track the sun's trajectory, while dual-axis trackers adjust for both daily motion and seasonal sun position changes.

Materials for both rooftop and ground-based mounting systems usually consist of durable aluminum and stainless steel, chosen for their strength and ability to withstand environmental stresses. This durability is crucial, as the mounting system must be capable of handling snow loads up to 90 pounds per square foot and wind speeds as high as 190 mph.

Costs of a Ground-Mounted Solar System

Typically, the cost of a solar installation averages around $2.81 per watt. This means a system capable of generating 6 kilowatts, sufficient for the typical American home, would have an all-inclusive price of $16,860. However, opting for a ground-mounted setup incurs additional expenses due to the need for concrete foundations, more complex mounting apparatus, increased labor, additional permits, and possibly a tracking mechanism, which alone could elevate the cost by $500 to $1,000 for each panel.

Investing in solar technology is a commitment to the future, thus the initial financial outlay, while significant, isn't the sole factor to consider. The true measure of value is the return on investment (ROI), influenced by various elements including panel efficiency and cost, financing charges, local labor rates, governmental incentives, and the prevailing electricity rates in your locality. On average, it takes between 7 to 12 years for a solar installation to recoup its costs.

The efficiency of a ground-mounted system, particularly its ability to generate more power with fewer panels, plays a crucial role in its economic viability compared to rooftop installations. This efficiency can lead to a faster ROI.

Deciding on the best option for your solar energy setup involves more than just considering the initial costs. Consulting with a skilled contractor can provide insight into the advantages and disadvantages of each type of installation, guiding you towards the most financially sensible choice.