Solar Mounting Structures: Fixed-Tilt Vs Trackers Vs Elevated Systems

The most important thing in solar mounting is basically choosing the right structure for enhanced energy, decreased costs, and multifunctional land use.  When it comes to solar energy, everyone thinks about the panels. Without a doubt, it is the heart of any photovoltaic (PV) system; however, the solar mounting structure is also crucial to support the panel and ensure its reliable operation.

Solar mounting systems affect the performance, mechanical integrity, cost, and even the multifunctionality of a PV system. And with three types of mounting structures to choose from fixed tilt, trackers, and elevated structures how can you know which one to pick?

 Fixed-Tilt: The Simplest and Most Predictable Solar Mounting System

The simplest and most predictable of the three is the fixed-tilt structure. Fixed-tilt systems hold the panels at a stationary tilt and azimuth angle for the lifetime of the PV system. This tilt is usually set based on the latitude of the installation site and the desired energy production.

The main advantage of fixed-tilt structures is their simplicity: without any moving parts, they are more reliable and less prone to mechanical failures. A fixed-tilt solar mounting system is also easier to assemble on sloped or uneven terrains as the tilt of each row of panels can be adjusted.

However, fixed-tilt systems do not allow for tracking the sun, meaning that the panels’ energy production will always peak around solar noon and drop sharply otherwise.

Overall, these structures are best suited for residential and commercial rooftops, small-scale solar farms, uneven terrain, and places where the overall cost and complexity of the mounting system are of higher priority than energy production.

Solar Trackers: Follow the Sun for Higher Energy Production

To maximize the energy production of a PV system, one might want to consider solar trackers. As the name suggests, these structures track the sun’s movement across the horizon, tilting and rotating the panels to face the sun. There are two kinds of trackers: single-axis and dual-axis.

Single-axis trackers are the most common type of solar tracker. They rotate the panels around a horizontal axis, usually from east to west. Modern single-axis trackers use backtracking algorithms to prevent the shadows of the panels from falling on one another during dawn and dusk.

Solar trackers boost the energy production of PV systems by 12% to 25% on average over fixed-tilt structures. Moreover, the energy production graph is more consistent throughout the day than that of fixed-tilt panels. By rotating the panels, the PV system can produce the most energy possible, not just around noon when the sun is at its highest point in the sky.

The increased energy production comes at a price of extra mechanical complexity. Extra moving parts imply lower reliability, higher maintenance and repair costs, and a higher upfront cost of the PV system. The extra weight also puts more strain on the foundation of the structure, requiring it to be stronger and, therefore, more expensive. Solar trackers require relatively flat plots of land with little to no slope.

A special type of PV system, bifacial PV systems take advantage of their ability to produce energy on both sides and combine them with single-axis trackers for increased energy production.

 Finally, there are dual-axis trackers, which adjust both the tilt and azimuth of the panels. While they are more complex and more expensive than their single-axis counterparts, they are able to boost the energy production of a PV system by 30% to 45%.

 They are also less common, with their special use-case requiring a higher cost-benefit ratio than the one offered by single-axis trackers. That said, the choice between single-axis and dual-axis trackers will always depend on the specifics of the project.

Elevated Structures: Farming and Grazing Under Solar Panels

When it comes to land, solar panel farmers have the conundrum of having to choose between using it for farming or installing solar panels on it. However, an innovative solution allows farmers to do both at the same time in an agrivoltaic system.

 By raising the solar panels above the ground, elevated structures give the farmer access to the land below. This makes installing the PV system compatible with farming, livestock grazing, parking and many other uses.

 In other words, an agrivoltaic system is a PV system that is designed in such a way that allows farming activities to take place alongside it. Either the panels or the farming equipment can be raised  the choice depends on the farmer and their needs.

There is also the option to use rotating tilt panels that adjust the tilt of the PV panels to balance the energy production of the PV system and the farming yield.

The main disadvantage of elevated agrivoltaic structures is the cost  they tend to cost 25% to 50% more than standard ground-mounted structures. This price difference is attributed to the higher material cost (steel, increased height of the structure) and the need for more specialized equipment to install and maintain the PV system.

That said, if a farmer wants to continue to farm on a certain plot of land while also benefiting from the energy produced by the solar panels, an agrivoltaic PV system with an elevated mounting structure might be worth the investment.

Comparing the Structures: Which One Is the Best?

The solar mounting structure is a vital part of any PV system. Choosing the right structure is a matter of weighing the pros and cons of each structure and seeing which one suits your needs best.

Fixed-tilt structures are the simplest of the three and do not allow for much flexibility apart from the initial setup. They provide stable energy production around noon and require lower material costs.

Single-axis trackers are a better option for large-scale PV systems and flat plots of land, providing stable and consistent energy production throughout the day with only a moderate increase in cost and complexity.

Dual-axis trackers are usually too expensive and complex for most applications, but they offer the highest flexibility and energy production with increased complexity and a cost that is roughly 30% to 45% higher than that of a fixed-tilt structure.

For agrivoltaic systems, elevated structures offer multifunctionality and allow both energy production and farming or grazing to take place on the same plot of land. The main disadvantage of this kind of system is the higher cost and the need for extra equipment.

These are the main differences between a fixed tilt and tracker solar mounting structure and, by extension, an elevated one. However, which structure is better ultimately depends on the individual case.

The cost-benefit analysis is also a matter of individual preference. While fixed-tilt structures usually have the lowest upfront cost, a more complex but efficient PV system might prove to be more profitable in the long run.

The Future of Photovoltaic Solar Panels and Mounting Systems

Solar mounting systems are a growing part of the renewable-energy industry. As the cost of PV panels decreases, companies start paying more attention to the other components of a PV system, such as the mounting structure, foundation, and mechanical components.

The global solar PV mounting systems market was valued at roughly USD 44–45 billion in 2025 and is projected to reach about USD 55 billion by 2030 and USD 70+ billion by 2035. The agrivoltaics market stood at around USD 4.7–5.8 billion in 2025 and is forecast to reach roughly USD 8.3–9.7 billion by 2032 under conservative scenarios, with some models projecting higher growth. The importance of these structures is growing with the overall increase of solar energy’s share of global electricity production. Just like there is no one technology that can power every PV system, there is no one perfect solar mounting structure that can serve every purpose.

 A simple fixed-tilt structure, a sun-tracking device or an elevated structure are all great options depending on the circumstances. By weighing the pros and cons of each, you can choose the best structure for your PV system.