Single-Axis Tracker Vs Fixed-Tilt: What's the Difference?

When considering solar panels for your home or business, you will find two main options. These options are fixed panels and solar tracking systems. Understanding the differences between these two types of installations can help you make an informed decision. In this post, we will discuss the differences between single-axis tracker vs fixed tilt systems. We will look at their advantages, costs, and how they impact energy production.

What is the main difference between Solar Tracking vs Fixed Panels?

Solar tracking systems and fixed panels differ mainly in how they adjust the angle of the panel. Solar tracking systems move the solar panel to follow the sun throughout the day, so it gets the most sunlight possible. In contrast, a fixed-panel system uses a single angle that remains constant. 

Efficiency:

Solar trackers capture more sunlight than fixed panels because they can move to follow the sun throughout the day. This is especially beneficial when the sun is higher in the sky. This means that solar tracks can make up to 33.4% more energy than fixed solar panels. These heaters work well in areas with long, harsh winters and limited sunlight. They are able to efficiently capture a lot of energy.

However, this increased efficiency comes with drawbacks like higher costs and complexity. Solar trackers need extra parts like motors, controllers, and sensors, making them much more expensive than fixed panels, which only need a few basic components. Additionally, solar trackers require regular maintenance and calibration to perform well throughout the year.

While solar tracking systems work best at collecting energy during peak hours when there is plenty of sunlight, they are less effective at capturing diffused light on cloudy days or during early mornings and late evenings. During these times, stationary solar panels actually perform better because their angles remain constant regardless of changing weather conditions.

Comparing Cleaning and Maintenance Costs:

Additionally, stationary panels do not require moving parts or complex sensors, making them easier and cheaper to install and maintain compared to solar trackers. They are perfect for people who want a cheap way to make clean energy without having to deal with technical problems or pay extra for installation.

Regular cleaning is important for keeping solar panels working well and avoiding hot-spot failures. The cleaning process may involve a fixed fee and a per-unit area cost covering labor and materials. Despite its benefits, soiling can lead to annual energy losses ranging from 4.3% to 7.5%. In places with lots of dust, pollen, or bird droppings, cleaning costs may be on the higher side.

Single-axis trackers necessitate additional maintenance for their moving parts and associated systems to ensure ongoing effectiveness. This maintenance includes electrical components, controls, racks and actuators, monitoring systems, and battery replacement.

Regular checks of backup systems are crucial. It ensures that they are functioning correctly when there is a power outage. Ensuring the backup systems are working properly is important. This can prevent any disruptions in power supply during an outage.

Snow depth and wind sensors should also undergo routine checks to ensure proper functionality. Any malfunction in these components could lead to a failure in the solar panel tracking system. Regular maintenance is important to keep single-axis tracking systems reliable and performing well.

Required Space:

Space is another important factor to consider. Most residential properties have limited space for installing solar panels. If you pick a stationary system, you can install more panels on your property because there are no moving parts. In contrast, a tracker system requires more space because of its increased size and the components needed for its operation.

Solar trackers are good at making more energy, but the ground they’re on must be strong enough to move. They work best in areas where the ground is not bumpy and is mostly flat. When deciding where to put them, it’s important to consider the type of ground and the amount of energy needed. If you check the ground and plan well, you can make these trackers work well in certain places.

Solar Racking Costs: 

Although single-axis trackers can increase production, it is important to consider the extra costs for installation and maintenance. Fixed-tilt solar systems cost less to set up than solar trackers, but they also produce less energy.

The cost of energy for single-axis tracking systems is typically lower than fixed-tilt systems. This is true when looking at both fixed and variable costs. People use the Levelized Cost of Energy (LCOE) to compare these costs.

Fixed-tilt racking systems are cheaper in the long run compared to single-axis tracking systems. This is because they have fewer moving parts and do not need electronics or a drivetrain. Both systems require routine maintenance, including vegetation management, snow removal, and cleaning. However, the specialized professional maintenance required for single-axis tracking systems tends to elevate their overall costs.

Which System is Right for You?

The choice between fixed panels vs solar tracking systems depends on several factors, including

Cost:

When comparing fixed panels and solar trackers, consider initial installation costs and long-term financial benefits. Fixed panels generally have a lower upfront cost because of their simpler installation process and lack of moving parts. This makes them a more affordable option for homeowners and small businesses with limited budgets.

Solar tracking systems cost more at first because they are complex and need special equipment. However, the increased energy production from tracking systems can lead to significant savings on electricity bills over time. Solar trackers may cost more upfront for big projects. However, the extra energy generated and financial advantages can make up for this initial expense in the long run.

Maintenance costs are another important factor to consider. Fixed panels require minimal maintenance, primarily consisting of occasional cleaning and inspections. In contrast, solar tracking systems require regular maintenance to ensure the moving parts are functioning correctly.

This can include lubrication, alignment checks, and repairs, which can add to the overall cost of the system. Solar trackers may need more maintenance. However, they can produce more energy. This extra energy can make the costs worth it. Many people find solar trackers to be a valuable investment.

Single-Axis Tracker Vs Fixed-Tilt Solar Vegetation Maintenance

To save money, design equipment better and plant shorter plants to ensure there is room for mowing equipment. You can achieve this by designing equipment and planting short plants. This will make maintenance easier and more cost-effective. Plan ahead and think about where to place solar panels for easy maintenance access. By implementing these strategies, you can reduce the overall costs of maintaining the solar panels.

Snow removal becomes an integral part of the maintenance routine in regions prone to snowfall. Both fixed-tilt racking and single-axis trackers require snow removal, with trackers needing extra attention to prevent blockages. This preventive measure is vital to avoid damage to the mechanical drive caused by heavy snowbanks.

Having a good plan to remove snow is crucial for keeping solar tracking systems working well for a long time. It shows how important it is to take care of them in different weather conditions.

Space Requirements of Single-Axis Trackers

Another factor to consider is the amount of land utilized in solar installations. Single-axis trackers typically require more space because they space the rows further apart to prevent shading. While this wider spacing reduces shading, it results in a larger land footprint, consequently increasing land costs for developers.

Fixed-tilt systems need 4-5 acres per MW, while single-axis tracking systems need 4-7 acres per MW on average. Single-axis solar trackers need more land and maintenance. However, they can decrease the number of panels required for your solar power needs.

This helps make more energy, even though it might cost more to install and maintain single-axis tracking systems. Developers must carefully consider land use, energy production, and costs when choosing solar technology for projects. This balance is crucial.

Solar Racking System Design

Cities and states are using renewable energy to fight climate change. Some solar projects will be put in places not usually chosen. These locations could encompass regions with undulating hills or slopes, obstacles such as trees, or challenging geotechnical conditions. Fixed-tilt mounting systems work well in different terrains, like slopes and rolling land. They are effective and can be installed easily.

Loose soil, rocks, buried organic materials, and other obstacles can make installing a solar system’s foundation more complicated. Manufacturers make fixed-tilt systems for challenging ground conditions. They have a foundation that they can easily adjust.

The foundation is also strong enough to withstand harsh weather. Developers prefer fixed-tilt systems for solar projects in tough terrains. They ensure reliable performance and longevity in less-than-ideal sites.

Solar Tracking Systems Thrive in Favorable Conditions

Solar trackers are good at making more energy, but the ground they’re on must be strong enough to move. They work best in areas where the ground is not bumpy and is mostly flat. When deciding where to put them, it’s important to consider the type of ground and the amount of energy needed. If you check the ground and plan well, you can make these trackers work well in certain places.

Shading Impacts on Solar Panel Performance

Another important thing to think about when setting up a solar project is shading. It’s importatnt to consider how far apart the solar panels are placed. For a single-axis tracker system, there must be enough space between the panels to avoid shading, which can slow down how much energy they soak up.

Also, you’ll need more space to install a single-axis tracker system than a fixed one, even if you want them to produce the same amount of energy. So, paying close attention to how the panels are spaced out and planning the site’s layout is key to getting the most energy from a single-axis solar system, especially when dealing with shading challenges.

For those with larger energy needs or for utility-scale solar farms, solar tracking systems may be more suitable. The increased energy generation from tracking systems can provide significant financial benefits over time, making the higher initial investment worthwhile. Additionally, in regions with high solar insolation, the performance gains from solar trackers can be substantial, further enhancing their appeal.

Ultimately, the decision between fixed panels vs solar tracking systems should be based on a careful analysis of your specific needs and circumstances. By understanding the benefits and costs of each system, you can make an informed choice that maximizes your solar energy production and financial savings.

Final Thoughts

Overall, both solar tracking systems and fixed panels have their advantages and disadvantages depending on your location and needs. Before making any decisions, it’s important to consider all the factors mentioned above. Before deciding, think about all the factors mentioned. This will help you choose a system that is efficient, affordable, and meets your energy needs.

Solar Earth Inc., with expertise and certifications, offers comprehensive solar solutions for homes and businesses in California. Contact us today to transform your home into a sustainable, long-term renewable energy source.