Solar Panel Tracking Systems

The need for dependency on environmentally friendly energy production has been realized worldwide. It has increased the usage of solar panel systems to fulfill electricity and power needs.

The introduction of solar trackers has revolutionized the output level of solar panels. Essentially, solar trackers improve and increase power output without installing more solar panels to achieve it.

If you plan on investing in a solar tracking system for your solar project, read through this guide. Here, you will find the answers to all your questions and the information you need to make the right decision.

Key Takeaways

• Solar trackers help solar panels follow the sun’s movement, optimizing their angle for maximum exposure and increasing energy output, making them a valuable addition to solar projects.
• Solar trackers come in three main types: manual, active, and passive. Each has advantages and disadvantages, making them suitable for various commercial and residential applications.
• While solar trackers can significantly boost energy production, they come with higher installation and maintenance costs. Investing in solar trackers should be based on location, project size, and energy needs, with commercial projects and high-latitude locations being more suitable candidates.

Solar Tracker Overview

A solar tracker is essentially a device that is paired with solar panels. It assists the solar panels to move to follow the sun for maximum sun exposure. By following the sun’s path, the power output of the solar panels is maximized. Solar trackers optimize the angle of the solar panels to receive maximum solar radiation. Tracking systems determine how efficiently incoming light gets converted into energy for use.

Solar trackers are commonly used with solar systems mounted on the ground. It allows for a broader range of movement. Of late, solar trackers have also started being paired with rooftop panels.

Solar trackers are largely more prevalent in commercial projects than in residential projects.

Functionality of Solar Trackers

The angle at which the solar panel and sun rays meet defines the amount of energy that can be produced from that much sunlight. This angle, also called the angle of incidence, is inversely proportional to the energy production of a photovoltaic panel. The job of a solar tracker is to minimize the angle of incidence as much as possible. They position the panels at such an angle that the sun’s rays hit perpendicularly.

Solar tracking systems come in 3 different types. These are the improved versions of a fixed solar panel system to a rotating solar panel mount.

Manual Solar Trackers

As the name suggests, manual trackers require operators to adjust the trackers depending on the sun’s movement. Solar panels need to be manually adjusted throughout the day to keep up with the sun’s movement throughout a single day. Although not exactly practical, this tracking system creates employment and ensures staff is available to maintain the system regularly.

Active Solar Trackers

The most commonly used solar tracker system, active solar trackers, change positions with the help of hydraulic cylinders. In some cases, a solar tracking system may also operate with the help of a motor. Active systems use a combination of time and date algorithms and sensors to determine the sun’s position.

If compared to manual tracking systems, active tracking systems provide more convenience. Since the active tracking system has multiple moving parts, they could break down easily. Therefore, this system calls for higher maintenance costs. It is most suited for complex commercial installations.

Passive Solar Trackers

Passive trackers operate with the help of a liquid. This liquid evaporates quickly on exposure to solar heat because of its low boiling point. On evaporation, the gas tilts the solar panel system towards the sun. The gas cools and condenses into the liquid as the sun sets. Thus, the panels return to their original position.

However, this is the least accurate solar tracking system. Since the level of precision is low, this system is not suited for complex installations. Moreover, this system is unsuitable for solar panels in cold climates. This is because the liquid will take time to heat up and evaporate.

Categorization of Solar Trackers

A solar tracker can be further categorized into two types based on the direction of the movement: a single-axis tracker and a dual-axis tracker.

Single Axis Solar Tracker

A single-axis solar tracker is usually aligned from north to south. It allows the movement of solar panels from east to west, i.e., from sunrise to sunset. This solar tracking system provides maximum efficiency since the solar panel system faces the sun at the right angle from dawn to dusk. Furthermore, it eliminates the need for installing additional solar panels.

Installing and maintaining a single-axis tracking system can be expensive. However, this tracking system can generate enough power to recover the costs attached to running it. Notably, a single-axis tracker can increase energy production by almost 22%.

Dual Axis Solar Trackers

Unlike single-axis solar trackers, dual-axis trackers move on the north and east-west axes. The annual output of solar production is maximized through these dual-axis trackers.

However, the dual-axis system is uncommon, even among utility-scale projects spanning vast open grounds. This solar tracker is highly useful for commercial projects with limited roof space. Since the number of solar panels installed cannot be increased, the scope of movement of this dual-axis tracking system can generate more power.

According to research, on a sunny day, the output voltage of dual-axis solar trackers is 12.93% higher than in the absence of tracking equipment.

Pros of Using Solar Trackers

Solar trackers can safely be termed as one of the best ways to improve the performance and output of a solar panel system. The most significant advantage of tracking solar panels is generating more energy. Solar panels with tracking equipment produce more electricity.

If your energy supplier charges variable time-of-use rates, relying on a solar panel system can help produce more electricity. This is because the tracking system will produce maximum energy during peak hours. Consequently, you will not have to pay for electricity when it is expensive. You will need fewer solar panels if you have a tracking solar panel system.

If you are in high-altitude locations, dual-axis trackers are the best way to maximize the energy produced. Use a dual-axis tracker when the sun’s position greatly varies during the extreme summer and winter months. With the help of this system, you can generate your electricity.

Solar trackers generate more energy output than fixed solar arrays. A fixed array cannot track and follow the sun’s path during the day.

Cons of Using Solar Trackers

A significant disadvantage of solar trackers is that they operate only when exposed to incoming sunlight. Therefore, on cloudy days, the solar tracker system efficiency is affected. A solar tracker’s installation and maintenance costs are also higher than that of a basic solar panel system. Solar panels carry minimum maintenance costs.

Solar tracking systems are generally heavy for installation on rooftops. Therefore, these can mainly be used for ground-mounted systems only. A solar tracker cost is higher because the system has multiple moving components. Moreover, additional wiring trenches are needed for a ground-mounted system.

Solar trackers are not exactly required for residential projects, and they might prove too costly. However, solar trackers might be worth investing in commercial projects with limited roof space. Furthermore, single-axis solar trackers are vulnerable to harsh winds and may get unstable.

Cost of Solar Trackers

After learning how a solar tracker operates, your next question must be, are solar trackers expensive?

Determining the exact cost of installing solar trackers is impossible since each installation is highly customized. However, the components of the cost of tracking equipment include the system’s size and difficulty level of installation.

Another component that affects the cost is the type of tracker installed, whether active or passive trackers.

The cost of installing solar panels doubles if you wish to install a dual-axis tracker. Overall, it takes a long time to recover the cost of installing solar trackers.

Case Study: Enhancing Solar Panel Efficiency with Tracking Systems

Background

At Solar Panels Network USA, we are dedicated to optimizing solar solutions for our clients. One of our recent projects involved integrating solar tracking systems to enhance the efficiency of a commercial solar panel installation. This case study explores the benefits, types, and considerations of using solar trackers to maximize energy production.

Project Overview

A commercial client with a large ground-mounted solar panel system approached us to improve their energy output. They were interested in exploring solar tracking systems to increase efficiency without expanding their existing array. Our task was to evaluate the suitability of different types of solar trackers and implement the best solution.

Implementation

Understanding Solar Trackers:

We began by explaining the three main types of solar trackers: manual, active, and passive. Each type has distinct advantages and is suitable for different applications.

• Manual Solar Trackers: Require manual adjustment to follow the sun’s movement, creating employment opportunities for regular maintenance.
• Active Solar Trackers: Use hydraulic cylinders or motors to adjust the panels’ positions automatically. They provide greater convenience but require higher maintenance.
• Passive Solar Trackers: Operate with a low-boiling-point liquid that evaporates and tilts the panels towards the sun. They are less precise and not suitable for complex installations.

Selecting the Right Tracker:

Given the client’s requirement for minimal manual intervention and high efficiency, we recommended active solar trackers. These systems use time and date algorithms and sensors to determine the sun’s position, ensuring optimal panel alignment throughout the day.

Single Axis vs. Dual Axis Trackers:

We evaluated both single-axis and dual-axis trackers:

• Single Axis Trackers: Move panels along one axis, typically from east to west, to follow the sun’s daily path. They can increase energy production by up to 22%.
• Dual Axis Trackers: Move panels along two axes, tracking the sun’s movement more precisely. These trackers are more expensive but can increase energy production by approximately 30%.

Given the client’s large ground area and need for significant energy output, we chose dual-axis trackers to maximize efficiency.

Installation and Configuration:

We installed the dual-axis trackers, ensuring optimal orientation and tilt angles to capture maximum sunlight. The system was configured to adjust automatically based on the sun’s position, enhancing energy absorption throughout the day.

Cost Analysis and ROI:

We conducted a cost analysis to compare the installation and maintenance costs of the tracking system with the expected increase in energy production. The analysis showed that the increased energy output would offset the higher costs within a few years, making it a financially viable investment.

Results

The implementation of dual-axis solar trackers significantly increased the energy output of the client’s solar panel system. The enhanced efficiency allowed the client to meet their energy needs without expanding the existing array. The client reported a noticeable reduction in electricity costs and a quicker return on investment than initially anticipated.

Summary

Integrating solar tracking systems can significantly boost the efficiency and energy output of solar panel installations. At Solar Panels Network USA, we provide tailored solutions to meet the specific needs of our clients. This case study highlights the importance of selecting the right type of tracker, considering project-specific factors, and evaluating the cost-benefit ratio.

By leveraging solar tracking technology, clients can optimize their solar energy systems, reduce operational costs, and contribute to sustainable energy production.

Expert Insights From Our Solar Panel Installers About Solar Panel Tracking Systems

Solar trackers adjust the angle of solar panels to follow the sun, optimizing exposure and maximizing energy output. This is especially beneficial for commercial projects with ground-mounted systems.

Senior Solar Technician

Investing in solar trackers can be worthwhile for high-latitude locations where the sun’s position varies greatly. The increased energy production can offset the higher installation and maintenance costs over time.

Lead Solar Installer

While solar trackers boost energy production, they come with higher upfront and maintenance costs. It’s crucial to evaluate the specific needs and location of your project before deciding.

Certified Solar Engineer

Experience Solar Excellence with Us!

Trust in Solar Panels Network USA, where our seasoned experts deliver top-quality solar solutions for homes and businesses nationwide. With a legacy of countless successful installations and a commitment to sustainable energy, we’re your reliable partner in the solar journey. Ready for a brighter, eco-friendly future? Call us now at (855) 427-0058 and harness the sun’s power!

Evaluating the Investment Value of Solar Trackers

With depleting natural resources, solar power has been recognized as a truly sustainable energy source. However, installing a solar tracker is not worth the investment in most cases. Since the cost of a basic solar system is very low, installing more panels is more economical than installing tracking equipment.

Adding just single-axis tracking equipment itself would considerably shoot up your installation costs. The cost of adding additional solar panels would be less than installing a solar tracker, while it would also generate an equal amount of electricity.

Solar trackers are a smart investment if you are based in high-latitude locations. They offer a high-value proposition owing to the movement of the sun. However, the best option for those located on lower altitudes is to install a solar energy system on a surface facing the south. Alternately, a ground-mounted solar panel system also gives good results.

Commercial projects also make the right users for a solar tracking system. This is because these systems are usually ground-mounted and have provisions to add a sun tracker. In the long run, it sets off the installation and maintenance costs. On the other hand, solar trackers are not worth the investment for residential use since such a system is costly.

FAQs

Why do I need a solar tracker?

If you have a solar panel system, installing a solar tracker improves the solar capacity. There are different types of solar trackers you can select from – active trackers, passive solar trackers, single-axis trackers, and dual-axis trackers.

Is a solar tracking system very expensive?

Yes, solar tracking systems are generally costly since installing and maintaining the system is very high. It costs much more than installing additional solar panels to the existing system. If your requirement is for residential use, solar tracking systems are expensive. However, if you require it commercially, you can recover the cost in a few years.

Does a solar tracking system require maintenance?

Whether you install a single-axis solar tracker, a dual-axis tracking system, or even active trackers, the maintenance cost is high. This is because this complex system has multiple moving parts, which increase the chances of damage and, thus, maintenance.

Are these systems suitable for my home?

If you aim to go solar, consider installing this system. However, this system is not always suitable. This system is appropriate only for residential purposes if you wish to increase your yearly energy output. Another reason to install it would be if your roof space were minimal and covered by shade.