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What are the different solar panel tracking systems and which one is best for you?

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Solar panels are a great way to generate clean and renewable energy for your home or business. But did you know that you can increase their efficiency and output by using a solar panel tracking system? A tracking system is a device that adjusts the angle and orientation of the solar panels to follow the sun's movement throughout the day. This way, the panels can capture more sunlight and produce more electricity. However, not all tracking systems are the same. There are different types, designs, and features that suit different needs and preferences. In this article, we will explain the different solar panel tracking systems and help you decide which one is best for you.

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Parham Daroudi

Energy Efficiency Specialist | Energy & Carbon Consultant | Enthusiastic about Sustainable Construction, Green Building…
Manish Naik

Founder & Owner at SuGree Products

1 Single-axis trackers

Single-axis trackers are the most common and simple type of tracking system. They rotate the solar panels along one axis, usually horizontal or vertical, depending on the latitude and season. Single-axis trackers can increase the solar output by 15-25% compared to fixed panels. They are also relatively easy to install and maintain. However, they have some drawbacks, such as higher costs, more space requirements, and lower performance in cloudy or snowy conditions.

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Wish Bakshi

Transforming Energy & Utilities with Data & AI Systems | Specialist in Trading, SCADA, Thermal, LNG, Renewables
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Single-axis trackers rotate on one axis, moving back and forth in a single direction. They are typically aligned along a north-south path to track the sun’s east to west movement. Examples: HSAT, VSAT, TSAT or PSAT. Lower cost and simple design but less efficient. Dual-axis trackers can move both east-west and north-south, allowing them to follow the sun’s position throughout the day and year, adjusting for both azimuth and elevation changes. High efficiency with high O&M costs.

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2 Dual-axis trackers

Dual-axis trackers are more advanced and sophisticated than single-axis trackers. They rotate the solar panels along two axes, both horizontal and vertical, allowing them to follow the sun's position more accurately throughout the day and year. Dual-axis trackers can increase the solar output by 30-40% compared to fixed panels. They are also more adaptable to different climates and terrains. However, they also have some disadvantages, such as higher complexity, higher costs, higher maintenance, and higher risk of damage from wind or hail.

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3 Passive trackers

Passive trackers are a special type of tracking system that use a thermally responsive mechanism to move the solar panels. They do not require any motors, sensors, or controllers, but rely on the expansion and contraction of a liquid or gas inside a cylinder. As the sun heats up one side of the cylinder, the liquid or gas pushes the panel to the opposite side, creating a tracking motion. Passive trackers are very simple, cheap, and reliable, but they are also less precise and efficient than active trackers.

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4 Active trackers

Active trackers are the opposite of passive trackers. They use motors, sensors, and controllers to move the solar panels according to the sun's position and other factors, such as weather, temperature, or load. Active trackers are more accurate and efficient than passive trackers, but they also require more power, components, and maintenance. Active trackers can be either single-axis or dual-axis, depending on the design and configuration.

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5 Which one is best for you?

The best solar panel tracking system for you depends on several factors, such as your budget, location, space, energy demand, and environmental conditions. Generally speaking, if you want to maximize your solar output and performance, you should opt for a dual-axis active tracker. However, if you want to save money and space, you might prefer a single-axis passive tracker. Alternatively, you can choose a hybrid system that combines different types of trackers or a smart system that optimizes the tracking algorithm based on data and feedback. Ultimately, the choice is yours, but you should always consult a professional solar installer before making a decision.

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Manish Naik

Founder & Owner at SuGree Products
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Very well covered points. One may also like to consider if it is an off-grid installation or a grid-tied. Having a tracking system for an off-grid system is more rewarding as the backup from grid is not available so it helps to maximise the generation. Solar trackers also need some maintenance from time to time so the ones for which you can get adequate maintenance support should be selected.

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6 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?

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Parham Daroudi

Energy Efficiency Specialist | Energy & Carbon Consultant | Enthusiastic about Sustainable Construction, Green Building & Net Zero Carbon Practices | Pursuing Excellence in Construction Project Management
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From my point of view this article provides sufficient information in terms of solar panels tracking methods, however other aspects such as an off-grid installation or a grid-tied could be considered to see if which method works better for which off grid or grid-tied. Because sometimes it’s costly to implement dual axis systems tracking for off grid installations. However everything is possible but in what costs?? And if off grid installation matters, what are the energy storage strategies and again in what cost?

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What are the different solar panel tracking systems and which one is best for you?

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1 Single-axis trackers

2 Dual-axis trackers

3 Passive trackers

4 Active trackers

5 Which one is best for you?

6 Here’s what else to consider

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