Quick Answer
A dual-axis tracker can increase energy production by 30-50% compared to a fixed mount. This is due to its ability to adjust the panel's tilt and orientation to maximize exposure to sunlight throughout the day.
Understanding Dual-Axis Trackers
Dual-axis trackers utilize two motors to adjust the panel’s position in both the azimuth (horizontal) and altitude (vertical) axes. This allows the panels to follow the sun’s movement from east to west and adjust for seasonal changes in the sun’s position.
Key Benefits of Dual-Axis Trackers
Studies have shown that dual-axis trackers can produce up to 50% more energy than fixed mounts in ideal conditions. This is achieved by maximizing exposure to direct sunlight, which increases panel efficiency. For example, a 2 kW solar panel array installed on a fixed mount in a sunny location may produce around 7,300 kWh of electricity per year. However, the same array installed on a dual-axis tracker may produce up to 10,900 kWh per year, representing a 49% increase in energy production.
Technical Considerations
When designing a dual-axis tracker system, it’s essential to consider factors such as wind loads, structural integrity, and motor power requirements. A well-designed system can withstand wind speeds of up to 120 mph and maintain its position accuracy. Additionally, the system should be equipped with a robust tracking algorithm to account for changes in the sun’s position due to seasonal and daily variations.
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