Quick Answer
Single-Axis Trackers in Northern Climates: Are They Effective --- Single-Axis Trackers can be effective in Northern climates, capturing up to 40% more solar energy than fixed mounts, but performance may be limited by shorter winter days and lower sun angles.
Choosing the Right Single-Axis Tracker
When selecting a Single-Axis Tracker for a Northern climate, consider the latitude and the tracker’s ability to rotate along a single axis. A tracker with a higher azimuth angle range (e.g., 360°) can better adapt to changing sun angles throughout the year. For example, a tracker with a 360° azimuth range can adjust to the winter sun’s lower angle in the northern hemisphere.
Performance Optimization Techniques
To optimize performance in Northern climates, consider the following techniques: 1) Inclination adjustment: adjusting the tracker’s tilt to compensate for seasonal changes in sun angle, and 2) Winter mode: temporarily adjusting the tracker to a fixed position to maximize energy capture during the shortest days of the year. A common inclination adjustment range is between 15° and 40°, depending on the latitude and desired energy capture.
Design and Installation Considerations
When designing and installing a Single-Axis Tracker in a Northern climate, consider the following factors: 1) Ground clearance: ensuring adequate clearance to accommodate the tracker’s movement and potential snow loads, and 2) Structural support: reinforcing the tracker’s mounting structure to withstand harsh weather conditions. A typical Single-Axis Tracker installation may require a 10-15% increase in structural support to account for the tracker’s movement and wind loads.
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