Quick Answer
To select the right location for bifacial solar arrays, look for areas with minimal shading, optimal sunlight exposure, and a south-facing slope of between 20 and 40 degrees. The ground should be clear of debris and vegetation to maximize energy production. Choose a location with minimal interference from trees, buildings, or other obstacles.
Site Selection Criteria
When selecting a location for bifacial solar arrays, consider the following site selection criteria: solar irradiance, solar altitude angle, and obstructions. Opt for areas with high solar irradiance levels, typically above 150 W/m². Ensure the solar altitude angle is within the optimal range of 20-40 degrees to maximize bifacial energy production.
Slope and Shading Considerations
The slope and shading of the site play crucial roles in bifacial solar array performance. A south-facing slope is ideal, and the angle should be between 20-40 degrees to minimize shading from adjacent structures or trees. Avoid areas with significant shading, as this can reduce energy production by up to 20%. For example, a 3-kW bifacial solar array with 20% shading can lose up to 600 kWh of energy per month.
Ground and Vegetation Management
Clearing the ground and managing vegetation around the solar array is essential for optimal performance. Remove any debris, rocks, or weeds that can cause damage or shading issues. For a 1-acre site, plan to dedicate at least 10% of the area for maintenance access and vegetation management. Regularly inspect and maintain the site to ensure that bifacial energy production remains optimal.
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