Is it Better to Install Solar Panels in Rows or Arrays?

Layout Considerations

When it comes to solar panel roof mount, the layout of the panels can significantly impact energy production and efficiency. Installing solar panels in rows, also known as a linear array, allows for better airflow and reduced shading between panels. This is particularly important for roof mounts, where shading from roof edges, vents, or other obstructions can be a significant issue.

Shading Mitigation

In a row layout, the panels are typically installed parallel to each other, with a slight offset to account for the angle of the sun. This offset, known as the “tilt angle,” can range from 20 to 40 degrees, depending on the latitude of the installation. By installing panels in rows, you can minimize the impact of shading from nearby obstructions, such as trees or neighboring buildings.

Energy Production and Efficiency

Studies have shown that a row layout can result in up to 10% more energy production than a traditional array layout, even with the same number of panels. This is due to the reduced shading and improved airflow, which allows each panel to operate at its maximum efficiency. Additionally, a row layout can be more aesthetically pleasing, as the panels are installed in a single line rather than a grid-like array.