East-West Split Solar Arrays: What Are the Advantages?

Reducing Shadowing and Increasing Energy Output

An East-West split solar array splits the solar array into two sections, one facing east and the other facing west. This configuration significantly reduces shadowing between panels, especially during critical morning and evening hours when the sun is low in the sky. By minimizing shadowing, East-West arrays can increase energy output by up to 10% compared to a traditional south-facing array. This is particularly important for off-grid systems that rely on every watt of power.

Designing for Optimal Performance

To achieve optimal performance, East-West arrays should be designed with careful consideration of the site’s layout and shading conditions. A general rule of thumb is to allocate 50-60% of the array to the eastern section, with the remaining 40-50% allocated to the western section. This balance ensures that both sections receive equal amounts of sunlight throughout the day, maximizing overall energy output. By incorporating this design principle, East-West arrays can achieve peak power output and efficiency.

Aesthetics and Installation Considerations

While East-West arrays may require more complex installation procedures, the benefits far outweigh the added complexity. To ensure a neat and professional installation, consider using a modular array design that incorporates snap-together connectors and pre-assembled panels. This makes it easier to install and maintain the array, reducing labor costs and minimizing the risk of errors. By choosing a modular design, you can create a visually appealing East-West array that complements your property’s architecture and maximizes energy output.