Different Edge Types

Summary

This article walks you through how to define edge types in OpenSolar's design tool. Accurately defining roof edges—gutters, ridges, valleys, and rakes—is an essential step to ensure the platform correctly calculates your system’s annual kWh production based on the roof layout.

💡 Pro Tip: Before adding solar panels to your design, make sure all roof edges are drawn and labeled correctly. Also, be sure to add your setbacks before panel placement to comply with local codes and optimize layout.

Table of contents:

• Gutter
• Ridge
• Valley
• Rake

Gutter

• Color Indicator in OpenSolar: Green

• Definition:
  Gutters are the horizontal roof edges that run parallel to the ground—typically the lowest edge of a sloped roof surface.

• Design Behavior:
  Panels placed on the roof face will automatically orient toward the gutter line.

Example: Gutter Edges in 2D and 3D Views

Ridge

• Color Indicator in OpenSolar: Yellow

• Definition:
  Ridges are horizontal edges at the peak of the roof where two sloped surfaces meet in a convex angle. These are typically the highest points on the roof.

• Design Behavior:
  Panels will automatically face away from ridge lines.

Example: Ridge Edges in 2D and 3D Views

Valley

• Color Indicator in OpenSolar: Blue

• Definition:
  Valleys form where two sloped roof surfaces meet in a concave angle. Unlike ridges, valleys typically slope downward and are not parallel to the ground.

• Design Behavior:
  Valleys help define the interior geometry of complex roof structures.

 Example: Valley Edges in 2D and 3D Views

Rake

• Color Indicator in OpenSolar: Blue (Note: Shares color with Valley)

• Definition:
  Rakes are angled edges on the sloped perimeter of the roof that are not parallel with the ground. They typically run between the ridge and gutter and appear in pairs.

• Design Behavior:
  Useful for refining the system boundary and shading analysis.

 Example: Rake Edges in 2D and 3D Views