ProcessUp to date · Jan 15, 2026
Structural Engineering Review
An assessment by a licensed structural engineer confirming that a roof can support the additional weight of solar panels and mounting hardware (typically 2-4 lbs/sq ft).
Why It Matters
Required by most AHJs, especially for older roofs or non-standard structures. The cost ($200-$500) is usually included in your installer's quote.
Related Topics
Related Terms
Site Assessment
An evaluation of a property's suitability for solar installation, including roof condition, orientation, shading, structural capacity, electrical panel, and utility interconnection.
AHJ (Authority Having Jurisdiction)
The local government entity (city, county, or township) responsible for permitting, inspecting, and approving solar installations and other electrical/building work.