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All Your Solar Project Needs in One Place

Our Design Assistant tools will guide you through each project phase — including design, quoting, permitting, and installation. Making a free account unlocks additional functionality:

Save and edit projects

Share designs with others

Send orders to distributors

Questions? Call us at 1-800-227-9523.

Design Assistant Features

Choose the Right Application for Your Project

XR PR Design Assistant

Flush Mount for Pitched Roofs​​

Attached Flat Roof Design Assistant

Tilt Mount for Attached Flat Roofs​​

Ballasted Flat Roof Design Assistant

BX for Ballasted Flat Roofs​​​

Ground-Based Design Assistant

Ground Mount for Ground-Based

QRail QDesign Tool

QRail for Pitched Roofs

GreenLancer Permit Packs


Now installers can purchase solar permit plans, structural and electrical plans right from Design Assistant with a click of the button. Simply select the “Permit Pack” option at the top of the Bill of Materials page on your next Pitched Roof Design Assistant project to request plans from GreenLancer.

You can trust GreenLancer’s nationwide network of solar design and engineering firms for their guidance and support in delivering proposals, permit-ready drawings, and Professional Engineering reviews. Thanks to this partnership, you can take advantage of deep discounts as well (~25% off most offerings).

Learn more at