A little project context makes a better sourcing brief.
Tell us the country, planned system context and the product families you are comparing. If electrical or roof details are still being developed, say which stage the project has reached.
For a commercial procurement brief, share the site application, target DC capacity and available equipment schedule. A bill of materials is useful if your project team already has one.
For ground-mounted procurement, include the project location, module preference and mounting scope. Share the specifications prepared by your project team for further review.
Send the details you have. We will clarify the next questions with you.