Trust page

Methodology for Solar Research and Directory Profiles

How Solar Panel System Guide sources claims, handles unknowns, dates its verification, and checks installer directory profiles before publication.

Source standards

Claims are drawn from primary manufacturer datasheets, national laboratory and energy authority sources before publication.

No invented values

Efficiency, wattage, degradation, and prices are left unknown until a source confirms them.

Directory firewall

Payment for a directory listing never changes a profile's verification status, its ordering, or the evidence boundary applied to every provider.