Power Purchase Agreements are the primary commercial structure for large commercial rooftop and ground-mount solar projects in the UK. Under a PPA, the developer or investor owns and operates the solar PV system, and the site owner purchases electricity at a rate typically below the grid retail tariff. The structural integrity of the roof, evidenced by a signed structural engineering report, is a prerequisite for PPA providers before committing to a project.
PPA providers conduct technical due diligence on proposed sites before executing an agreement. Structural sign-off from Solar Surveys, combined with a drone roof condition assessment confirming roof serviceability over the PPA term, provides the technical foundation for that due diligence. Solar Surveys provides reports in formats accepted by UK PPA providers and their independent technical advisors.