PPA Delivery at Scale.
Engineering Certainty.

Our Desktop Structural Roof Loading Reports programme is scaled for PPA pipeline volumes. We currently process over 2,000 desktop structural assessments per month across active PPA pipelines. Programmes can be scaled up or down based on pipeline flow, with a 48-hour delivery benchmark maintained regardless of batch size.

You send a site list, we return Desktop Structural Roof Loading Reports within 48 hours of instruction, with an escalation schedule flagging any sites that require on-site structural investigation before construction. It replaces manual pre-screening and removes the structural bottleneck from your pipeline.

We produce Eurocode-verified, Building Regulations compliant structural reports in a format accepted by lender technical advisors and independent technical advisors (ITAs). Reports are signed by a named engineer carrying £5M professional indemnity insurance. This documentation satisfies lender drawdown conditions at the pre-construction and post-installation stages.

We operate as a continuous pre-construction supply chain partner. Site lists can be submitted by batch or as a rolling feed. We return reports in a consistent format that plugs directly into your programme tracking. Retainer agreements are available for providers with ongoing pipeline commitments, providing agreed per-site rates and dedicated account management.

A conditional pass indicates the roof structure is provisionally adequate subject to a specific condition being resolved: for example, a purlin capacity that needs verification by an on-site engineer, or a roof age that warrants a physical substrate inspection. Conditional passes reduce unnecessary on-site commissions by identifying exactly which sites need escalation and why, allowing your programme team to prioritise on-site resource efficiently.

Increasingly, lender TAs and independent technical advisors require physical evidence of roof substrate condition alongside the Eurocode-verified structural calculations: particularly on older commercial stock or where high-value PPA finance is involved. Our Structural Survey and Drone Roof Condition Assessment combination satisfies both requirements under a single instruction. The combined report format is accepted by major commercial lenders without supplementary requests or format revision.

Yes. Warehouses, logistics facilities, manufacturing plants and other large-span structures with complex cladding profiles are handled through our Drone Technical Survey service, which provides detailed facade condition data, penetration mapping and substrate integrity classification. This is appended to the on-site structural survey under the same instruction. PPA pipelines that include mixed property types: commercial, industrial and residential: are managed as a unified batch programme.

A Technical Advisor (TA) or Independent Technical Advisor (ITA) is appointed by the lender to review the technical due diligence pack for the PPA transaction. The structural survey is one input into the TA’s review: the TA assesses whether the structural documentation satisfies their lender’s requirements for drawdown. Solar Surveys produces structural reports in a format that is designed to satisfy TA requirements directly, with consistent Eurocode load calculations, engineer sign-off and report structure across every site in the portfolio.

A conditional pass determination means the desktop assessment has identified a specific issue that cannot be resolved remotely. The condition is stated precisely in the report: for example, confirmation of purlin gauge required, or verification of roof deck substrate needed. Solar Surveys escalates conditional sites automatically to the on-site survey team, with 24-hour engineer mobilisation target and report delivery within 48 hours of site visit. The conditional site is tracked on the same programme schedule as pass sites, preventing it from becoming a separate follow-up item. See On-Site Structural Surveys for the full escalation scope.

For PPA portfolio transactions, Solar Surveys provides a consistent documentation pack for every site: engineer-signed Desktop Structural Roof Loading Report or on-site structural survey report, Eurocode load calculations, pass or conditional determination, and professional indemnity confirmation for the signing engineer. Across a portfolio batch, the report format, calculation basis and sign-off chain are standardised, simplifying the TA review process at financial close. Volume portfolio pricing and programme management are available for PPA providers with recurring pipeline requirements.

For Desktop Structural Roof Loading Reports, the delivery benchmark is 48 hours from receipt of instruction, at any batch size. For on-site structural surveys where drawdown is time-critical, Solar Surveys targets engineer mobilisation within 24 hours of instruction with reports delivered within 48 hours of site visit. For PPA providers with pipeline batches requiring parallel processing across multiple sites, programme management ensures every site progresses simultaneously rather than sequentially.