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Due Diligence

UL offers comprehensive due diligence services to help you make sound investments in the future of solar and wind energy.

Sunrise on a solar and wind farm

Leading solutions for renewable energy due diligence

Understanding and mitigating the risks associated with renewable energy projects is critical for developers, lenders and investors alike. As one of the world’s leading and most experienced renewable energy technical advisors, UL provides comprehensive, flexible and timely due diligence services for the wind and solar industries.

UL’s team of engineers and technical advisors will assist you in preparing your project for financing, mitigate risk and help ensure it is technically sound and ready for construction. As your independent engineer, UL experts apply technical and commercial expertise to address project risks and propose mitigation, making financial close as smooth as possible. With our reputation with some of the world’s leading arrangers and lenders, Our technical experience and understanding of the intricacies of project finance to proactively evaluate projects make us an ideal partner.

Tailored solutions for wind and solar facilities

Investing in a renewable energy project or portfolio is a complex endeavor requiring an extensive evaluation effort. Understanding the inherent technical risks of a project is a critical facet of this effort, and the conclusions of this evaluation allow you to determine if the return is worth the risk. 

From energy resource and technology reviews to balance of plant and operations and maintenance (O&M) reviews, we leverage our experience on every wind and solar project we evaluate. UL’s industry experts have played an active role in many of the world’s most important and groundbreaking renewable energy projects. This experience is important, but equally core to our company is our reliability. 

With significant investments in play, you can’t afford to have questions go unanswered. Our teams work with you and maintain regular communication as we evaluate your project, and our global presence mean that help is always close by.

Independent engineering for an objective review

We support developers and lenders in their evaluation of technologies and projects for debt and equity investments. Our independent engineering reviews deliver objective information from a full scope of services needed to identify and mitigate the possible risks in wind and solar projects. Our solid reputation and global bankability in the renewable energy industry has been built on experience, quality and transparency, and our track record reflects the trust that lenders have placed with us to help ensure project viability and profitability. IE reports can include:

Project overview

  • Site layout
  • Initial site visit

Technology review

  • Solar site suitability

Energy production report

  • Energy production report summary
  • Energy loss review

Balance of system design review

  • Foundation and geotechnical design review
  • Electrical design review

Construction monitoring

  • Progress report review
  • Construction drawdown verification
  • Construction monitoring site visits

Third-party curtailment and congestion summary

  • Contracts review
  • Power purchase and hedge agreements
  • Interconnection agreements
  • Equipment supply agreements
  • EPC contract/balance of system contracts
  • EPC performance guarantee
  • Schedule and scope agreements
  • O&M and asset management contracts
  • Shared facilities and co-tenancy agreements

Environmental and permitting

Financial assessment

  • CAPEX review
  • Operating assumptions review
  • OPEX forecast

Technical advisory to guide your renewables due diligence

From a small equity stake in a single project to the acquisition of a global project portfolio, different investments require different levels of review. UL offers guidance on the best path for due diligence and identifies critical risks. Our project evaluation strategies are adaptable for the specific nature and size of your project.

Energy resource

  • Pre-construction energy production estimate and P-tables
  • Operational energy production estimate and P-tables
  • Third-party review of pre-construction energy estimate
  • Review of preliminary layout
  • Site inspection and review (environmental, jurisdictional, other)

Warranty and O&M review

  • EPC contractor agreement (equipment supply and performance guarantee)
  • O&M agreements
  • OPEX costs

Technology and system design

  • Technology review (modules, inverters, mounting structures and system integration)
  • Equipment suitability assessment based on climate conditions
  • Assessment of extended project lifetime (technical failure risk, longevity, contract extension review and O&M projections)
  • Balance of system (BOS) design
  • Civil and geotechnical review
  • Electrical design review

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