Technical Due Diligence of Wind Projects

Whether the wind farm is still in the planning stage or in operation, TÜV Rheinland puts together a customized due diligence service package that meets our individual customer’s needs.

Even though every wind project is different, and the technical due diligence service package is tailored to the customer’s specific needs, there are certain services and information that are the backbone of our TDD service package:

Documentation

The type of information and documents requested by our experts depends on the phase of the wind project, i.e. whether the wind project is in the design, construction and/or operation phase. Documents required include, but are not limited to, permit documentation, environmental impact assessment, energy yield calculation, site suitability assessment, main component load calculations, design certification, equipment supply agreements, EPC contracts, grid connection agreement, wind farm layout, etc.

Energy yield report

Energy Yield Report Yield assumptions are usually very optimistic at the project stage and are one of the issues we scrutinize most closely. This is why we provide independent energy yield forecasts, even for complex sites and worldwide. Our reports are recognized by the market and by the banks responsible for financing and insuring the various stakeholders in order to make appropriate investment decisions.

Documentation provided, along with site inspections, allow our experts to estimate the past performance and the current physical condition of the wind assets. Production reports and availability are the documents, among others, that support our study.

Our technical due diligence process verifies whether regular and scheduled maintenance and inspections have been carried out in accordance with the manufacturer's specifications and maintenance contracts. Operational reports, scheduled overhauls and repair history are the documents, among others, that support our study. This ensures that all preventative measures were taken to maintain the performance and integrity of the different assets.

By analyzing the current state of integrity of the assets and past and current operating conditions, our Pre-Check service, as part of our technical due diligence, provides a projection of the remaining service life of the wind turbines. This is critical for long-term planning and the economic valuation of the wind project.