Due Diligence

Review of existing site assessment studies

For a wind farm project in its planning phase it is often necessary to review the existing site assessment studies and energy yield calculations. anemos compares the given reports in detail and prepares a review report in consideration of the requirements of the German Technical Guideline 6 (“TR 6”) and other relevant guidelines.

The focus of the comparison and plausibility check is on the following aspects:

comparison of all given coordinates, turbine types, power and thrust coefficient curves, for the existing, the planned and the reference turbines
input data such as orography, roughness and obstacles
wind information (measurements, wind statistics, wind distribution, etc.)
methodology, simulation models
reference periods
long-term correlation
possible energy loss calculations caused by restrictions due to shade impact or sound emissions, bat flight or sector management
plausibility calculations
energy yield calculations, power curves, wind farm efficiency
uncertainty analysis
information on the wind volatility

In addition, anemos reviews and evaluates the reports and sites based on its own long-year experience. Thus, we go beyond the formal requirements of the Technical guideline. Own analyses and calculations are usually not part of the review, but can be agreed upon with the client on an individual basis.

Questions about this service or interested in a quote? Get in touch.

Evaluation of existing wind farms - Production-DD

The evaluation of existing wind farms is based on its production data, if those are available for a sufficient time. These are long-term correlated, in order to estimate the most probably mean long-year energy yield. As such an analysis is directly based on the energy production, most of the uncertainty aspects of a site assessment study can be avoided.