DEWI GmbH - Deutsches Windenergie Institut
Energy Yield Assessment (EYA)
DEWI offers comprehensive EYA service, from large-scale wind potential determination using Mesoscale modelling to accurate assessment of the site conditions, including calculation of the expected energy yield at specific wind farms at pre-/postconstruction stage. The suitability of the planned wind turbine type to the site characteristics and correspondence to the IEC 61400-1 norm is checked via DEWI’s site classification assessment. Pre-Construction Stage- Site Inspection
- Wind data analysis from mast and remote sensors (SODAR/LiDAR)
- Long-term correction of the on-site available data
- Wind flow modelling (WASP/CFD)
- Wind farm efficiency calculation
- Calculation of the expected energy yield (gross p50) under consideration of systematical losses (net p50) and the respective uncertainties and exceedance probabilities (p75, p90, p99 values)