The European Wind Energy Association (EWEA) benchmarked the skills of the wind power industry and academia four times from 2011 to 2015 in the so-called Comparison of Resource and Energy Yield Assessment Procedures (CREYAP) initiative. Teams from all over the world were invited by EWEA to perform wind resource and energy yield assessments based on the same reference data sets; including predicting the actual, annual energy production of a given wind farm.
DTU Wind Energy carried out the analyses of the submitted results and have presented the results and conclusions at several international conferences and workshops. The list below contains links to more than 10 presentations and papers that may be downloaded free of charge from DTU Orbit. The WAsP software and models were abundantly represented in all four exercises.
Land-based wind farms, Part 1 and 2
Mortensen, N. G., & Ejsing Jørgensen, H. (2011). Comparison of resource and energy yield assessment procedures. EWEA Wind Resource Assessment Technology Workshop, Brussels, Belgium, 10-11 May.
Mortensen, N. G., Ejsing Jørgensen, H., Anderson, M., & Hutton, K-A. (2012). Comparison of resource and energy yield assessment procedures. EWEA 2012, Copenhagen, Denmark, 16-19 April.
Mortensen, N. G., & Ejsing Jørgensen, H. (2013). Comparative Resource and Energy Yield Assessment Procedures (CREYAP) Pt. II. EWEA Technology Workshop: Resource Assessment, Dublin, Ireland, 26 June.
Anderson, M., & Mortensen, N. G. (2013). Comparative Resource and Energy Yield Assessment Procedures (CREYAP) Pt. II. AWEA Wind Resource & Project Energy Assessment Seminar, Las Vegas, United States, 10-12 December.
Mortensen, N. G., Ejsing Jørgensen, H. & Nielsen, M. (2014). How well can the industry predict the wind resources? Overview of the results from EWEA CREYAP exercises. Danish Wind Industry Annual Event 2014, Herning, Denmark, 26-27 March.
Offshore wind farms, Part 1 and 2
Mortensen, N. G., Nielsen, M., & Ejsing Jørgensen, H. (2013). First Offshore Comparative Resource and Energy Yield Assessment Procedures (CREYAP). EWEA Offshore 2013, Frankfurt, Germany, 19-21 November.
Mortensen, N. G., & Nielsen, M. (2015). Offshore CREYAP Part 2 – preliminary results. EWEA Offshore Conference 2015, Copenhagen, Denmark, 10-12 March.
Mortensen, N. G., & Nielsen, M. (2015). Offshore CREYAP Part 2 – final results. EWEA Technology Workshop, Helsinki, Finland, 2-3 June.
Mortensen, N. G., Nielsen, M., & Ejsing Jørgensen, H. (2015). EWEA CREYAP benchmark exercises: summary for offshore wind farm cases. Wind Energy Denmark 2015, Herning, Denmark, 22-23 September.
Summary paper and presentation at EWEA 2015
Mortensen, N. G., Nielsen, M., & Ejsing Jørgensen, H. (2015). Comparison of Resource and Energy Yield Assessment Procedures 2011-2015: What have we learned and what needs to be done? EWEA 2015, Paris, France, 17-20 November. Presentation