| 08 Oct 2026
What matters for wind farm layout optimization? An assessment based on the effective layout distance
Abstract. Wind farm layout optimization is one of the main phases of offshore wind farm design and involves a wide range of implementation choices, spanning aspects such as flow modeling, data selection, and objective definition. This study quantifies the impact of 18 different implementation choices across 9 categories on the results of wind farm layout optimization. The comparison is performed using both a conventional approach based on performance metrics and the concept of effective layout distance, a novel metric introduced to measure differences between sets of layouts based solely on turbine positions. The results show that the hyperparameter values of the optimization algorithm, the choice of wake model, the use of cost of valued energy as objective, and the adoption of a control co-design approach have a high impact on the optimal layouts and therefore require careful consideration during problem formulation. In contrast, choices such as rotor averaging models and the use of revenues based on varying electricity prices as objective have a negligible effect on the resulting layouts and can therefore be selected based on simplicity and computational efficiency.
Competing interests: At least one of the (co-)authors is a member of the editorial board of Wind Energy Science.
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The manuscript investigates how implementation choices affect wind farm layout optimization, considering 18 configurations across 9 categories and comparing their outcomes through both performance metrics and a spatial indicator termed effective layout distance.Â
The study has several strengths. Repeated optimization runs acknowledge the stochastic and multimodal nature of the problem, cross-evaluation avoids relying exclusively on the reference performance model, and the layout-field maps help reveal broad spatial trends that scalar economic or energy indicators may conceal. The systematic assessment across different categories is potentially useful, and the provision of a code and data archive is very good for reproducibility.
I recommend minor revision. In the following some comments:
- page 8 line 201 there is a typo, the word 'the' is repeated twice namely as the the effective layout distance
-page 18 line 374 σ = 5,D, the first comma is not necessary
-page 31 line 637 there is a typo in the DOIÂ
-I would suggest to better clarify how the computational time reported in Figure 3 were obtained
-lines 325-328, is the reduction in multimodality just a possible interpretation? Please clarify that.