Long-term Statistics for your onshore site within a day
For any terrain type, worldwide,
however complex, in familiar file formats
Whiffle Wind Statistics
Our Statistics are based on Large-Eddy Simulation and therefore include all site-specific wind flow dynamics
Data precision you can rely on
Our LES model achieves a typical bias lower than 36% compared to meso-scale models*, due to its high-resolution modelling capabilities.
* Comparing error statistics of 125 sites with NEWA data.

A full-physics simulation
Model the wind climate under real atmospheric conditions, while accounting for terrain effects forests, hills, mountains, and coastal terrain – no assumptions, just physics.

Cost-effective methodology
On-demand 100-meter WRGs for areas up to 128 km x 128 km. Our smart-day-selection algorithm guarantees long-term representativeness for a very competitive price.

Quick turnaround
Our LES model is GPU-resident and therefore historically fast. This means you will receive your WRG and other statistical results within 24 hours for a maximum of 2 simultaneous requests.

Technology trusted by industry leaders







Run simulations for your site, in just a few clicks.
Depending on project size, results are delivered within 6 to 24 hours.
Step 1: Provide
Input your project details, turbines and met masts, and draw the LES area (same as WRG area) in our user interface.
Step 2: Submit
Review the output settings, the simulation setup and price, then submit for processing.
Step 3: Retrieve
Explore the results dashboard with wind, power and turbulence statistics.
Sign up now for a free trial to get LES Statistics, including a long-term representative WRG for a site of choice up to 13 by 13 kilometers.
Customizable outputs that fit into your current workflow

Elaborate Statistics metrics
- Receive up to 6 WRGs in one run, to evaluate Weibull and Wind Rose characteristics at different heights
- Inspect long-term annual energy production and turbulence estimates, with or without wakes
Ready-to-Use Data
- Results delivered in WRG format for optimal compatability with tools like WindPRO and OpenWind
Clarity in pricing: Pay-Per-Run
Whiffle Wind Statistics is priced on a pay-per-run basis and depends mainly on the size of the area to simulate, and to a lesser extent on the complexity of your site. You’ll always see the exact price before submitting a run, ensuring transparency and predictability for your budgeting.
Domain size | Price estimate for 1 Statistics run |
---|---|
Small (12.8 km x 12.8 km) | € 940 |
Medium (51.2 km x 51.2 km) | € 3760 |
Large (128 km x 128 km) | € 9399 |
For larger or unique projects, we offer tailored consultancy services. Please contact us for more information.
Do you need time series data ?
Whiffle Wind delivers high-resolution, wind and power time series data for digital twin modeling of your onshore turbines and met masts. Outputs are provided at all specified turbines and met mast locations and heights and include wind speed, direction, shear, and turbulence data. Gridded time series output for up to three horizontal planes of the entire LES domain can also be included.
Whiffle Wind is powered by the Whiffle LES model
Whiffle Wind leverages Whiffle’s physics-based, LES technology to accurately simulate real-weather conditions and capture fine-scale atmospheric dynamics. This ensures reliable wind statistics, even in the most complex onshore environments.
Frequently Asked Questions
What is LES?
Large Eddy Simulation (LES) is a Computational Fluid Dynamics (CFD) model for resolving turbulence and is gaining increased attention in the wind energy sector. The benefits of LES to model the wake and global blockage effects of wind farms lie in the fact it can model the interaction between wind farms and the atmospheric boundary layer (ABL). A recent overview on various aspects of the atmospheric flow through wind farms is presented in Stevens and Meneveau’s 2017 paper: Flow Structure and Turbulence in Wind Farms, volume 49.
Are wakes and blockage included?
Yes. LES physically models the phenomena of wind, pressure and atmospheric stability and their interaction with wind turbine-induced wake and blockage effects. Therefore, we don’t have to rely on non-physical/empirical correction factors for example blockage effects and deep-array effects
Are external wind farm effects included?
By default, external wind farms are not included in the simulation. However, external wind farms can be added to the simulation; then their effects on the target wind farm will be modelled and included. If you wish to have additional analysis of external effects, you may want to consider making use of Whiffle’s Consulting service. For more information, feel free to send an email to info@whiffle.nl.
In Whiffle Wind, can I run multiple simulations in parallel?
Yes, Whiffle Wind allows you to run multiple configurations and scenarios efficiently, providing fast results for different project designs or turbine layouts.
Does Whiffle Wind account for forest canopy effects?
Yes, Whiffle’s LES model accurately captures forest canopy impacts, including height and density, making it ideal for onshore projects in forested areas.
What is the uncertainty of Whiffle Wind’s AEP prediction?
Using SCADA data of wind farms, it is possible to make ex-post assessments of Annual Energy Production (AEP) predictions. Based on a small (N ≤ 10) sample of wind farms that Whiffle has modelled, we estimate the mean error of AEP predictions are around 2% (Whiffle’s model tends to underpredict AEP) with a standard deviation of 4%. These numbers are based on raw output from Whiffle Wind without any long-term correction or correction of mean wind speed biases. Therefore, this number represents not only errors in aerodynamic losses, but also errors in the mean wind speed.
What is the largest domain that can be simulated?
Currently a 90 km x 90 km domain is the largest. However, we’re working hard to make this even larger! If you need a larger domain, certainly feel free to contact Whiffle’s Consulting service via info@whiffle.nl.
What is the resolution and why?
The default resolution of our LES is 100 m x 100 m in the horizontal plane, 25 m vertically close to the ground. Our LES has been extensively validated on a wide range of sites (onshore, offshore, complex terrain) and wind farms for this resolution and provides the best trade-off between cost and accuracy.
If you require other resolutions, please consider Whiffle’s Consultancy service which can be contacted via info@whiffle.nl.
How long will it take for the simulation to run?
This depends on the domain size and length of the simulation, as well as how many other simulations have been requested and are in the queue. As a rough guideline, generally a one-day simulation should be available the next day or sooner, and generally a full year simulation should be available the next week or sooner.
How do I get started with Whiffle Wind?
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