Wind Atlas

Atlasfilm D-3km-Atlas

Our temporally and spatially high resolved time series of the fundamental meteorological parameters as well as various derived products assist you with cost-effectively answering questions in all phases of planning and operating your wind farm.

Our wind atlases are based on temporally and spatially coarse resolved reanalysis data (e.g. MERRA2 or NCEP). Additionally, detailed information of land use and orography are used in the model simulation. High resolved time series for a time period of more than 20 years are derived by downscaling the coarse reanalysis data with the mesoscale models WRF or MM5.

The quality of the anemos Wind Atlases is proved by a continuous validation with wind and energy yield data. Based on this verification, a remodelling approach for the new Germany 3-km Atlas (D-3km.M2) was invented in order to adapt the wind atlas to observational data.

By means of the remodelling and the adjustment of the time series, we are able to generate site-specific time series. Thereof, all our products based on the atlas benefit, e.g.: wind and energy yield index, long-term correlation, energy loss calculation and market value analysis.

Further information on the verification and remodelling is available for download (German).

Overview of our anemos Wind Atlases

Atlas name Region Reanalysis Resolution Time period Model
Germany MERRA-2 3 km* / 10 min 1997 - up to date WRF
D-3km Germany MERRA 3 km / 10 min 1995 - 2015 WRF
D-5km Germany NCEP 5 km / 30 min 1990 - up to date MM5
EU-20km.M2 Europe MERRA-2 20 km / 10 min 1990 - up to date MM5
EU-90km Europe NCEP 90 km / 3 h 1948 - up to date MM5
France, Belgium,
MERRA-2 3 km* / 10 min 2014 - up to date WRF
PL-3km Poland MERRA 3 km / 10 min 1995 - 2015 WRF
PL-5km Poland NCEP 5 km / 10 min 1990 - up to date MM5

* site-specific time series available

Also, an overview of our most important wind atlases incl. their model grids is available via our atlas grid tool within the tab Webtools.

Time series

Power D3M2

Our high resolved and site-specific* time series („Virtual Met Mast“) provide you with reliable information on the wind conditions at your site for a fraction of the costs of a wind measurement.

We offer time series for various parameters: wind speed*, wind direction, temperature, air pressure, humidity, air density, global irradiance and precipitation. The heights are freely selectable between 40 m and 200 m.

The time series are used in diverse areas of operation:

  • initial estimation of the wind potential
  • long-term correlation of an existing measurement for a reliable result
  • input data for model simulations (WAsP und CFD)
  • calculation of time-dependent losses (noise immission, bat flight, etc.)

The advantages of high resolved time series over global reanalysis data are variegated and are referred to in this article.

* site-specific time series are available for the wind speed data of the atlases D-3km.M2 and F-3km.M2.

Your contact person

Julia Bethke

Julia Bethke
Tel.: +49 (0)4131 83 08-108


Power D3M2

Our maps of different parameters assist you with the choice of the site, the selection of an adequate WTG type and with a first evaluation of the site quality.

The following maps are currently on offer.

  • wind potential map, also Weibull parameters and wind rose available
  • icing map for Gemany and France (NEW!)
  • map of gross site quality, also consideration of overall losses possible(NEW!)
  • map of 50 years' extreme wind speed
  • Market Value Atlas

On request, we are happy to generate maps adjusted to your needs.

The maps are available in different formats: jpg, ESRI Shape, Google Earth KML or online. Together we determine the appropriate format for your purpose.

Your contact person

Martin Schneider

Martin Schneider
Tel.: +49 (0)4131 83 08-109

Initial estimation

A site-specific* initial estimation based on our anemos Wind Atlases assists you with the decision for the correct measurement location. Furthermore, a preliminary estimation can form the basis for turbulence calculations and it allows you to compare different WTG types.

Our initial estimation for your site contains:

  • mean wind speed and optionally mean energy yield (20 years)
  • frequency distribution of wind speed and wind direction
  • directional Weibull distribution (12 sectors)
  • annual cycle of wind speed and optionally energy yield
  • optional consideration of wake effects plus further losses
  • .tab file for application in WAsP, WindPRO, Meteodyn, etc.

* site-specific estimation for Germany and France available; for other regions, the spatial resolution of the corresponding wind atlases applies

Your contact person

Julia Bethke

Julia Bethke
Tel.: +49 (0)4131 83 08-108

Production atlas

energy yield Germany 3km.M2Do you need a quick estimate of energy yield for diverse specific wind turbine generators?

Our anemos production atlas calculates the energy yields with your given power curves and hub heights. Therefore, the production atlas allows a comparison between different WTG technologies. Plus, it is a tool for selecting a suitable wind farm site or for expanding your portfolio.

Gladly, we generate wind farm specific production time series for you which consider your given wind farm configuration and losses.

You receive the production data either as site-specific* time series or as map(s) of the mean energy yield of the last 20 years; now available with 90 m x 90 m resolution (for Germany and France)!

Your contact person

Martin Schneider

Martin Schneider
Tel.: +49 (0)4131 83 08-109

Energy yield index (site- and turbine-specific)

Ertragsindex DeutschlandOur wind atlases are the basis for the anemos Energy Yield Indexes. The time series of wind speed and air density are combined with the WTG power curve to provide temporally high resolved energy yield time series. We define the mean energy yield of the last 20 years as 100 % level. Afterwards, we obtain the monthly energy yields and calculate a monthly energy yield index for diverse WTG types and hub heights. This index refers to the gross energy yield without losses and consequently, it is an indication for the wind potential and the gross energy yield potential.

By default, you receive our energy yield index for five typical WTG. Gladly, we generate a turbine-specific index with your WTG types and hub heights. In the same way, it is possible to calculate a site-specific index with your given wind farm configuration and losses.

The anemos Energy Yield Index is an essential addition or alternative to the BDB-Index (IWET-Index) which was a norm for many years in Germany. Although the variegated problems with use of the BDB-Index are known, it is still applied in many cases.

More information about the BDB-Index is available in the following papers (German):

"IWET / BDB Ertragsindex - quo vadis ?" (01.05.2015) and "Immer noch IWET?" (15.05.2017).

Your contact person

André Glücksmann

André Glücksmann
Tel.: +49 (0)4131 83 08-110

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