A blade element momentum method for analyzing wind turbine aerodynamic performance that is robust (guaranteed convergence), fast (superlinear convergence rate), and smooth (continuously differentiable). Analytic gradients are also (optionally) provided for the distributed loads, thrust, torque, and power with respect to design variables of interest.

Author: NREL WISDEM Team


See local documentation in the docs-directory or access the online version at


pyMAP requires a Fortran compiler


For detailed installation instructions of WISDEM modules see or to install CCBlade by itself do:

$ python install

Run Unit Tests

To check if installation was successful, run the unit tests

$ python test/
$ python test/

For software issues please use For functionality and theory related questions and comments please use the NWTC forum for Systems Engineering Software Questions.

Wind and Water Tools:

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NWTC Information Portal (CCBlade). Last modified 21-September-2014 ; Accessed 05-April-2020