semPower allows for performing compromise, a priori, and post hoc power analyses for structural equation models. At least version 6.0 of the Java Runtime Environment has to be installed on the target machine. The latest version of the Java Runtime Environment can be downloaded free of charge from

Please send questions/comments/suggestions to moshagen[at]

For more details on using compromise power analyses in model testing, see:

Moshagen, M., & Erdfelder (in press). A new strategy for testing structural equation models. Structural Equation Modeling.


  semPower for Linux (~80 KB)

  semPower for Mac (~300 KB)

Note: If the above file refuses to start, please download semPower as plain jar file from this link.

  semPower for Windows (~1.5 MB)


You may use semPower free of charge for academic and personal use. If you want to use semPower for commercial applications, you need to contact the author. Although considerable effort has been put into program development and evaluation, there is no warranty whatsoever.