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GOPEM is a graphical user interface of OPEM

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GOPEM is a graphical user interface of OPEM (Open Source PEM Fuel Cell Simulation Tool).

Branch master develop
Code Quality CodeFactor


Source Code


Exe Version (Only Windows)

⚠️ The portable build is slower to start

Exe Version Note

For GOPEM targeting Windows < 10, the user needs to take special care to include the Visual C++ run-time .dlls: Python >=3.5 uses Visual Studio 2015 run-time, which has been renamed into “Universal CRT“ and has become part of Windows 10. For Windows Vista through Windows 8.1 there are Windows update packages, which may or may not be installed in the target-system. So you have the following options:

  1. Use OPEM (Without GUI)
  2. Use Source Code
  3. Download and install Visual C++ Redistributable for Visual Studio 2015

System Requirements

GOPEM will likely run on a modern dual core PC. Typical configuration is:

  • Dual Core CPU (2.0 Ghz+)
  • 2GB of RAM

⚠️ Note that it may run on lower end equipment though good performance is not guaranteed.



Screenshot 1

Screenshot 2

  • Open CMD (Windows) or Terminal (UNIX)
  • Run gopem or python -m gopem (or run GOPEM.exe)
  • Wait about 4-15 seconds (depends on your system specification)
  • Enter PEM cell parameters (or run standard test vectors)
  • For more information about parameters visit OPEM (Open Source PEM Fuel Cell Simulation Tool)

Issues & Bug Reports

Just fill an issue and describe it. We'll check it ASAP! or send an email to

You can also join our discord server

Discord Channel



If you use OPEM in your research , please cite this paper :

  doi = {10.21105/joss.00676},
  url = {},
  year  = {2018},
  month = {jul},
  publisher = {The Open Journal},
  volume = {3},
  number = {27},
  pages = {676},
  author = {Sepand Haghighi and Kasra Askari and Sarmin Hamidi and Mohammad Mahdi Rahimi},
  title = {{OPEM} : Open Source {PEM} Cell Simulation Tool},
  journal = {Journal of Open Source Software}

Download OPEM.bib(BibTeX Format)

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Zenodo DOI

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Donate to Our Project

If you do like our project and we hope that you do, can you please support us? Our project is not and is never going to be working for profit. We need the money just so we can continue doing what we do ;-) .

OPEM Donation


All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog and this project adheres to Semantic Versioning.


0.8 - 2024-03-16


  • feature_request.yml template
  • config.yml for issue template
  • Discord badge
  • Console scripts entry point


  • Bug report template modified
  • modified
  • Python 3.10 added to test.yml
  • Python 3.11 added to test.yml
  • Python 3.12 added to test.yml
  • Logo updated
  • updated
  • Test system modified
  • Setup system modified
  • Docstrings modified
  • check_update function modified

0.7 - 2021-08-18


  • Chakraborty model


  • Test system modified
  • Import section updated

0.6 - 2020-03-16


  • __version__ variable


  • Test system modified
  • dev-requirements.txt modified
  • requirements.txt modified
  • Logo updated
  • Icon updated
  • updated
  • modified
  • modified
  • build_exe.bat modified
  • modified

0.5 - 2019-10-28


  • build_exe.bat
  • GOPEM.iss
  • Check update button
  • Save plot button
  • Report generating controller
  • Console print controller
  • PyPI package


  • modified
  • modified
  • Test system modified
  • Menu bug in Windows fixed
  • Padulles-Amphlett model default test case bug fixed
  • Docstrings modified
  • Report default location bug fixed
  • Icon bug fixed

0.1 - 2018-09-10


  • GUI and plotter
  • Use same test data as OPEM lib
  • Documents and README

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