Key Features

• Comprehensive Exergy Analysis: Calculate physical and chemical exergy, perform component-level and system-wide analysis.

• Flexible Integration: Compatible with multiple simulation tools (Ebsilon Professional, Aspen Plus, TESPy).

• Advanced Component Library: Pre-built components for common energy system elements (turbines, heat exchangers, etc.).

• Extensible Architecture: Easy-to-use framework for implementing custom components and analysis methods.

• Robust Data Handling: Consistent fluid property models and automated data extraction from simulation tools.

• Open Source: MIT licensed, free for academic and commercial use.

Getting Started

pip install exerpy

from exerpy import ExergyAnalysis

model_path = 'my_model.json'

ean = ExergyAnalysis.from_json(model_path, chemExLib='Ahrendts')

fuel = {"inputs": ['Fuel'], "outputs": []}
product = {"inputs": ['Power'], "outputs": []}

ean.analyse(E_F=fuel, E_P=product)
ean.exergy_results()

from exerpy import ExergyAnalysis

model_path = 'tespy_model_export.json'

ean = ExergyAnalysis.from_tespy(model_path, chemExLib='Ahrendts')

fuel = {"inputs": ['Fuel'], "outputs": []}
product = {"inputs": ['Power'], "outputs": []}

ean.analyse(E_F=fuel, E_P=product)
ean.exergy_results()

from exerpy import ExergyAnalysis

model_path = 'my_model.ebs'

ean = ExergyAnalysis.from_ebsilon(model_path, chemExLib='Ahrendts')

fuel = {"inputs": ['Fuel'], "outputs": []}
product = {"inputs": ['Power'], "outputs": []}

ean.analyse(E_F=fuel, E_P=product)
ean.exergy_results()

Citation

If you use ExerPy in your scientific work, please consider citing it to support ongoing development. You can cite ExerPy using the following BibTeX entry:

@software{ExerPy,
     author = {Tomasinelli, Sergio and Witte, Francesco and Müller, Robert},
     title = {{ExerPy}: Exergy Analysis in Python},
     note = {Supervision: Prof. Dr.-Ing. Fontina Petrakopoulou}
     url = {https://github.com/oemof/exerpy},
     version = {0.0.9},
     year = {2026}
}

License

MIT License

Copyright (c) Sergio Tomasinelli

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.