Maximilian Parzen
CEO And Co-Founder at Open Energy Transition
Berlin, Germany
Summary
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Rockstar🎓
Top SchoolMaximilian Parzen is a PhD-trained energy systems engineer and entrepreneur who co-founded Open Energy Transition and co-directs the global PyPSA meets Earth initiative, combining open-source software, open data and practical consulting to accelerate affordable, sustainable power systems. Based in Berlin, he brings six years of hands-on experience shipping and maintaining backend components of flagship open models like PyPSA and PyPSA-Eur, with notable contributions to solver support, hydro processing and system architecture. As CEO he pairs product leadership with technical depth—authoring reproducible workflows, improving solver robustness (including CBC and Highs) and guiding community-led research. He has a track record of translating research-grade tools into usable planning software and commercial services, and an unusual blend of startup, consultancy and legacy-industry experience from Porsche to TenneT.
6 years of coding experience
1 year of employment as a software developer
Doctor of Philosophy - PhD Engineering, Doctor of Philosophy - PhD Engineering at The University of EdinburghBachelor of Engineering (B.Eng.) Energieprozesstechnik, Bachelor of Engineering (B.Eng.) Energieprozesstechnik at Technische Hochschule Nürnberg Georg Simon OhmBusiness Administration , Business Administration at University of Bayreuth
German, English, Croatian
Stackoverflow
148reputation
34kreached
2answers
1question
Github Skills (16)
data-analysis10
pypsa10
python10
data-processing10
osm-pbf9
osb9
energy-system9
geopandas9
snakemake8
pyomo6
mathematical-optimization6
linear-programming6
documentation6
gnu6
github5
Programming languages (9)
Github contributions (5)
pypsa-meets-earth/pypsa-earth
Feb 2021 - Jan 2023
PyPSA-Earth: A flexible Python-based open optimisation model to study energy system futures around the world.
Role in this project:
Back-end Developer & Data Scientist
Back-end Developer & Data ScientistContributions:4 releases, 241 reviews, 630 commits in 1 year 11 months
Contributions summary:Maximilian focused on implementing features and data processing capabilities to support the PyPSA-Earth model. Their contributions involved creating an ISO country code dictionary, exploring data in the data exploration folder, and adding functionality for a global extraction script, and the use of earth-osm and data from the web. Furthermore, the user was involved in adding improvements for the hydro processing.
power-systemsoptimisation-modelearthpypsa-africasimulation
PyPSA/PyPSA
Mar 2021 - Nov 2022
PyPSA: Python for Power System Analysis
Role in this project:Back-end Developer
Back-end DeveloperContributions:19 reviews, 61 commits, 11 PRs in 1 year 8 months
Contributions summary:Maximilian primarily focused on bug fixes and improvements related to the `cbc` solver within the PyPSA framework. They addressed issues with constraint handling ('>' and '<' operators) by modifying the code to use '>=' and '<=' respectively. Their contributions involved modifying the `linopt.py` file, adding documentation, and including an assert function for the `cbc` solver. Furthermore, they added support for the `highs` solver.
pythonpyomosnl-applicationsrenewablespowerflow
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