Concept-e helps SMEs to find the right energy system - data-based, independent and easy to understand.
What is your idea about?
Concept-e analyses a company's energy profile, uses software to objectively compare different technologies (photovoltaic, heat pump, battery, etc.) and calculates the best combination solution. The result is a customised energy concept that really fits, saves costs and reduces emissions. SMEs are supported throughout the entire process - including during implementation.
What does Concept-e offers you?
As an independent partner, Concept-e checks offers, handles negotiations with service providers and ensures that companies make the right technical and economic decision. Step by step - clear, well-founded and transparent.
How did you get together as a team?
The idea for Concept-e began with a Master's thesis: Joel worked intensively
on renewable energies and developed a mathematical model to optimise energy
systems. What began as research became a vision - and from April 2022 he
consistently pursued it.
In March 2023, Jil joined him - not just as a sister, but as a strategic
counterpart with experience in communication, brand management and structure.
The idea was there, the software was already conceived at its core - but the
rebranding, the external impact and the strong communication structure were
missing.
Pia joined the team in May 2023: fresh from a software development bootcamp,
recommended by another start-up - and quickly became indispensable. With
technical depth, analytical thinking and a lot of passion, she brought the
concept to life.
Dr Marie Ossenkopf joined the team as an advisory Founding Partner in September
2024. With her scientific expertise in the field of artificial intelligence and
her experience in software development and automation, she supports Concept-e
both in terms of content and strategy. She not only contributes technical
know-how, but also promotes the further development of the team and the
organisation through workshops on topics such as team structure and OKRs.
Four perspectives, one common goal: rethinking energy concepts - well-founded,
holistic, sustainable.
What are you studying/working or what have you studied?
Joel Rogawski - M. Sc. Industrial Engineer Mechanical Engineering Energy Technology, Certified energy consultant
Pia Hildebrandt - B. Sc. Industrial Engineer Mechanical Engineering RWTH Aachen, Full-Stack Developer Barcelona Code School
Jil Rogawski - B.A. Media- and Eventmanagement HMKW Köln, Management Assistant for Marketing Communication
Dr. Marie Ossenkopf - Dr. rer.nat., Computer Science University of Kassel, M. Sc. automation technology, B. Sc. Mechanical Engineering RWTH Aachen
Funfacts
Fun facts are shared every morning at the Daily Check-In. From crazy animal facts to nerd hacks, everything is included..
What has Gateway ESC helped you with?
The Gateway has played a crucial role in supporting us on our journey with
Concept-e – especially in successfully applying for the EXIST start-up grant,
which enabled us to financially kick off the implementation of our idea.
In addition, we greatly benefit from the ongoing exchange with the coaches:
whether it's about strategy, scaling, or legal questions – we can reach out
anytime and receive honest, hands-on feedback.
A real highlight for us is the workspace – an inspiring environment that not
only provides space to work but also creates real momentum through proximity to
other start-ups and regular supervision. It's a place where people with similar
challenges but completely different ideas come together – which is both
motivating and broadens our perspective.




