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What is greenventory?

Greenventory is a high-tech startup from Freiburg, which has made it its mission to realize the energy transition in the cities.

For this purpose, we accompany our customers with our experience in the public sector, provide an in-depth data basis for a well-informed decision-making process and enable forward-looking planning of energy systems.

Know-how and clever minds

We are a dedicated team of scientists and engineers who enjoy data and the simulation and optimization of energy systems

Software for the energy transition

greenventory offers a software-based solution for inventorying and analyzing distributed energy systems. For this purpose, a large number of data sources are brought together, evaluated and a building-specific data basis for the energy system is built up. Based on this, options for action can be evaluated transparently and future development paths can be explored.

Passion for energy

We have the scientific background on the data, the environmental conditions and on energy transition. At the same time our understanding of people and their needs is as well decisive in our projects. This is how we jointly achieve future-oriented results.

We empower people of action with the data and tools they need to design the transition towards sustainable energy.

See What We Do

With the software solution created by greenventory, utilities, network operators and cities can individually map, analyze and improve their energy system.

Our Services

Inventory of your energy system

From hundreds of data sources, we capture the status quo and deliver what you need for your job.

Data-driven decision support

We analyze your data, create scenarios and plan the future of your energy system.

Transparency and potential

With our software for the municipal energy transition and heat planning, you get full transparency on how to realize the local energy transition.
This enables you to identify clear goals, engage and inspire citizens, and convince key stakeholders with targeted measures.

Custom projects

We will contribute with our expertise in the collaboration with you to develop a tailor-made solution for your challenge. Here are some highlights of our range of services.

Your advantages

More projects in the same time

We organize you a data acquisition by a click. We have already integrated many important analyzes and calculations for your next planning steps.

Transparency and enthusiasm

With our interactive and easy-to-understand visualizations along with the practical export of the results you communicate in a transparent and convincing manner.

Holistic view

We create analysis, scenarios and concepts. They are always across sectors with a holistic view and with in-depth quality and databases.

Sustainable energy systems

We support you in identifying projects, in reaching climate targets and in optimizing your energy system.

Want to join our team?

We are currently looking for support in the following areas:

  • UX/UI designers
  • Full stack developers
  • Software engineers

Is a master thesis pending? We are always happy to welcome new master’s students to our team!

Simply send us your application documents with a concise description of your motivation to: [email protected]. Your contact person is David Fischer.

None of this fits exactly? Nevertheless, you are welcome to send us an unsolicited application.

Applications can also be sent via JOIN sent!

Our supporters

Do you want to drive forward the energy transition? Then join our team in one of the following positions

Join Us

Let us talk

Exciting projects? Questions?
Want to join our team?

The Founders

Dr.-Ing. Sven Killinger

Founder, Commercial Director


Dr.-Ing. Sven Killinger

Founder, Commercial Director

Doctorate in industrial engineering Energy industry expert Senior Scientist Fraunhofer ISE

Dr. David Fischer

Founder, Technical Director


Dr. David Fischer

Founder, Technical Director

Energy technology expert Expert in energy informatics Senior Scientist Fraunhofer ISE

Dr.-Ing. Kai Mainzer

Founder, Head of R&D


Dr.-Ing. Kai Mainzer

Founder, Head of R&D

Expert Geoinformatics Optimization procedures and AI Group Leader Renewable Energies KIT