Press Release Highly innovative energy concept for Berlin TXL

Dr. Karsten Wildberger, E.ON-Vorstand, Dr. Philipp Bouteiller, Geschäftsführer der Tegel Projekt GmbH, und Jörg Simon, Vorstandchef der Berliner Stadtwerke-Mutter Berliner Wasserbetriebe geben sich die Hand

05.11.2018 | Onlineredaktion Berlin TXL

Berliner Stadtwerke and E.ON to Cool and Heat the Urban Tech Republic and Schumacher Quartier

In the future, Berliner Stadtwerke and E.ON will supply Berlin TXL - The Urban Tech Republic in Berlin with cooling and heating using a highly innovative combination of environmentally friendly technologies. The bidding consortium was the winner of an EU-wide concession tender for the research and industrial park, which will be one of the largest urban development projects in Europe, on the site of today's Tegel Airport. The Schumacher Quarter, with its more than 5,000 apartments, which is also planned for the Tegel site, will also to be included in the energy concept.

The energy will be supplied via a new low-temperature network. This so-called LowEx network is operated at temperatures of up to 40 degrees Celsius. The lower operating temperature compared to a classic district heating network means that heat losses can be reduced. Furthermore, heat pumps installed for consumers can generate higher temperatures as well as cooling energy, if required. The LowEx network can absorb surplus or self-generated energy (e.g. production waste heat from the site's commercial and industrial operations or energy from renewable sources) and thus, at the same itme, turns the customer into a producer.

Because everything is generated, stored and consumed directly on site in a decentralized and sustainable way from a mix of combined heat and power plants, solar plants, geothermal energy and waste water heat, the network functions as an energy exchange point.

Philipp Bouteiller, Managing Director of Tegel Projekt GmbH, says: "The LowEx network is unique in the world on this planned scale. We are concerned here with the far-reaching possibilities of this new approach, which picks up on a central point of the energy turnaround; away from central energy generation towards citizen-oriented, decentralized, intelligent energy systems and modern neighborhood management.

"By 2050, Berlin wants to become a climate-neutral metropolis and push ahead with the energy revolution. Berliner Stadtwerke is a decisive engine of this development," says Jörg Simon, CEO of Berliner Wasserbetriebe, whose subsidiaries are the Berliner Stadtwerke. "As a municipal company, Stadtwerke, together with its partner E.ON, is implementing a forward- looking energy concept with a lighthouse character on a site that is important for Berlin. With the innovative LowEx network, we're showing how Berlin's energy system can be transformed into a district with a wide variety of uses."

"For Berlin, we will implement a solution characterized by low emissions and high climate protection," says E.ON Board Member Karsten Wildberger. "The award by the state of Berlin proves that climate-friendly solutions can also be economically viable if they are developed intelligently and innovatively. For us, it’s the first network of a completely new generation and an important step for the municipal energy turnaround. It is in this spirit that we will continue our cooperation with many cities and municipalities in Europe.”

About the Berlin TXL project

Six months after the opening of the new international airport BER, the Berlin-Tegel Airport will be closed. In the following years, a research and industrial park for urban technologies will be built on the site: Berlin TXL - The Urban Tech Republic and a new residential quarter: the Schumacher Quartier. The state of Berlin has commissioned Tegel Projekt GmbH with the development and management of both projects. Their tasks include the revision of the master plan, brand development, planning for building construction and the technical, energy and traffic infrastructure, sales preparation and communication of the project. More information: and

Berliner Stadtwerke GmbH

Berliner Stadtwerke GmbH, a wholly-owned subsidiary of Berliner Wasserbetriebe, is the driving force behind the energy revolution in Berlin. The municipal company is committed in Berlin to consumer-oriented energy generation and environmentally friendly supply concepts based on renewable energies. These include innovative tenant power concepts for the residents, energy efficiency measures for public properties and residential quarters as well as the supply of households with environmentally friendly Berlin electricity. More than 40 percent of the solar capacity installed in Berlin since 2016 has been installed by the municipal utilities. Further information can be found at:


E.ON is an international private energy company headquartered in Essen, Germany, that focuses on energy networks, customer solutions and renewable energies. As one of the largest energy companies in Europe, E.ON plays a leading role in shaping a clean, digital and decentralized energy world. The company develops and markets products and solutions for residential, commercial and industrial customers. In fiscal 2017, 40,000 employees generated sales of €38 billion. Around 32 million customers purchase electricity, gas, digital products or solutions for electric mobility and climate protection from E.ON. Find out more at:

Press Contacts

Tegel Projekt GmbH:
Hans Peter Koopmann
+49 (0) 171 45 77 889

Berliner Stadtwerke GmbH:
Stephan Natz
+49 (0) 172 30 400 44

Markus Nitschke
+49 (0) 160 989 555 50


Tegel Projekt GmbH Urban Tech Republic, Gebäude V Flughafen Tegel 1 13405 Berlin Phone: +49 30 577 1401 0 E-Mail: