Energy Efficient Construction

Energy Efficiency in Construction

The research group 'Energy Efficiency in Construction' is dedicated to the scientific investigation of methods to reduce the energy consumption of buildings and settlements, up to zero-energy buildings and energy-positive settlement components. The focus is on innovative and energy-efficient technologies, which are investigated by means of interdisciplinary research approaches at the building and settlement level, for example within the project "SWIVT – Settlement Building Components for Existing Residential Quarters – Impulses for the Networking of Energy-Efficient Technologies". The researchers are in close professional exchange with partner institutes within and outside of the TU Darmstadt as well as with local building contractors and energy suppliers and thus develop system solutions to reduce the energy demand in the building sector. In addition, the scientists are dedicated to researching innovative, thermally activated façade elements, which are applied to and investigated in the lighthouse project "ETA-Fabrik: Energy-Efficient Factory for Interdisciplinary Technology and Application Research", among others. In this context, the issue of life cycle costs is also examined. A further research focus is the development of energy-active and energy-flexible building envelope elements with the aim of energy-flexible thermal conditioning of rooms, which is pursued in the research project "SynErgy", among others.

Dr. Nadja Bishara,
Junior Research Group Leader Energy Efficiency in Buildings

Our focus is on innovative and energy-efficient technologies, which we research by means of interdisciplinary research approaches at the building and settlement level, such as in the project "SWIVT - Settlement Building Blocks for Existing Residential Neighborhoods - Impulses for Networking Energy-Efficient Technologies".

In the follow-up project SWIVT II, the strategy developed in the preliminary project for linking building concepts in networked operation with operationally optimised, innovative energy technologies is to be implemented at settlement level in the Postsiedlung neighbourhood in Darmstadt and demonstrated in practice.

After successful verification of the SWIVT approach through theoretical and experimental investigations, prototype construction and coupled simulations, the project partners want to validate the effectiveness of the solution approach at system level in all its sub-aspects. In the process, models from SWIVT (e.g. as application tools for the design of energy storage systems) will be transferred into practice as well as the concept of an existing housing estate implemented and validated as an energy-efficient, system-oriented unit.

Interest awakened?

Learn more about EnEffStadt with the project poster:

Poster (opens in new tab)

The future electricity system in Germany will be strongly influenced by the energy transition. Due to the increasing share of renewable energies and the associated fluctuations in electricity generation, solutions must be developed that stabilise the electricity grid, i.e. bring electricity consumption into line with electricity generation. In this case, the SynErgie project aims to research and demonstrate how energy-intensive production processes can be adapted to fluctuating power supplies in order to make a contribution to the success of the energy transition. In addition, this will create the conditions for Germany to become the leading provider of new technologies and processes that link energy-intensive, individualized industrial processes with the volatile feed-in of renewable energies.

Interest awakened?

Learn more about SynErgie with the project poster:


Technical and methodical solutions which enable an increase in energy efficiency in industrial buildings are developed in the project “ETA im Bestand” (FKZ: 03EN2048A-I). A holistic approach in which all subsystems of a production system (machines and systems, technical building equipment and supply technology, production environment) are considered under the aspect of broad applicability is pursued.

In the previous project “ETA-Fabrik” it was possible to demonstrate that this approach can generate high energy savings for a new build research factory. In “ETA im Bestand” the implementation of such energy efficiency measures in existing industrial buildings will be researched. Existing industrial buildings and the industrial processes they contain will be typified in a database. Based on this, energy efficiency measures for industrial buildings can be derived.

One solution is the thermal zoning of individual machines or production processes with particularly high demands on room air temperature or room air quality, so that it’s not necessary to condition the entire production hall. For this purpose, modular supply and climate control elements made of micro-reinforced, ultra-high performance concrete which is thermally activated with capillary tube matting are being developed as a structural retrofit solution.

Interest awakened?

Learn more about ETA in existing buildings with the project poster:


The living laboratory DELTA (“Darmstädter Energie-Labor für Technologien in der Anwendung”, funding code: 03EWR002A-K) acts as a showcase for the urban energy transition to demonstrate energy-optimized districts. The aim is to show that proven techniques for increasing energy efficiency and flexibility are economically feasible and socially acceptable. As a living laboratory, DELTA wants to act as a role model and obtain results that can also be transferred to other cities. Several actors have joined forces for this in Darmstadt. These include large industrial companies, small medium-sized companies, start-ups, municipal companies and research institutions; coordinated by the TU Darmstadt.

A multi-layered, cross-sectoral approach is pursued within the project. The focus is on the consistent increase in energy efficiency in all sectors, which is already seen today as the greatest usable potential of the energy transition. Both are achieved through the intelligent linking of individual quarters of the urban energy system and through sector coupling.

Sub-project 1 is realizing an energy-optimized residential area for around 3000 people, taking into account affordable living space on the site of two former US barracks. In order to be able to implement the climate and energy policy goals of the federal government in the building sector, it is necessary to increase energy efficiency and energy flexibility through the use of innovative building technology in addition to the use of sustainable building materials. In combination with intelligent, electrical and thermal networking, this forms the cornerstone of today's energy-optimized residential areas. In addition, innovative (cooperative) business models are being developed in order to be able to operate the emerging energy system without subsidies. Thus, all players in the energy system can participate in the energetic and economic potential.

Interest awakened?

Learn more about DELTA with the project poster:



  Name Contact
Dr. Nadja Bishara
Paper and Energy
+49 6151 16-23031
L5|06 630


  Name Contact
Bianca Biernatek M.A.
+49 6151 16-23017
L5|06 416
Xenia Kirschstein M.Sc.
+49 6151 16-23018
L5|06 420
Joscha Reber M.Sc.
+49 6151 16-23067
L5|06 462
Anja Schaffarczyk M.Sc.
+49 6151 16-23018
L5|06 420
Henry Schneider M.Sc.
+49 6151 16-23063
L5|06 462
Vanessa Schneiker M.Sc.
+49 6151 16-20574
L5|06 465
Yang Xue M.Sc.
+49 6151 16-21516
L5|06 465