The high-rise building with the main entrance facing Neuenfelder Straße, together with the west wing (left) and the north wing (right), houses the Hamburg Authority for Urban Development and the Environment.
© Sprinkenhof GmbH. Foto: Franziska Glück

IBA Hamburg
Excellent architecture with a sustainability certificate

The new building for the Hamburg Department for Urban Development and the Environment, which was completed in 2013, forms part of the International Building Exhibition (IBA) in Hamburg. The exemplary building complex is designed to be energy-efficient, sustainable and cost-effective.

The power plant, located on the Rhine, is characterised by very efficient water extraction and return facilities. These are ideally suited as a heat source for a large-scale heat pump.

Launch of the Living Lab for the Energy Transition GWP
New: Large-Scale Heat Pumps in Germany’s District Heating Networks

A large proportion of Germany’s CO2 emissions can be attributed to the supply of heat. Large-scale heat pumps powered by greenhouse gas-free electricity could help the country to reduce its CO2 emissions.

An example of a CHP plant.
© bannafarsai -

Increasing the flexibility of CHP plants
Use of heat storage systems and power-to-heat plants in district heating generation

CHP plants can be made more flexible by integrating thermal storage systems in district heating networks, as this enables temporal decoupling of the electricity and heat provision so that the electricity generated by CHP plants can be better adapted to the power requirement or residual load.

Efficiently illuminating paths and squares with LEDs: A section of the loading road can be seen, which is equipped with masts, each of which is fitted with three luminaires at different heights.
© TU Berlin Fachgebiet Lichttechnik

Street lighting
Using LEDs to efficiently illuminate paths and squares

Energy-efficient LED technology also facilitates targeted light distribution, making it suitable for lighting small areas. This further reduces the energy requirement while improving the lighting quality in cities.

An example of solar-based energy supply for buildings.
© zstock -

Energy management for buildings
Management system for the solar-based energy supply of residential buildings

In the “iHEM” research project, an integrated energy supply using solar energy is being developed for residential construction. A specially developed energy management system coordinates the systems for generating solar power and solar heat with electricity and thermal storage systems...

Example of a building with PCM wall elements and PCM cooling ceilings.
© ZAE Bayern / Petra Hoeglmeier

Phase change materials in buildings
Performance of ventilation systems with PCMs

Phase change materials (PCMs) are only used sporadically in construction, although various products and systems have been available on the market for several years now. The PCM Demo II research project therefore intends to test and scientifically evaluate the practicality of PCMs in buildings.

An example of a modernised office building.
© photo 5000 -

Financing model for new-build scheme
Public-private partnership finances new energy-efficient administrative building

A special financing model was used for delivering the project: a public private partnership or PPP for short. Despite a tight public budget, the client (the Region of Hanover) has succeeded in constructing a consistently energy-optimised building for 300 staff.

Three buildings and a gymnasium of the vocational college campus in Detmold were fundamentally renovated.
© Yagmur Bildik, iFE Institut für Energieforschung

Plus Energy School
Resource-conserving refurbishment of a vocational college

On the campus of the vocational college in Detmold, three school buildings and a sports hall were completely refurbished. The facades and top floor slabs were insulated with cellulose, passive house windows were installed and the roof surfaces were covered with PV panels.

symbolic image
© FotoCuisinette/iStock/thinkstock

Interaction of buildings with electricity and heat grids
Grid-friendly operational management strategies for non-residential buildings

This project is aimed at developing and testing innovative strategies for the energy-efficient operational management of non-residential buildings. This is intended to make the supply of heating and cooling energy to buildings in the commercial, trade and service sectors energy-efficient and..

Climate chamber of the ILK Dresden research institute in the 3D CAD model with RLT system
© ILK Dresden gGmbH

Heating and ventilation systems
Sensor position affects energy requirements and indoor comfort

How does the sensor arrangement affect the energy requirements for heating and air-conditioning systems? And how can this impact be quantified under differing usage conditions? This research project intends to answer these questions based on coupled system and flow simulations in conjunction with...

Aerial view of Esslingen.
© Jürgen Fälchle -

City Quarter
CO2-neutral district for living, working and studying

In the town of Esslingen, a new inner-city district comprising residential and commercial space as well as new university building is being constructed across a 120,000 m² gross floor area by 2025.

The campus of the Technical University of Munich in Garching, with the city of Garching in the background.
© Lehrstuhl für Energiesysteme (LES, TUM)

Quarter energy concept
Optimised energy supply of mixed-use areas

By analysing historical consumption and simulating large loads, power, heating and cooling demand scenarios are being drawn up for the future development of TU München's Garching Campus and optimised across all sectors.