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Energy Concepts

For us this means: Accordance of economy, ecology and environmental protection. We provide a comprehensive analysis and a comprehensive planning of sustainable energy concepts for your specific task.

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Simulation &

We simulate and test your project with professional software programs. Challenging projects can be successfully realized only with the help of dynamic and scientifically profounded simulations.

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Planning &
Quality Assurance

For more than 20 years, we advise architects, engineers, investors and clients. We investigate by simulations and engineering services, if the requirements of the planning have the desired effects.



Certification &

Through a certification with a seal of approval, the value of a property is often improved. Modern architecture and new materials require more modern planning tools.


Quality and diversity

Project overview

Ifes has developed comprehensive energy and climate concepts in many projects or performed simulations. All objects are trendsetting and sustainable buildings, which fulfill the critical aspects of sustainability. We have also certified many of these buildings. In this way, the “ifes” helped many projects to a high profile Green Building Label.
You can request us for abstracts of these reference projects. If you have any further questions about individual projects, please do not hesitate to contact us.

ifes complements the service portfolio of TÜV Rheinland

The institute of applied energy simulation and facility management ifes/ ifes GmbH is successfully integrated for nearly 15 years in the market.                                                   “TÜV Rheinland” strengthens its position in the sustainable and energy-efficient design of buildings. TÜV Rheinland expands furthermore its range of services in the sustainable design and certification of real estate projects: the independent technical inspection agency TÜV has taken overthe in 1999 established institute of applied energy simulation and facility management ifes GmbH.

Specialized in the sustainable development of energy and climate concepts

The Institute with its ten employees is dedicated to the sustainable development of energy and climate concepts with simulation and for the certification of real estates by various internationally acknowledged sustainability standards for buildings. Alike “TÜV Rheinland”, the “ifes” has also accompanied a number of prestigious real estate projects in numerous German congested areas, as well as abroad, and is a member of the German Sustainable Building Council and the Austrian Society for Sustainable Real Estates and the Building Research Establishment.

Our goal is to provide all essential services from a single source in order to offer sustainable concepts."
Volker Klosowski,
chief technology officer
TÜV Rheinland AGG

„Sustainable construction aspects gain furthermore importance, especially for investors and planners. This applies to renovations as well as to new constructions. “Our goal is to assist in the creation of sustainable concepts, simulation, planning, life cycle assessment and certification of sustainability to offer all essential services at firsthand", says Volker Klosowski, chief technology officer “TÜV Rheinland AG”. For decades, “TÜV Rheinland” provides safe and efficient operation of real estates and assists customers with the task to reduce real estate costs as well as to gain higher efficiency. In addition, operators are also supported in terms of sustainability on the way to "Green Building".

"ifes” complements the range of “TÜV Rheinland” in particular by dynamic building and system simulation programs for the implementation of climate, energy and facade concepts early in the design and planning phase. It is about energy issues as well as light simulations, fire and smoke extract analysis. In addition ”ifes” has already successfully certified numerous real estate projects by various Green Building standards.

Our certifications guarantee a high quality of economic efficiency, planning and cost control

In addition to certifications with the German Sustainable Building Council (DGNB), the “ifes” also proceeds assessments based on the internationally acknowledged building certification system Leadership in Environmental & Energy Design (LEED) by the U.S. Green Building Council, as well as by the British Building Research Establishment Environmental Assessment Method (BREEAM), and the system of the Austrian Society for Sustainable Real Estates (ÖGNI), according to more than 200,000 buildings that have been certified already. Furthermore, the “ifes GmbH” is accredited as a consultant by the “HafenCityHamburg GmbH” (HCH) and is therefore professionally qualified for auditing the documentation by the implementation of services for awarding the "HafenCityEcolabel - Sustainability in Construction".

ifes certifies buildings with DGNB, LEED, BREEAM and HCH standards        
DGNB Mitglied VereinUZ skaliert 2   hch logo 02