Energy Efficient
Retrofit Measures for
Government Buildings

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IEA ECBCS Annex 46
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Energy Efficient
Retrofit Measures for
Government Buildings
Annex46-de_e-Data Protection
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The structural analysis of non-residential buildings proved that many public or government buildings are characterized by high energy consumption. Since constructions of public buildings are quite similar in many countries, experience obtained from renovation projects using energy saving measures could be extended to be applied on an international level. Despite this insight, energy efficient measures are rarely used when retrofitting public/ government buildings. In many cases, decision makers simply do not have sufficient information about the great variety of available energy saving measures and the building energy efficiency these will achieve – neither do they know about the rate of return that investments in such measures can yield.

Annex 46 "Holistic Assessment Toolkit on Energy Efficient Retrofit Measures for Government Buildings (EnERGo)" within the framework of the International Energy Agency‘s (IEA) ECBCS had the task to develop a simple user-friendly computer program (Toolkit) to support design decisions in favour of energy saving retrofits at a very early stage of planning.
For this purpose, Annex 46 strongly relied on the findings obtained from previously concluded Annex 36 "Retrofitting of Educational Buildings – REDUCE", the main result of which was the "Energy Concept Adviser" (ECA) computer program.

The results of this international project (duration: 2006 – 2010), the German contribution of which was funded by the Federal Ministry for Economy and Technology (BMWi), have been compiled at this website.

Project participants from Germany included:
- Fraunhofer Institute for Building Physics
- schiller engineering
- ennovatis

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Fraunhofer Institute for Building Physics