Society for the rational use of energy

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The Society for Rational Energy Use e. V. ( GRE ) is a non-profit, nationwide operating organization based in Kassel . Since it was founded in 1978, it has tried to unite numerous institutions and experts from science, business and environmental protection. The company aims to promote measures for environmental and climate protection, excluding its own commercial business. The GRE deals in particular with the topics of increasing energy efficiency in building use, energetic renovation of old buildings, improvement of structural thermal insulation in new buildings and existing buildings, high-quality and needs-based heat generation using renewable energy sources.

The GRE became well known when the first version of an energy performance certificate for buildings was published under its label in the early 1980s (calculation method Hauser / Hausladen). The energy pass has now been introduced in Germany in connection with the 2007 Energy Saving Ordinance and is intended to help consumers assess the energetic quality of a building.

With a regular GRE congress, the GRE offers a forum that presents the current status of the political requirements for improving energy efficiency in buildings, news from research and development as well as planning aids for the practice of energy-saving construction. The last GRE congress took place in Berlin in 2008.

The GRE cooperates in the field of further education and public relations with the University of Kassel , the Center for Environmentally Conscious Building. V. (ZUB) and the working group for contemporary building eV (ARGE // eV or ARGE Kiel). Together with the ZUB, the GRE has been working on the further development of the energy certificate for years. From 1986 to 2014 Gerd Hauser ( Technical University of Munich , Fraunhofer Institute for Building Physics ) was first chairman of the board.

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