National Energy Globe Award South Africa (overall winner)
Submitted by: Kunstuniversität Linz/ die Architektur/ Prof. Roland Gnaiger
Implemented country: South Africa
Title: Passive living in Tebogo
Conventional homes in South Africa are subject to extreme fluctuations in temperature. In Johannesburg (around 2000 meters above sea level) winter temperatures fall to minus one degree Celsius. In the townships temperatures drop to as low as three to six degrees in winter, and reach highs of forty-five degrees Celsius in the summer. In winter low temperatures need to be counteracted, particularly in houses with ill and disabled inhabitants. Often this can be managed by – ecologically extremely questionable and virtually unaffordable to the locals – electric heating. The project goal was to attain a comfortable minimum of 18 degrees in winter and of 29 degrees in summer – without the use of ´external´ energies, without machine operated climate control. Heating and cooling only using building and planning measures has been perfectly implemented and the result can, in principle be repeated throughout Africa. Essentially the Tebogo project demonstrates through the use of cost-free, readily available materials of clay and grass as well as the integration of local workers a way towards an economically and ecologically sustainable form of dealing with the global climatic problems through effective construction. This has always been the foremost and most elementary building task.