Submitted by: Poppe*Prehal Architekten ZT GmbH
Implemented country: Austria
In the Austrian city of Steyr, for the first time a complete modular construction system has been developed to meet the passive house standard. The design uses primarily the recyclable and almost CO2-neutral material wood. Daylight utilization is optimized for each application and energy costs are reduced by 90%. In April 2009 as a demonstration, the storage and administration building of Eine Welt Handel AG in Niklasdorf (Styria, Austria) was erected. The pilot project has a nearly CO2-neutral biomass heating system, a heat-recovery ventilation system that reacts to demand, and individually regulated radiators that provide the small amount of heating energy that is required. Annual CO2 emission savings amount to 120 tons; the heating energy requirement is 15 kWh/m²a; costs for domestic hot water remain under €2000 annually.