ChristophorusHaus - A passive house

The ChristophorusHaus is a 2100 m² multifunctional building located in Austria, and is constructed following the passive house philosophy. Its heat demand is 15 kWh/m2.a, and total primary energy consumption (including electricity) is 49 kWh/m2.a. Compared to a conventional building, it saves each year 275 MWh of primary energy and 75 tonne CO₂. The building uses 1000 tonne of wood for its construction, and stores 350 tonnes of CO₂, providing an effective carbon storage solution (at least if the wood used is additional to forest stock).