Submitted by: HS Hotelbetriebs GmbH - Boutiquehotel Stadthalle
Implemented country: Austria
Title: The world's first City hotel with zero energy balance
The hotel annex of the Boutique Hotel Stadthalle in Vienna in the middle produces in a year as much energy as it takes itself too. The energy required is taken from the ground water, flushing toilets is fed with rain water and electricity produced by a photovoltaic system. A centralized monitoring of power supply and controlled ventilation for the first time allow a city hotel in passive construction method. Furthermore, are also planned wind turbines. The main building was renovated completely in addition thermally. This case of double room capacity could even be reduced energy costs. I.e. pay for 81 rooms now have less energy than 43 rooms for as before the conversion.