Econcern BV (Econcern), a Netherlands-based services provider and product developer for a sustainable energy, is constructing a sustainable energy office building in cooperation with Friedrich Wassermann GmbH & Co. The zero emission building or so called passive house will have the lowest electricity consumption, best quality ventilation and the highest energy efficiency. It will serve as the new German head office for Econcern and will be opened in October 2008.

Chairman of the board Ad van Wijk: For our company with its mission to have a sustainable energy supply for everyone it is essential to practise what we preach. With this building we set the new standard in real estate. The highly sustainable 3-store-building has a five times lower heating demand and has an energy saving of almost 70% compared to conventional office buildings.

The building is based upon an integrated energy concept. The heating of the building is based on internal heat loads and optimal insulation. A central ventilation system will provide fresh air preheated by a groundwater based heat pump, so a comfortable room climate is guaranteed at all times. Special ‘combi zones’ serve as flexible meeting- and workplaces; moderately sized office rooms increase the amount of daylight in these areas. In addition to high insulation of walls and multi-glazed windows, solar systems and small wind turbines, so called urban turbines, will be installed on the roof.

For Econcern the German head office will host its subsidiaries Ecofys, Ecostream, Evelop, as well as its Ecoventure OneCarbon. With a floor space of 3,560 square meter it has enough space for up to 150 employees. In the Netherlands Econcern is developing its global sustainable energy head office which is expected to be open in 2010.

The design has been provided by architectural office Benthem Crouwel . Architectural highlight is the atrium, a glazed roofed patio in the centre of the building, which holds a main ventilation function within the innovative energy concept. The atrium combined with the energy efficiency concept provided for the building to be named ‚’Etrium’.