Expansion Headquarter Windkraft Simonsfeld

The headquarters expansion for Windkraft Simonsfeld, located in Ernstbrunn, Lower Austria, extends Reinberg’s original building with a compact, two-storey timber addition that frames a central atrium. The new spaces for offices, events and catering enhance communication and flexibility. Rammed earth, wood and photovoltaic systems ensure ecological performance, while sheltered outdoor areas encourage social interaction and provide comfort within a unified architectural concept.

The project responds to Windkraft Simonsfeld’s rapid growth by extending the existing headquarters while preserving their architectural integrity. The strategy focuses on fostering collaboration and transparency by incorporating an atrium as a central meeting space within a new two-storey addition. This spatial connection strengthens internal communication and opens the building up to visitors. The design strikes a balance between density and openness, featuring a clearly defined timber structure and flexible interior organisation. Every decision was guided by sustainability: energy-efficient construction, component activation and on-site renewable systems ensure long-term resilience. The result is an adaptable, socially vibrant workplace that embodies the company’s principle: "We build for the future."

The extension has a modular timber frame structure with a rammed earth core that contains access and service areas. This ensures thermal stability and humidity regulation. Energy is supplied by deep geothermal boreholes and a complete photovoltaic roof system, enabling the building to perform carbon-positively even during construction. The compact structure minimises material use and cost while maximising flexibility for future adaptation. The focus of sustainable maintenance is on simple material replacement and energy efficiency, which extends the building’s lifecycle with minimal environmental impact.