Triple Zero ®

Triple Zero ® is a standard for sustainable architecture developed by Werner Sobek. It defines the demands a building must fulfil to satisfy aspirations regarding sustainability in the built environment. The name Triple Zero ® is protected by trademark law. R128 is a good example of a building fulfilling Triple Zero ® standards. Wherever possible Werner Sobek uses the Triple Zero ® concept as basis for the design, planning and construction of buildings. Consulting services provided by Werner Sobek equally follow the Triple Zero ® standard.


Zero Energy Building

On average, the building requires ZERO energy from external sources. The energy generated from regenerative sources on and in the building or the immediate piece of property upon which the building stands is at least equal to the entire primary energy requirements of the building for heating, cooling, hot water, auxiliary power and power for all typical domestic applications.

Zero Emission Building

The building produces ZERO carbon dioxide emissions. The reference value is the total primary energy demand, which is then converted to carbon dioxide emissions. No burning processes are permitted in the building or on the property.

Zero Waste Building

When the building is converted or deconstructed, it produces ZERO waste. At the end of their life cycle all building elements can be fully recycled without any components needing to be burnt or sent to a disposal site. The plot of land can be returned to nature without any fear of contamination or residual waste.