Miguel da Silva of da Silva Architecture was certified for Passive House consultation in 2012.
Passive House (German: Passivhaus) is a rigorous, voluntary standard for energy efficiency in a building, reducing its ecological footprint. It results in ultra-low energy buildings that require little energy for space heating or cooling. Passive House design is not a supplement to architectural design, but a process that is integrated with architectural design. Although it is mostly applied to new buildings, it has also been used for retrofit projects.
The Passivhaus standard originated from a conversation in May 1988 between Bo Adamson of Lund University, Sweden, and Wolfgang Feist of the Institut für Wohnen und Umwelt (Institute for Housing and the Environment, Germany). Their concept was developed through a number of research projects, aided by financial assistance from the German state of Hessen.