Eine Reihe neuer Versuchsprojekte soll nun die tatsächliche Wirksamkeit unterschiedlicher Ansätze demonstrieren und anhand gemessener, nicht errechneter Werte vergleichbar machen. ###>Values achieved by particular components can differ, depending on how they interact in the building in question or with the habits of its users. Now, a series of new pilot projects aims to demonstrate the actual effectiveness of various approaches and enable their comparison by means of measured, not calculated values.