This case study of residential buildings represents the first residential building in the world with an intelligent and consistent combination of photovoltaics, battery storage, synthetic e-gas/biogas and intelligent energy management (hybrid box). It has also received a recognition at Energy & Temperate Climates Prize of the Green Solutions Awards 2020-21.

The City of Feuchtwangen in Bavaria, Germany developed a teaching and research campus for energy-related studies within the Faculty of Applied Engineering Sciences at the Ansbach University of Applied Sciences. The so-called research hall was the first building of the campus to be constructed and has been in use for research and teaching purposes since February 2018. The building offers space for a wide variety of experimental setups, e.g. in the field of innovative heat generation systems. It was built conformant with the Efficiency House Plus standard.

The Burgkunstädter town hall is one of the most suggestive half-timbered house in Franconia and it shows an impressive decorative half-timbered structure. The aim of the overall renovation of the old building was to preserve and emphasise the historical value of this important monument and to equip it for the demands of the present day.

The biggest Passive House residential development in Navarra including 128 PH apartments represents a great example of energy efficiency.