With the ShowPass project, the Energiehaus design and certification practice has demonstrated how the multiple goals of optimal living comfort, a healthy indoor environment and energy efficiency can be achieved in a passive house by refurbishing a typical Mediterranean urban house that dates from the late 19th century. The retrofit work was carried out in 2021 in accordance with the international EnerPHit standard for refurbishments of existing buildings. Thanks to the resulting significant reduction in the energy requirement for the house, the newly installed photovoltaic system with an output of around 3 kWp is sufficient to cover most of the energy demand. The highly efficient PV panels used are particularly suitable for renovation projects, as they can be installed directly onto metal surfaces or roof sealings made of EPDM rubber.
ShowPass reduces the ecological footprint of the construction materials used by opting for solutions that involve minimal CO2 emissions during their manufacture, processing and installation. The low levels of CO2 emissions that nonetheless occur are offset using blockchain technology. As a result, the building has been awarded a “CO2 Neutral” certificate by the Ecometro environmental impact consultancy in Madrid.
- Year of construction: 2021
- Location: Barcelona, Spain
- Planner: Energiehaus (in Spanish only)
- Passive house certification: EnerPHit
- Photography: Pol Viladoms