This actually exists in Germany (Energieausweis or energy certificate), see e.g. https://www.howtogermany.com/pages/energycertificate.html https://www.howtogerm

This actually exists in Germany (Energieausweis or energy certificate), see e.g. https://www.howtogermany.com/pages/energycertificate.html https://www.howtogermany.com/pages/energycertificate.html