In 1996, after the concept had been validated at the Institute in Darmstadt, with space heating at 90% less than that required for a standard new building at the time, the Economical Passive Houses Working Group was created.
Nakon što je koncept potvrđen u Darmstadtu, s 90% manje potrebne topline grijanja od standarnih novoizgrađenih zgrada u to vrijeme, stvorena je 1996. godine Razvojna grupa za ekonomične pasivne kuće.