Sönke Grafen

Certified Passive House Consultant

Dipl.-Ing. (FH) Elektrotechnik

Energie im Raum

Fasanenstr. 2
46539 Dinslaken
Germany

Phone: +49 (0) 179 403 86 39

Initial by Exam

Certificate valid from July 18, 2016
Certificate valid until July 18, 2021
The certificate only applies to this person.

Examined by Öko Zentrum NRW GmbH at Hamm, Germany