Last updated: June 2026
NRG positive — Achim Siegele
Geneva, Switzerland
Swiss business ID (UID): CHE-250.171.544
Email: contact@nrg-positive.ch
Telephone: +41 78 696 84 85
Responsible for publication: Achim Siegele.
This website is hosted in Switzerland by:
Infomaniak Network SA
Rue Eugène-Marziano 25
1227 Les Acacias — Geneva, Switzerland
www.infomaniak.com
The processing of personal data in connection with this website is governed by the Swiss Federal Act on Data Protection (FADP). Data controller: NRG positive — Achim Siegele (contact details above).
Data collected. This website collects personal data only when you use the contact form: name, email address, project type and the content of your message. This data is used solely to answer your enquiry. It is neither sold nor passed on to third parties for commercial purposes.
Retention period. Enquiries are kept for as long as necessary to handle your request, and in any case no longer than the applicable statutory retention obligations require.
Cookies and tracking. This website uses no tracking cookies, no third-party analytics tools and no advertising. Fonts are hosted on our own servers: no data is transmitted to external services when you browse the site.
Your rights. Under the FADP you may request access to the data concerning you, as well as its correction or deletion. Please address your request to contact@nrg-positive.ch.
All content on this website (text, diagrams, photographs, logo) is the property of NRG positive — Achim Siegele unless otherwise stated. Any reproduction requires prior written consent. Minergie® is a registered trademark of the Minergie association; Passivhaus and CEPH refer to certifications issued by the Passivhaus Institut (Darmstadt).
The information published on this site — in particular references to regulations (LCI, LEn, IDC, MuKEn, RE2020) and normative values — is provided for guidance and reflects our knowledge at the date of the last update. It replaces neither the official texts in force nor a study specific to your project. External links are provided for information; NRG positive accepts no responsibility for their content.