Global Construction C-Sink – Review and Outlook

Good day ,

We are delighted to look back on our webinar held on April 15, 2025, which drew overwhelming interest from participants around the globe.

Attendees from all over the world joined to learn more about the new Global Construction C-Sink Standard and took part in engaging discussions on how buildings made with biogenic materials can be designed and certified as carbon sinks.

We received valuable feedback from practitioners, which we are currently incorporating into version 1.0 of the standard. We will notify you as soon as the first buildings can be certified under the Construction C-Sink framework.

Webinar Highlights:

✅ Introduction to the Global Construction C-Sink Standard: Certification of buildings that store CO₂ (e.g., using hemp or biochar).

✅ Presentation of the Valley Widnau pilot project – Europe’s first fully CO₂-neutral multi-family building.

✅ Insights into the monetization of carbon sinks and the use of certificates.

Webinar Materials:

• Presentation by OPENLY
• Presentation by Carbon Standards International
• Presentation by Ithaka Institute for carbon strategies

Due to high demand, we’re continuing the journey!

We are pleased to invite you to our upcoming follow-up webinars, where we will take a deeper dive into key topics.

Save the dates and join us!

Certification Deep Dive

Wednesday, August 13, 2025 – 3:00–4:00 PM (CET)

With Dr. Christoph Neururer

All about registration, documentation, and certification of new projects.

Market & Monetization Deep Dive

Wednesday, August 27, 2025 – 3:00–4:00 PM (CET)

With Claudia Feurstein (milton.earth)

Everything you need to know about market mechanisms and monetization opportunities.

Processing Deep Dive

Wednesday, October 15, 2025 – 3:00–4:00 PM (CET)

With experts from CSI and CERES

Practical guidance on implementation and registration in the Global C-Sink Registry.

Thank you for your commitment and support in helping to shape a climate-friendly construction industry.

Kind regards

Carbon Standards International AG
Ueli Steiner
CEO

E-Mail

In cooperation with

Ithaka Institute for carbon strategies
OPENLY AG