Opening hours during the festive season
We would like to thank our valued clients for the very good cooperation in this year. To help you plan ahead, please find our opening hours during the holiday season below:
In urgent cases our hotlines are open in the morning
from 9:00 a.m. to 12:00 p.m. CET:
Wednesday, 24 December 2025
Monday, 29 December 2025
Tuesday, 30 December 2025
Wednesday, 31 December 2025
Our office will be closed on
Thursday & Friday, 25 & 26 December 2025 and
Thursday & Friday, 1 & 2 January 2026
From Monday, 5 January 2026, we will be available again during our regular business hours.
Leading Standards for Biochar and Carbon Dioxide Removal (CDR)
Carbon Standards International develops reliable solutions for the production of certified biochar and for delivering credible climate services. Our innovative standards are designed for global application. The company is headquartered in Switzerland.By bringing together all key players, we provide a strong foundation for meaningful climate action.
Simply Explained
Your path to a certified carbon sink (CINK)
Choose your standard
Select the appropriate standard for your project
Get in touch & get started
- Prepare your project documentation
- Monitoring through digital reporting and verification (dMRV)
- Annual audit
Register your project & receive CINK Credits
Receive CINKs in real time and deliver them to customers
Our Standards and Tools
Biochar production at the highest level
Our standards are developed in close partnership with the world-renowned ithaka institute for carbon strategies and are regularly updated with the latest scientific research to ensure the highest quality and sustainable carbon sequestration. This collaboration guarantees that our solutions are both scientifically sound and practical for long-term environmental impact.
Carbon sinks: measurable and effective
With the Global C-Sink Standards, we are advancing carbon sinks to a new level - scientifically sound, measurable, and designed for maximum climate impact.
Online-Tools: the digital backbone for climate-positive value creation
Our tools offer a comprehensive framework for effective, transparent, and efficient management across the entire value chain. These tools enable businesses and projects to measure, track, and manage carbon efforts with precision and ease.
Global C-Sink Tool
Biochar Tool
World-Climate Farm Tool
Our Network
Strong partnerships for a climate-positive future
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