The Future of
Carbon Removal

The Future of
Carbon Removal

What is C-Capsule?

C-Capsule is a standard for durable Carbon Dioxide Removal (CDR). Unlike traditional emission avoidance or reduction offsets, C-Capsule only certifies carbon that has been durably removed from the atmospheric cycle.

CDR is required on a large scale to reach the Paris Agreement targets and keep 1.5 alive. Achievement of Net Zero means that carbon markets need to evolve beyond the traditional offset approach; a transition recognised by many governments, NGOs, and market actors. C-Capsule Certificates help meet the growing demand for certified CDR activities as governments and businesses work toward Net Zero.

C-Capsule has an open framework and clear governance structure to provide trustworthy, universal access to the Voluntary Carbon Market for all actors. We offer a market-based solution to scale up supply by accelerating access to finance for high quality, durable CDR.

Why C-Capsule?

Efficient and Reliable

C-Capsule provides an easy to implement solution that addresses the “burden of proof” challenge encountered in conventional carbon offset markets. C-Capsule reduces the cost and increases the credibility of voluntary carbon action by supporting durable CDR solutions.


C-Capsule allows an evidence-based choice for CDR activities from a preferred technology or process. C-Capsules are uniquely attributable to verified facts relating to the durable sequestration of atmospheric carbon.


Universal methodologies can be problematic when evidencing complex or unique processes. We set clear eligibility criteria for technology developers to obtain C-Capsules, providing opportunities to participate in the market through use of robust methodologies for every solution.

Durable Sequestration

Developers must evidence both the capture and sequestration of CO2. C-Capsule assures consumers of the durability of carbon sequestered over a 100-year time horizon.

Third Party Verified

C-Capsules are independently verified at the point of issuance based on measured CDR activity. Each facility is third party audited prior to issuance to ensure adherence with the relevant methodology.

Supporting Compliance

C-Capsule is designed to support consumer claim standards such as the Integrity Council for the Voluntary Carbon Market (ICVCM), Science Based Target initiative (SBTi), the Voluntary Carbon Market Initiative (VCMI), CDP, and others to help consumers fulfil corporate sustainability claims such as Net Zero emissions.

Supporting Fair Treatment

The C-Capsule service is provided under a universal tariff to ensure non-discrimination and a ‘level playing field’ in the marketplace. Our service providers are not permitted to participate in the C-Capsule market or have any direct interest in the price of C-Capsules.

Who can benefit from C-Capsule?

Technology Developers

Owners of CDR facilities can obtain a C-Capsule for every net tonne of CO2 captured and durably sequestered. Processes able to evidence independently verified CDR data are eligible for C-Capsules. Facilities must conform to methodology aligned with the C-Capsule Methodology Guidelines and approved by the International REC Standard Foundation. C-Capsules can be sold as soon as they have been issued, providing a rapid cash return on CDR activities.


C-Capsule provides a reliable mechanism for companies to neutralise their carbon footprint toward, and beyond Net Zero. Organisations can either engage directly with facility operators or use market intermediaries to manage their portfolio.

Market Intermediaries

We recognise the key role played by market intermediaries in providing sustainability reporting services to their clients. C-Capsules carry information about every net tonne of CO2 removed, allowing intermediaries to deliver bespoke portfolio management services to their clients. As account holders, market intermediaries can manage client accounts securely and confidentially.


C-Capsule encourages governments to adopt common global standards for reporting. Recognising that governments are sovereign, C-Capsule services are designed to enable government authorities to seamlessly undertake any role within the service on a country-by-country basis, fully compliant with the International Attribute Tracking Standard.

Insurers and Risk Managers

Insurers will play a critical role in carbon markets. The shift from avoidance projects to removals brings new opportunities centred around the durability of sequestered carbon. C-Capsule is designed to work with insurance companies and markets, helping manage the risk of reversal and supporting confidence in CDR technologies. This will set a baseline for high-quality carbon certificates.