This Week in CDR - Week 43, 2025

We are back with another edition of This Week in CDR, a weekly round-up of the top news, developments, and market updates from the world of durable carbon removal.

This week saw some key developments in durable CDR, as Microsoft purchased 28,900 tonnes of CDR from UNDO, the UK government published an independent review of greenhouse gas removals and Varaha achieved Asia’s first enhanced weathering carbon credit issuance via Puro.earth.

Read on to learn more in the newest edition of This Week in CDR!

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CDR.fyi DAC Market Snapshot 2025 H1
Explore insights from the DAC Market Snapshot (2025H1) to understand the dynamics behind DAC's role in the state of the durable CDR market.

Deals and Partnerships

[Image source: UNDO]

Deals

UNDO signed an agreement with Microsoft to supply 28,900 tonnes of CDR from enhanced weathering, supported by a novel debt facility from Inlandsis, a Canadian climate fund. This is the first CDR deal structured with debt capital in the industry.

Partnerships

SeaO₂, Carbyon, Skytree, and Paebbl launched a coalition of Direct Air Capture and Direct Ocean Capture startups, presenting a policy paper at the European Commission that advocates for the technologies to help scale Europe’s climate ambitions.

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Projects

[Image source: Varaha, Puro.earth]

Varaha achieved Asia’s first registry-backed Enhanced Weathering (EW) carbon credit issuance via Puro.earth. The issuance stems from Varaha’s first EW deployment in Khargone, Madhya Pradesh, working with cotton-growing smallholder farmers.

Ghana-based Truecoco announced that it has been officially certified by Puro.earth and has started to issue CDR credits. It has also become the first Puro-certified project in West Africa and the first to use coconut husk as its feedstock.

Financing

Image source: Arbor Energy

Arbor Energy raised $55 million in Series A funding, co-led by Lowercarbon Capital and Voyager Ventures, with participation from Gigascale Capital and Marathon Petroleum Corporation.

Pricing Perception Gap in Durable CDR
Explore insights from the Durable CDR Pricing Survey, conducted in partnership with OPIS, to help market participants better understand pricing expectations for durable CDR credits.

Policy

[Image source: Carbon Gap]

A cross-sector coalition with Carbon Gap, Zero Emissions Platform, Bellona, Biochar Europe, Stiesdal, and Pyrolysis Denmark, drafted a proposal on how biochar carbon removal is recognized in the EU’s Carbon Removals and Carbon Farming (CRCF) regulation.

Research and Reports

[Image source: Puro.earth]

Puro.earth announced that it will integrate the CCS+ Initiative’s BECCS and DACCS methodologies into its certification and issuance framework to enhance the integrity and scalability of CCUS and CDR in carbon markets.

Rainbow finalized its Enhanced Weathering methodology, developed in collaboration with experts and project developers in the field. The methodology accounts for the full carbon balance, including upstream and downstream activities.

The Exponential Roadmap Initiative released a Removals Action Guide outlining six actions for businesses to integrate durable CDR across governance, targets, procurement, transparency, finance, and advocacy -to reach science-based net-zero.

The UK Government published an Independent Review of greenhouse gas removals, recommending a portfolio approach, improved governance, reduced biomass imports, and strategic mandates to meet net zero and stimulate economic growth.

The Institute for Responsible Carbon Removal released a practical guide to help researchers and practitioners engage communities effectively in ocean alkalinity enhancement and marine carbon dioxide removal efforts.

A group of 29 researchers published a review paper on DAC, reporting on its various aspects such as the technology, the state of development, policy, equity, justice, public perceptions, and monitoring, reporting, and verification.

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Poll of the week

In our latest poll, we're eager to hear from you: How strong a quarter do you think was Q3 2025 in durable CDR in terms of tonnes contracted?

Greater than 5M tonnes
1M-5M tonnes
500K–1M tonnes
100K-500K tonne

Click here to participate in the poll and share your thoughts in the comments.

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Disclosure

CDR.fyi is a public benefit corporation operating globally. Some of the company’s contributors have affiliations with companies in the industry, including Milkywire, Charm Industrial, CDRJobs, and DVNE. Data and content published by CDR.fyi, including This Week in CDR, our Monthly Recaps, and our Quarterly Market Updates, are vetted and reviewed by individuals with no conflict of interest.