Apply for innovation funds Frontier is an advance market commitment to buy an initial $1B+ of permanent carbon removal between 2022 and 2030.

If you are working on any of these areas, we want to hear from you.

Apply here: frontierclimate.com/apply/innova...

- Novel approaches with breakthrough potential: We continue to be on the lookout for step-change innovations that fundamentally outcompete existing technologies and offer a clear "unfair advantage" to highly scalable, low-cost carbon removal.

- Building precise, scalable measurement tools for open systems: We need innovations—from soil pore-water sensors to marine mixing models—that accelerate the transition to automated, high-fidelity monitoring.

- Determining how to add more alkalinity to the ocean efficiently and safely: We are looking for field-based empirical studies that characterize chemistry in the near-field mixing zone and identify engineering strategies to maximize alkalinity addition without triggering precipitation.

- Increasing mineralization efficiency for large volumes of rocks: We seek the best ways to increase efficiency at scale — from rock pile architectures that effectively carbonate million-ton deposits with air to innovative pretreatments increasing mineral reactivity.

We are focusing our 2026 R&D grants and prepurchases on these challenges:

Accelerating research and innovation for high-potential carbon removal approaches We are inviting applications to Frontier's 2026 Innovation program targeting novel carbon removal approaches and last-mile challenges in ocean alkalinity enhancement, surficial mineralization, and ope...

Applications are open for Frontier’s 2026 Innovation program!
frontierclimate.com/writing/inno...

Please join us for an introduction to #CDR startup accelerators! We've got a great panel lined up, with Tito Jankowski from AirMiners Launchpad, Mica Taborga Claure from Marble venture studio, and Marian Krueger of remove. Register here: luma.com/mxsdp8xm #energysky #carbonremoval

Proceedings of the 2025 Carbon to Sea Annual Convening - Carbon to Sea Initiative Over the past few months since the 2025 Annual Convening, the Carbon to Sea team has been compiling a comprehensive report of the key insights shared across three days of meaningful conversations, pre...

Resources for those tracking the science:

🔗 Carbon to Sea’s 2025 annual convening takeaways: www.carbontosea.org/2025/07/28/2...

🔗 @Ocean_Visions OAE Field Trials database: oceanvisions.org/roadmaps/oae...

🔗 @theNASEM report on Ocean CDR: nap.nationalacademies.org/catalog/2627...

OAE Data Protocol, Version 1.0.0 - Carbon to Sea Initiative The OAE Data Management Protocol outlines recommendations for producing consistent data and metadata for Ocean Alkalinity Enhancement (OAE) research projects. With broad adoption, this protocol will m...

Importantly, Planetary will make all collected data and metadata on efficacy verification as well as environmental monitoring available to the public following Carbon to Sea’s data management protocol.

www.carbontosea.org/oae-data-pro...

Frontier buyers sign $31M deal with Planetary to advance ocean alkalinity enhancement Frontier has facilitated offtake agreements with Planetary, a company that removes atmospheric CO₂ and reduces local ocean acidity by adding dissolved alkaline minerals to seawater.

Today, Frontier announced an offtake agreement with Planetary, the team behind the world’s first OAE verified tons. Their work is part of a growing set of global projects scaling responsible testing of OAE under real-world conditions.
frontierclimate.com/writing/plan...

Evidence to date — from mesocosms, oyster hatchery interventions, and > a dozen controlled coastal pilots — shows ability to control pH within safe bounds, measurable CO₂ drawdown, and no acute harm to local biota for alkalinity addition at relevant rates.

OAE raises alkalinity by adding minerals such as Ca(OH)₂, and Mg(OH)₂. This shifts carbonate chemistry, allowing for additional CO₂ uptake while locally providing relief from acidification.

The ocean absorbs ~25% of human CO₂ emissions. That uptake is acidifying surface waters, stressing calcifiers, and weakening the ocean’s carbon sink.

Quick state of play on Ocean Alkalinity Enhancement (OAE): where the science stands, what recent trials show, and why it warrants careful, scaled testing. 🧵

Today is Day 2 of the public hearing on the EPA’s reconsideration of the 2009 endangerment finding, the key ruling underpinning U.S. greenhouse gas regulations. 🧪

Testimonies start at the top of the hour, and we’re following along: 👇🧵

The recent DOE climate science report misrepresents the work of many researchers. Carbon Brief asked those cited to review the parts of the report where their work was used, and we collectively found 100+ misleading or false statements: interactive.carbonbr...

absolute insanity - the new normal.

Karbonetiq: uses a low-cost, passive aeration system to mineralize industrial waste into Mg and Ca carbonates.

pHathom Technologies, Inc: develops a storage solution for concentrated CO2 streams (e.g., for biogenic emissions) based on limestone dissolution, storing the CO2 safely and durably in the ocean.

Limenet: develops an electric kiln for production of carbon-free lime for CDR approaches such as ocean alkalinity enhancement, mineral looping DAC or surficial mineralization.

Frontier boosts ocean liming and surficial mineralization startups in fifth round of prepurchases Frontier has facilitated $1.75 million of carbon removal purchases from Karbonetiq (United States), Limenet (Italy), and pHathom (Canada) on behalf of buyers Stripe, Shopify, and Google. Frontier buye...

Excited to announce another set of Frontier prepurchases! The field of carbon removal is maturing and we have selected three companies that work on compelling approaches to high scale, low cost approaches to CDR by leveraging abundant, alkaline materials:

frontierclimate.com/writing/summ...

$1 Trillion In Economic Damage From U.S. House’s Reconciliation Bill Energy provisions of the “One Big Beautiful Bill” would cost our economy years of growth with 830,000 lost jobs, $1.1 trillion less GDP, and 50% higher power prices.

🔌💡 Our @silviomarcacci.bsky.social's recent piece analyzes how the #energy provisions of the “One Big Beautiful Bill” would cost our #economy years of growth with 830,000 lost jobs, $1.1 trillion less GDP, and 50 percent higher power prices 👇 www.forbes.com/sites/energy... #energysky #greensky

Director of Business, Philanthropy, and Investor Partnerships Our mission is to help the world reach “Drawdown" as quickly, safely, and equitably as possible.

Hey! Project Drawdown is hiring a Director of Business, Philanthropy, and Investor Partnerships!

Important role. Amazing team. Remote position, anywhere in U.S. Excellent salary and benefits.

Come join us!

drawdown.org/careers/dire...

Adding carbon removal to a waste to energy plant is a no brainer - excited about this first project with Hafslund Celsio!

This is all so f**ed. Hope grantees will be able to keep their funding and progress the science! Hold on!

Wie ein Münchner Unternehmen die Energieherausforderung der direkten CO2-Abscheidung meistert Wir wissen, dass wir neben der Emissionsreduktion bis 2050 jährlich 5-10 Gigatonnen CO2 aus der Atmosphäre entfernen müssen, um die schlimmsten Auswirkungen des Klimawandels zu verhindern. Doch viele ...

and if you speak german: www.linkedin.com/pulse/wie-ei...

Frontier buyers sign first electrochemical DAC deal with Phlair Frontier buyers will pay Phlair $30.6 million to remove 47,000 tons of CO₂ between 2027 and 2030.

Frontier has facilitated its first electrochemical DAC offtake with Phlair.

Phlair has the potential to deliver ultra low-cost DAC for a few reasons—one being that their approach is explicitly designed to work with cheap intermittent energy sources like solar.

frontierclimate.com/writing/phlair

🚨Postdoc Offer🚨

Fully funded 2-year research position at Paris or Aix-en-Provence: your choice!

The project aims to predict OAE feedbacks and environmental impacts in the ocean interior, in particular at the seabed.

See job ad : nuage.osupytheas.fr/s/4zMfHFZ8S2...

Please share widely! ⚛️

Help University Students Pitch their Climate Solutions in NYC! Help students present their carbon removal solutions at the Carbon Unbound Leadership Summit in New York City this Spring!

Want to support the students getting involved in the fighting climate change? Please consider supporting the Carbon Removal Challenge!

All funds go directly to the finalist teams to cover travel & lodging so they can present to industry leaders in NYC!

fundrazr.com/carbonremova...