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Connecting Leaders, Sparking Action

The Circular Carbon Network is a non-profit initiative that is focused on catalyzing more investment and
commercial activity in the emerging Circular Carbon Economy to help accelerate its growth and realize its
full economic and climate potential.

What We Do


We increase the visibility of your company’s work and fundraising goals to over 250+ active Investor Members.


We source and share actionable investment, commercialization, and collaboration opportunities.


We provide market analysis to expand the broader market’s awareness and understanding.

Why Focus on Capital?

Key Gap

There is a growing number of organizations working on technical and policy issues in the space. We're filling a critical gap by focusing on the capital and commercial needs of the sector.

Foundational Challenge

The circular carbon sector has the potential to be a $1 trillion+ market. Hundreds of billions of dollars in investment will be required over the coming decades.

Deep Expertise

We're longtime investors and entrepreneurs ourselves. We understand the tough challenges facing market participants in this emerging sector.

Increasing Demand

There's growing interest in impact and climate investing globally. By educating and connecting investors and corporates to opportunities in this sector, we address a core need.

Our Network

Our growing Network includes several thousand leading circular carbon innovators, investors, companies, and stakeholders globally.


We support the entrepreneurs working on the front line of this space by providing better access to potential capital and commercial partners.

Innovator Index

Capital Providers

We continually aggregate and share market data and active investment opportunities for the investors in our Network.

Capital Index


We also work with the key foundations, scientists, NGO leaders, policymakers, and others whose expertise is critical to the growth of this sector.

Catalyst Index

Solution Types

CO2 Removal includes: 

  • Air: extracting carbon dioxide directly from ambient air
    • Liquid sorbent: utilizing specialized liquid solutions to extract carbon dioxide directly from ambient air
    • Solid sorbent: utilizing specialized solid materials to capture and isolate carbon dioxide from the air
    • Electrolytic: utilizing and electrochemical processes to extract carbon dioxide from ambient air
    • Membrane base: utilizing selective membranes to separate and capture carbon dioxide from the atmosphere. In this context, a membrane refers to a specialized barrier that allows certain molecules, such as carbon dioxide, to pass through while blocking others
  • Land: sequestering atmospheric carbon dioxide through the processes of photosynthesis and the accumulation of organic matter in soil
    • Biomass combustion with CO2 Capture (BiCRS): controlled burning of organic materials combined with carbon capture technology to actively remove carbon dioxide from the atmosphere
    • Biochar: production of a carbon-rich byproduct of biomass pyrolysis, serving as a stable soil amendment that sequesters carbon and enhances soil fertility
    • Trees and forests: Utilizing trees and forests, including afforestation and reforestation initiatives, harness the capacity of these ecosystems to capture and store carbon dioxide
    • Agriculture land and crops, soil and grasslands: employing sustainable practices such as cover cropping, reduced tillage, and rotational grazing to enhance carbon sequestration, enrich soil health, and contribute to effective carbon removal
    • Coastal restoration, mangroves, blue carbon: carbon captured and stored by coastal and marine ecosystems such as mangroves, seagrasses, and tidal marshes
    • Other terrestrial ecosystem restoration: a range of strategies such as wetland restoration, grassland enhancement, and soil conservation, all aimed at rehabilitating diverse landscapes for increased carbon sequestration and enhanced carbon removal
    • Terrestrial ecosystem restoration: revitalizing degraded land areas through reforestation, afforestation, and sustainable land management practices, fostering carbon sequestration
  • Ocean
    • Seaweed/kelp/macroalgae cultivation, seagrass cultivation: growing marine plants in aquatic environments, where they absorb carbon dioxide during photosynthesis and store it in their biomass and surrounding ecosystems
    • Phytoplankton, microalgae: cultivating tiny aquatic plants that thrive in water bodies and capture carbon dioxide through photosynthesis
    • Artificial upwelling/down-welling: the controlled manipulation of ocean currents to enhance the natural exchange of carbon dioxide between surface waters and deep-sea layers
    • Alkalinity enhancement: involves introducing alkaline substances into oceanic waters to raise their pH levels, facilitating the absorption of carbon dioxide from the atmosphere and promoting the formation of bicarbonate ions
    • Nutrient fertilization: refers to the application of specific nutrients to enhance plant growth and maximize carbon uptake, fostering increased photosynthesis and vegetation growth
    • Direct CO2 separation from seawater and or water splitting: advanced processes that employ specialized technologies to directly extract carbon dioxide from the water and then utilize electrolysis or other methods to split water molecules into oxygen and hydrogen
    • Biological ecosystem recovery and management, including fish and whale populations: comprehensive strategies aimed at revitalizing and maintaining diverse ecosystems, including the restoration and conservation of fish and whale populations, fostering biodiversity, enhancing carbon sequestration, and promoting sustainable ecological balance
  • Rocks
    • Enhanced weathering of ultramafic tailings: the controlled exposure of waste materials with high levels of reactive minerals to accelerate natural carbon mineralization processes
    • Mining rocks for CDR: extracting mineral-rich rocks and exposing them to the atmosphere to facilitate natural chemical reactions that absorb and immobilize carbon dioxide
    • Subsurface geologic sequestration via injection of CO2: the injection of carbon dioxide deep into geological formations, such as depleted oil and gas reservoirs or saline aquifers, to securely store and isolate the carbon dioxide from the atmosphere

Examples of CO2 Removal:

  • Producing biomass/biochar/algae 
  • Operating technology that removes carbon directly from the air
  • Sequestering carbon underground
CO2 Conversion includes:

  • Biological process: utilizing the metabolic capabilities of living organisms, such as microorganisms or plants, to transform carbon dioxide into organic compounds or biomass through various enzymatic or biochemical pathways
  • Electrochemical process: utilizing electricity to drive the transformation of carbon dioxide into valuable products
  • Thermochemical process: using heat-driven chemical reactions to convert carbon-containing compounds, such as carbon dioxide, into useful products or materials
  • Mineralization process: harnessing natural or engineered chemical reactions to transform carbon dioxide into stable mineral forms used for industrial purposes
  • Photochemical process: Using light energy to drive chemical reactions, typically involving carbon dioxide, to generate valuable compounds or fuels

Examples of CO2 Conversion:

  • Selling products made from converted CO2
  • Producing industrial substrate from converted CO2 for use in products and other applications
Point Source Capture includes:

  • Amine Capture: a chemical absorption method that uses amine compounds to selectively capture and separate carbon dioxide from industrial emissions
  • Membrane Separation: utilizing specialized membranes to selectively separate and concentrate carbon dioxide from industrial exhaust gasses

Examples of Point Source Capture:

  • Capturing carbon directly from the flue of a natural gas plant
Examples of Circular Carbon Market Infrastructure:

  • Project developer
  • Service provider
  • Consulting firm
  • Carbon credit marketplace
  • University or research institution
  • Selling a machine that captures carbon
  • Fintech/project financer

Managing Organizations


XPRIZE Foundation is the leading nonprofit organization solving the world’s grand challenges by creating incentive prize competitions that stimulate investment in research and development for the benefit of humanity.

Learn More


Launched by XPRIZE, the NRG COSIA Carbon XPRIZE challenged innovators world-wide to reimagine carbon-to-value products and their development, in the effort to catalyze large scale CO2 mitigation and inspire further action to combat climate change.

Learn More

The Team

Nicholas Eisenberger Advisor,
Circular Carbon Network
Ongeleigh Underwood Director,
Circular Carbon Network
Nikki Batchelor Executive Director, XPRIZE Carbon Removal,
XPrize Foundation
Laura Franzini Data Project Manager,
Circular Carbon Network
Lauren Magin Climate Research,
Circular Carbon Network
Annie Schonberger Community Coordinator,
Circular Carbon Network

Inquire About Job And
Volunteer Opportunities At CCN:

If you have relevant skill sets, professional experiences, and a passion for advancing the Circular Carbon economy, we’d love to hear from you. Please fill out the form below with more information about yourself and we’ll let you know if we have any openings that might be a potential fit.

    Our Partners

    We proudly partner with a growing number of aligned organizations around the world that share our passion for growing the circular carbon economy.

    Interested in collaborating?

    Contact Us