Capture6 Completes $27.5 Million Series A and Project Funding Round to Scale the Production of Fresh Water and Carbon Removal

The Funding Raise to Scale Carbon Removal and Water Recovery

The funding raise, led by Tetrad Corporation, and joined by Hyundai Motor Group's ZER01NE Ventures, Energy Capital Ventures, and Elemental Impact, among others, will support Capture6's technology for generating value from brine waste.

BERKELEY, Calif., March 11, 2025 /PRNewswire/ -- Capture6, whose integrated system converts waste brine into both fresh water and carbon removal solutions, announces $27.5 million in Series A and project funding. Capture6 was advised by financial advisor Rothschild & Co. for the capital raise, and the round was led by private equity firm Tetrad Corporation, with participation by Hyundai Motor Group's ZER01NE Ventures, Energy Capital Ventures, Elemental Impact, Bridge Investment, Sopoong Ventures, Third Derivative, Stan and Jane Rodbell, and the Jacob S. Shapiro Foundation. The Series A raise will allow Capture6 to advance core water recovery and carbon removal projects in its global pipeline.

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Capture6 recently partnered with Palmdale Water District to eliminate the need for up to 100 acres of brine ponds and save up to 40% in lifetime costs through the use of its technology at a new facility.

Ethan Cohen-Cole, CEO of Capture6, stated, "Climate change is creating water insecurity for much of the world's population, driving up demand for freshwater worldwide, and exacerbating the root problem as current methods of water treatment are carbon intensive. Our approach reduces waste streams from desalination and wastewater treatment while generating new water sources, lowering waste disposal costs, improving the efficiency of water production facilities, and decarbonizing projects simultaneously."

Capture6's integrated system connects directly with existing water infrastructure to reinvent carbon removal and water treatment simultaneously. Unlike traditional direct air capture (DAC) methods that use energy-intensive multi-step processes, Capture6's system transforms waste brine—normally expensive to dispose of—into a solvent that directly mineralizes CO₂ in a single step. This system creates valuable green chemicals for water facilities while recovering additional freshwater from brine that would otherwise be wasted. By addressing both climate and water security challenges within existing infrastructure, Capture6 offers a practical solution as the World Economic Forum projects freshwater demand to exceed supply by 40% by 2030.

Aaron Hilkemann, spokesperson and board member of Tetrad Corporation, added, "Numerous businesses and industries face wastewater disposal and freshwater acquisition challenges to their growth and long-term success. In Capture6, we see a company committed to addressing these challenges head-on. Their solution decreases the financial burden for businesses and builds momentum around environmentally beneficial methods of water production and waste treatment."

Danya Hakeem, VP of Portfolio at Elemental Impact, stated, "Fresh water scarcity demands we rethink traditional water infrastructure to ensure districts can provide affordable, clean water and remove harmful pollutants. We are proud to double down on our support for Capture6 and the Palmdale Water District project to help deliver meaningful cost savings while providing reliable, clean water to a community that needs it most."

The successful Series A raise demonstrates Capture6's ability to drive business and environmental value simultaneously.

Vic Pascucci, Managing Partner at Energy Capital Ventures, commented, "The technologies with the biggest potential impact are those that enable clean, safe, reliable, cost-effective energy. This funding elevates Capture6 as the industry leader in direct air capture, while simultaneously producing fresh water. After years of studying this space, we recognize Capture6 as a true game-changer through permanent carbon removal plus water security."

Capture6 has so far announced four water-positive carbon capture facilities across three continents. The company is developing a global pipeline, integrating with industrial partners in the U.S., Republic of Korea, New Zealand, Australia, and the Middle East. In 2024, the company also announced that Frontier facilitated a pre-purchase of 1,000 tons of carbon removal for Shopify and Stripe.

About Capture6

Capture6 is a water-positive carbon removal company based in California and New Zealand, leveraging its technology to support climate resilience and industrial decarbonization. The company develops and commercializes highly scalable approaches to remove carbon dioxide from the atmosphere. Capture6 is pioneering an approach that can be deployed today by repurposing existing industrial-scale technologies. Additionally, when coupled with desalination facilities, Capture6 can recover over 50% of freshwater from desalination waste brine for drinking and industrial purposes in the process of removing CO₂. This creates a meaningful synergy between carbon removal and water security. Learn more at capture6.org.

About Tetrad Corporation

Tetrad Corporation is a family-owned private investment and asset management company founded by the late Walter Scott Jr. Tetrad follows its founder's long-term investment strategy and has primarily focused its diversified portfolio in energy, telecommunication, real estate, banking, and agriculture. Learn more at tetradcorp.com.

About Hyundai Motor Group's ZER01NE Ventures

ZER01NE Ventures focuses on investing in promising startups that show great potential yet need further support to develop their services and products. Through open collaboration, mutually beneficial partnerships are established in crucial growth sectors, ranging from artificial intelligence & machine learning to micro-mobility.

About Energy Capital Ventures®

Energy Capital Ventures (ECV) is the only early-stage venture capital firm solely dedicated to the sustainability, resilience, and digital transformation of the natural gas industry.

About Elemental Impact

Elemental Impact is a nonprofit investing platform with 15 years of experience advancing innovative technology that creates lasting economic and environmental benefits across communities.

About Rothschild & Co, Global Advisory

Rothschild & Co is a family-controlled and independent group that has been at the center of the world's financial markets for over 200 years.