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§ Private Profile · Berkeley, CA, USA
Climate technology company providing direct air capture and freshwater recovery from waste brine for industrial decarbonization.
Based in Berkeley, California, Capture6 develops an integrated direct air capture system that removes atmospheric carbon dioxide while simultaneously recovering freshwater from industrial waste brine. The company repurposes existing commercial technologies to convert waste from desalination and wastewater treatment facilities into a carbon-mineralizing solvent, recovering over fifty percent of the freshwater from the processed brine. Capture6 is currently developing four water-positive carbon removal facilities across three continents and has secured a pre-purchase agreement for 1,000 tons of carbon removal with corporate buyers Shopify and Stripe through the Frontier initiative. As of March 2025, the enterprise has raised $27.5 million in Series A and project funding from a syndicate of institutional investors including Tetrad Corporation, Hyundai Motor Group, and Energy Capital Ventures. The climate technology organization was founded by chief executive officer Dr. Ethan Cohen-Cole.
Capture6 has raised $36.0M across 2 funding rounds.
Capture6 has raised $36.0M in total across 2 funding rounds.
Capture6 has raised $36.0M across 2 funding rounds. Most recently, it raised $28.0M Series A in March 2025.
| Date | Round | Lead Investors | Other Investors | Status |
|---|---|---|---|---|
| Mar 1, 2025 | $28M Series A | Tetrad Corporation | 8090 Industries, Energy Capital Ventures | Announced |
| Jul 7, 2023 | $8M Grant | — | — | Announced |
Capture6 has raised $36.0M in total across 2 funding rounds.
Capture6's investors include Tetrad Corporation, 8090 Industries, Energy Capital Ventures.
Capture6 is a technology company specializing in scalable, integrated solutions that simultaneously remove carbon dioxide (CO2) from the atmosphere and recover fresh water from saltwater or brine waste streams. Their proprietary process chemically converts saltwater into sodium hydroxide, a solvent that captures CO2, while also generating clean freshwater as a valuable byproduct. This dual approach addresses climate change by enabling permanent carbon removal and enhances water security, serving industries, utilities, governments, and communities facing water stress and carbon reduction mandates. Capture6’s modular, rapidly deployable technology offers high carbon capture efficiency (up to 95%) and multiple revenue streams, including carbon credits, clean water, and industrial byproducts, positioning the company for significant growth and impact in the climate tech and water sectors[1][2][3][4].
Founded in 2021, Capture6 was established by a team including CEO Ethan Cohen-Cole and President Luke Shors, with expertise spanning technology development and strategic business operations. The company emerged from the recognition that existing carbon capture technologies were either too costly or slow to scale, and that water treatment facilities generate brine waste that could be repurposed for carbon removal. Early traction came from demonstrating that their electrochemical direct air capture (DAC) process could be integrated with existing water infrastructure to produce both carbon removal and freshwater, attracting partnerships with utilities and clean energy providers. Winning awards like the World Water Challenge 2023 and securing funding rounds have validated their approach and accelerated commercialization[2][4].
Capture6 rides the critical global trend of integrating climate mitigation with resource recovery, addressing two urgent challenges: atmospheric carbon removal and water scarcity. The timing is crucial as regulatory pressure and market demand for carbon removal solutions intensify alongside growing water stress worldwide. By leveraging existing commercial technologies and infrastructure, Capture6 accelerates deployment timelines compared to nascent DAC methods that require decades to scale. Their approach aligns with the circular economy and green industrial activities, enabling enhanced water recovery, lithium extraction, geothermal energy, and green hydrogen production, thus influencing the broader ecosystem toward sustainable industrial decarbonization and climate adaptation[1][2][5][6].
Capture6 is poised to expand rapidly, targeting 100 commercial-scale facilities by 2030 with an annual CO2 capture capacity exceeding 10 million tons. Future trends shaping their journey include increasing integration of AI for system optimization, broader adoption of modular carbon removal technologies, and deeper collaboration with renewable energy sectors. As carbon markets mature and water scarcity intensifies, Capture6’s dual-benefit model will likely gain prominence, potentially setting new standards for water-positive direct air capture. Their continued innovation and strategic partnerships will be key to scaling impact and influencing global carbon removal and water resilience efforts[2][4].