Capture6, a Berkeley, CA-based company whose integrated system converts waste brine into both fresh water and carbon removal solutions, raised $27.5m in Series A and project funding.
The round was led by Tetrad Corporation, with participation from 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 company intends to use the funds to advance core water recovery and carbon removal projects in its global pipeline.
Led by CEO Ethan Cohen-Cole, Capture6 provides an integrated system that connects directly with existing water infrastructure to reinvent carbon removal and water treatment simultaneously. The 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.
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.
