Maritime Startups Tackle Carbon Capture for Concrete

Greentown Labs, the world's largest climate tech and energy incubator, has announced the startup cohort for its 'Greentown Go Build 2026' program focused on CO₂-mineralization technologies for concrete-aggregate production. The program is supported by Amazon and the Global CO2 Initiative. According to the press release, the five selected startups will participate in the open-innovation program to advance their solutions for capturing and mineralizing carbon dioxide to create sustainable concrete aggregates. This aligns with growing industry efforts to decarbonize the construction sector, which accounts for a significant portion of global emissions. 'Concrete production is a major contributor to climate change, so finding ways to reduce its carbon footprint is critical,' said Emily Reichert, CEO of Greentown Labs. 'We're excited to support these innovative startups as they work to commercialize CO2-mineralization technologies that can transform the way we build.' The startups joining the program are: - CarbonCure Technologies (Canada) - Develops CO2-mineralization solutions for concrete production - Solidia Technologies (USA) - Offers low-carbon cement and concrete technologies - Carbicrete (Canada) - Creates carbon-negative concrete using industrial waste and captured CO2 - Seaborg Technologies (Denmark) - Developing molten salt nuclear reactors to power carbon capture - Heirloom Carbon Technologies (USA) - Engineered mineral solutions for atmospheric carbon removal This initiative aligns with growing momentum around carbon capture and storage (CCS) technologies, which are seen as essential for meeting global emissions reduction targets in hard-to-abate sectors like construction. As the maritime industry also works to decarbonize, innovations emerging from programs like Greentown Go Build could have important applications for sustainable port infrastructure, shipbuilding, and more.