Products of Heimdal

Company Profile

Heimdal, founded in 2020 and headquartered in Kailua-Kona, Hawaii, is an innovative company focused on developing carbon removal technologies. Heimdal builds machines that extract calcium and magnesium carbonate from seawater, which are used to create carbon-negative concrete and other building materials. This technology addresses the significant CO2 emissions from traditional concrete production by providing sustainable materials for the construction industry. Heimdal collaborates with major multinational companies in the glass and concrete industries to supply carbon-negative limestone for manufacturing​(

Product Range

• CO2 Removal Technology: Heimdal utilizes seawater alkalinization to extract calcium and magnesium carbonates, which are key ingredients in carbon-negative glass and concrete.
• Pilot Facilities: The company operates a pilot plant in Hawaii, partnered with a desalination facility, to scale up and further refine this innovative technology​(

Why Choose Heimdal?

Heimdal offers a groundbreaking solution to one of the most pressing climate challenges: CO2 emissions from the concrete industry. By using their unique technology, they not only capture CO2 but also produce building materials that help reduce the carbon footprint of the construction sector. Backed by investors like Y Combinator and Cathexis Ventures, Heimdal is positioning itself as a leader in carbon-negative production​(

Official Heimdal Website