United Statesheirloomcarbon.com
Its roles Owner Technology / equipment supplier
Heirloom Carbon Technologies, Inc. is a Delaware-incorporated climate technology company headquartered in Brisbane, California, that develops and deploys direct air capture (DAC) technology to remove carbon dioxide from the atmosphere.
The company utilizes a limestone-based mineralization process that accelerates natural carbon absorption, capturing CO2 in days instead of years before separating it for permanent storage underground or in products such as concrete. This approach aims to provide scalable, low-cost carbon removal solutions capable of reaching billion-ton annual volumes.
Heirloom operates the United States' first commercial DAC facility in Tracy, California, with an initial capacity of 1,000 metric tons of CO2 per year. It is also developing two facilities near Shreveport, Louisiana, at the Port of Caddo-Bossier, with combined capacity targeting up to 320,000 tons annually, including participation in the U.S. Department of Energy's Project Cypress DAC Hub.
Founded in 2020, the privately held company is backed by prominent climate investors including Breakthrough Energy Ventures and has secured major carbon removal purchase agreements, notably with Microsoft. It positions itself among leading players in the emerging direct air capture industry focused on verifiable and permanent atmospheric carbon removal.
chemXplore tracks 2 projects involving Heirloom, of which one is active.
Besides this one, the record holds 1 completed project.
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