Colorado-based Prometheus Materials produces carbon-zero microalgae-based building materials by using a proprietary patent-pending photosynthetic bio-cementation process. The company grows “cyanobacteria” using water, which then uses photosynthesis to convert sunlight and carbon dioxide into minerals. The company claims its product offers similar mechanical, physical, and thermal properties to traditional cement-based products, reaching compressive strengths of up to 2,000 lbs per square inch (psi). As of 2022, the company claimed that the product could reduce carbon emissions by 90%, with a 100% reduction achievable within the following two years. In January 2023 , Prometheus Materials received foundational certifications for its bio-cement from ASTM C129 for non-loadbearing concrete masonry units (CMUs) and ASTM C90 for loadbearing CMUs.
As of June 2022, Prometheus Materials produced bio-based masonry units (concrete blocks) at a commercial scale at its production facility in Longmont, Colorado, and planned to target architects, engineers, property and facility developers, and other stakeholders in the construction industry. At the time, the company reported that it had completed pilot testing with an undisclosed large-scale construction company and planned to begin commercial production of other bio-based building materials including precast bio-based roofing tiles, wall panels, sound barriers, and bio-based ready-mix concrete within the following two years.
During mid 2023, the company announced that its bio-concrete product line has a noise reduction coefficient (NRC) of 0.60, indicating 60% sound absorption— 12x that of traditional concrete. The company reported plans to commercialize the products during the first half of 2024.
Funding and financials
In June 2022 , the company raised USD 8 million in Series A funding led by Sofinnova Partners; Microsoft Climate Innovation Fund; and Skidmore, Owings, and Merrill (SOM). The company planned to use the funds to produce carbon-zero masonry units (concrete blocks) and other carbon-zero building materials on a commercial scale.
By using this site, you agree to allow SPEEDA Edge and our partners to use cookies for analytics and personalization. Visit our privacy policy for more information about our data collection practices.