Prometheus Materials
Prometheus Materials produces ProZERO, a carbon-negative supplemental cement blend made via microalgae biomineralization, sold to ready-mix producers, construction firms, architects, and developers across the U.S. as a drop-in cement replacement.
- Company typePrivate
- Founded2021
- HeadquartersBoulder, United States
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What Prometheus Materials does
Prometheus Materials, founded in 2021 and headquartered in Longmont, Colorado, develops and sells ProZERO, a carbon-negative supplemental cement blend produced via a proprietary microalgae-based biomineralization process that mimics the natural formation of seashells and coral reefs. Microalgae grown in open raceway ponds capture CO2 through photosynthesis and are converted into biogenic limestone without the high-temperature kiln processes used in traditional cement production, with the sequestered carbon stored indefinitely in the final building product. ProZERO replaces a portion of cement in a one-to-one ratio up to 40%, achieving up to 121% carbon reduction relative to a CEM I baseline at maximum replacement while complying with ASTM C90, C129, C1157, and ASTM E84 standards.
The company serves construction firms, general contractors, architects, engineers, building owners and developers, and ready-mix producers, selling the ProZERO supplemental blend alongside ready-mix, flowable fill, and carbon-negative CMU block formulations. Revenue is generated through direct enterprise sales of the supplemental blend (FOB Longmont, CO, shipped nationally via trailer and bulker), project-based pricing negotiated per mix design and replacement percentage, and a licensed material solutions model that allows third-party concrete manufacturers to produce carbon-negative products under license. Its go-to-market combines enterprise field sales with channel partnerships through major contractors (Suffolk, Turner, Skanska, Mortenson, Clayco, Hensel Phelps) and ready-mix producers (Cemstone, Cemex, Basalite), supported by design collaborations with architecture firms such as Skidmore, Owings & Merrill. The company is venture-backed (Sofinnova Partners-led Series A in 2022), participates in a $10M DOE measurement and verification program with NREL, ORNL, and LLNL, and holds a 10-year exclusive microalgae supply partnership with Green Stream Algae covering North and South America.
Prometheus Materials firmographics
Firmographics- Name
- Prometheus Materials
- Legal name
- Prometheus Materials, Inc
- Website
- https://prometheusmaterials.com
- Company type
- Private
- Founded year
- 2021
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Prometheus Materials produces ProZERO, a carbon-negative supplemental cement blend made via microalgae biomineralization, sold to ready-mix producers, construction firms, architects, and developers across the U.S. as a drop-in cement replacement.
- Ownership category
- akta.pro rank
Prometheus Materials industry classification
Industry- Product category
- Carbon-Negative Cement and Concrete Materials
- NAICS
- Cement and Concrete Product Manufacturing (3273), Ready-Mix Concrete Manufacturing (327320)
- SIC
- Plastic Materials, Synth Resins & Nonvulcan Elastomers (2821)
- akta.pro primary industry
- Biodegradable Additives & Masterbatches (pro-oxidant-free, bio-based modifiers) (IMAEAOAD)
Keywords
Where Prometheus Materials is headquartered
LocationHeadquarters
- HQ city
- Boulder
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
Prometheus Materials business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Operations, Technology or R&D, Personnel, Marketing or Sales, Infrastructure
Revenue model
- ProZERO Supplemental Blend Product Sales: Prometheus Materials generates revenue through the sale of its ProZERO carbon-negative supplemental cement blend. The product is sold to ready-mix producers, construction firms, and concrete manufacturers. It substitutes a portion of cement in a 1:1 ratio up to 40%, with pricing determined per project through direct sales consultation. The company ships product nationally across the U.S. via trailer or bulker, with FOB Longmont, CO terms.
- Licensed Material Solutions for Concrete Manufacturers: Prometheus Materials offers licensed material solutions for existing concrete manufacturers, enabling them to produce carbon-negative products under license. This allows the company to scale its technology through multiple manufacturing partners without building all production capacity in-house.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Unit Pricing | Pay-as-you-go | Project-based pricing determined by cement replacement percentage and volume requirements |
Go-to-market motion1 record
Distribution channels3 records
Marketing channels5 records
Prometheus Materials product offering
Product offeringCore offering
Prometheus Materials develops and manufactures ProZERO™, a carbon-negative supplemental cement blend produced through a proprietary microalgae-based biomineralization process. The product replaces a portion of Portland cement in a 1:1 ratio (up to 40%) in ready mix, flowable fill, and concrete masonry unit (CMU) applications, and is sold as a drop-in replacement to construction firms, ready-mix producers, architects, engineers, and building owners. The company also offers licensed material solutions that enable existing concrete manufacturers to produce carbon-negative products under license.
Product overview
Prometheus Materials offers ProZERO™, a carbon-negative cement replacement product line consisting of supplemental blends, ready mix solutions, flowable fill, and carbon negative concrete masonry blocks. The core technology uses microalgae-based biomineralization to create a sustainable alternative to traditional Portland cement. ProZERO products integrate into existing concrete production processes as drop-in replacements, allowing construction firms to reduce embodied carbon without changing infrastructure or operations. The product portfolio includes ready mix (up to 40% cement replacement with superior finishability), flowable fill for backfill applications, and CMU blocks eliminating approximately 100% of embodied carbon.
Differentiator
Problem solved
Functional benefit
Brands
- ProZERO: Carbon-negative supplemental cement blend that replaces a portion of cement in a one-to-one ratio, designed to reduce embodied carbon in concrete construction. Available in ready mix, flowable fill, and carbon-negative blocks (CMUs) formulations.
Products and services
- ProZERO Supplemental Blend The first carbon-negative supplemental blend designed to replace a portion of cement in a one-to-one ratio. Achieves meaningful carbon reduction with less material, enabling users to keep the cement and lose the carbon without disrupting the cement production process. Properties comparable to traditional cement with improved finishability and compliance with industry standards (ASTM C90, C129, C1157, E84).
- ProZERO Ready Mix Carbon negative or low embodied carbon ready mix concrete solution where ProZERO replaces a portion of cement in a 1:1 ratio up to 40%, featuring superior finishability and improved rheology. Ranges from low carbon to carbon negative to suit sustainability objectives and project budgets, with properties comparable or superior to traditional cement.
- ProZERO Flowable Fill A specific type of ready mix optimized for quick placement and finishing, ideal for backfill, structural fill, trenches, and storage tanks. Maintains comparable slump and removability modulus to traditional flowable fill with compressive strengths from 150 PSI.
- ProZERO Carbon Negative Blocks Concrete masonry units (CMUs) that eliminate approximately 100% of embodied carbon found in traditional CMUs. Complies with ASTM C90 and C129 specifications with compressive strength of 3,310 PSI average (required 2,000 PSI), validated by independent third-party testing laboratory CTL Thompson.
- Licensed Material Solutions for Concrete Manufacturers Licensed material solutions enabling existing concrete manufacturers to produce carbon-negative products under license, allowing Prometheus Materials to scale its technology through multiple manufacturing partners without building all production capacity in-house.
Quantifiable outcome
- 121% carbon reduction (carbon negative) at 40% ProZERO replacement relative to CEM I baseline
- +6 more outcomes
Companies that use Prometheus Materials
Customer profileNamed customers6 records
Segments5 records
Ideal customer profiles5 records
Prometheus Materials technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
Prometheus Materials partnerships and signals
Strategic signalPartnerships
21 partnerships are on record, tiered core and supporting.
- Green Stream Algae (GSA)coreA 10-year strategic partnership with two five-year extension options, making GSA the exclusive microalgae and biomineral supplier in North America and South America. GSA, which previously served as a supplier, has now also become a strategic partner and investor in Prometheus Materials. The partnership secures long-term supply of core biological inputs for ProZERO and supports the scale-up of low-carbon cement technology.
- Skidmore, Owings & Merrill (SOM)coreLandmark collaboration on the New York Climate Exchange's climate campus on Governors Island. SOM provided global design expertise, selecting ProZERO as a building material for the climate campus. SOM is also referenced in the Chicago Bio-Block Spiral project. ProZERO has been showcased at the Exchange since 2024 and is being installed on the site as a benchmark for low-carbon construction.
- Skanska USAcoreConstruction partner in the New York Climate Exchange collaboration, providing construction leadership for the climate campus project. Skanska USA contributed to the installation of ProZERO carbon negative cement and concrete on the Governors Island site.
- D'Annunzio Group Inc.supportingSpecialty contracting partner in the New York Climate Exchange collaboration, contributing to the installation of ProZERO carbon negative cement and concrete on the Governors Island climate campus.
- Brothers II ConcretesupportingReady-mix concrete partner in the New York Climate Exchange collaboration, supplying concrete incorporating ProZERO for the Governors Island climate campus project.
- U.S. Department of Energy / National Renewable Energy Laboratory (NREL)corePrometheus Materials was awarded a role in a $10M DOE grant, with NREL, ORNL, and LLNL collaborating to establish methods for measuring, reporting, and verifying CO2 removal and sequestration in cement and concrete. Funded by the Bipartisan Infrastructure Law Technology Commercialization Fund administered by DOE Office of Technology Transitions.
- Oak Ridge National Laboratory (ORNL)coreCollaborating with Prometheus Materials as part of a $10M DOE grant to establish methods for measuring, reporting, and verifying CO2 removal and sequestration in cement and concrete.
- Lawrence Livermore National Laboratory (LLNL)coreCollaborating with Prometheus Materials as part of a $10M DOE grant to establish methods for measuring, reporting, and verifying CO2 removal and sequestration in cement and concrete.
- Rowan Digital InfrastructurecoreCollaborated on a hyperscaler data center project in Maryland with Suffolk Construction and regional ready-mix partners. This represents the largest above-ground ProZERO deployment to date with 300+ cubic yards placed and 45% reduction in GWP achieved.
- Suffolk ConstructioncoreConstruction partner on the Maryland hyperscaler data center project with Rowan Digital Infrastructure. Suffolk Construction collaborated on the largest above-ground ProZERO deployment, placing 300+ cubic yards of concrete.
- MortensonsupportingListed as a strategic partner/client of Prometheus Materials on the company website. Mortenson is a major U.S. construction and development firm.
- Turner ConstructionsupportingListed as a strategic partner/client of Prometheus Materials on the company website. Turner Construction is one of the largest construction management firms in the U.S.
- ClaycosupportingListed as a strategic partner/client of Prometheus Materials on the company website. Clayco is a national construction firm specializing in industrial, commercial, and residential projects.
- CemstonesupportingListed as a strategic partner/supplier on the Prometheus Materials website. Cemstone is a ready-mix concrete producer.
- Hensel PhelpssupportingListed as a strategic partner/client of Prometheus Materials on the company website. Hensel Phelps is a construction and development firm.
- BasalitesupportingListed as a strategic partner/supplier on the Prometheus Materials website. Basalite is a manufacturer of concrete masonry units.
- CEMEXsupportingListed as a strategic partner/client of Prometheus Materials on the company website. CEMEX is a global building materials company.
- Brannan CompaniessupportingListed as a strategic partner/client on the Prometheus Materials website.
- DG (Design Group)supportingListed as a strategic partner/client on the Prometheus Materials website.
- Concrete StrategiessupportingListed as a strategic partner on the Prometheus Materials website. Concrete Strategies is a concrete construction firm.
- Prime DatasupportingListed as a strategic partner/client on the Prometheus Materials website. Prime Data is a data center developer.
Scale indicators9 records
Recent moves6 records
Expansion highlights5 records
Prometheus Materials competitors and assessment
Company assessmentDirect peers
- Brimstone: Brimstone produces carbon-negative Portland cement from calcium silicate made with CO2 captured from industrial sources. It targets the same low-carbon/carbon-negative cement market as Prometheus with a competing full-substitute technical approach rather than a supplemental blend.
- Biomason: Biomason manufactures biocement-based masonry units using microorganisms, closely mirroring Prometheus's biologically inspired, carbon-sequestering approach. Both companies target concrete masonry and sustainable construction with biologically produced binders.
- Fortera: Fortera produces a low-carbon cement from industrial CO2 using a calcium silicate process and is scaling commercial production in the U.S. It targets the same ready-mix and concrete producer customers as Prometheus with a similar value proposition of drop-in cement replacement.
- CarbonCure Technologies: CarbonCure injects captured CO2 into fresh ready-mix concrete to reduce cement content and permanently mineralize carbon. It directly competes with Prometheus in the carbon-reduced concrete space, selling through ready-mix producers and targeting similar commercial construction and infrastructure customers.
- Solidia Technologies: Solidia Technologies offers a low-carbon cement and concrete system based on a non-hydraulic calcium silicate binder cured with CO2. It is comparable to Prometheus as a competing technical pathway into the sustainable cement market.
- Sublime Systems: Sublime Systems produces low-carbon cement using an electrochemical process that avoids traditional kiln emissions. It competes with Prometheus for the same architects, developers, and ready-mix customers seeking to decarbonize structural concrete.
- CarbonCure (carbon removal credits): Beyond concrete, CarbonCure also sells third-party-verified carbon removal credits generated from its concrete mineralization process, an emerging monetization path that Prometheus may pursue as MRV standards mature.
Broad incumbents
- Holcim: Holcim is one of the world's largest building materials companies and has launched its own low-carbon and carbon-captured cement products (e.g., ECOPact and Susteno). It competes with Prometheus through scale, established customer relationships, and internal R&D in sustainable cement.
- Ecocem: Ecocem is an established European producer of low-carbon cement and ground granulated blast-furnace slag (GGBS) blends serving global infrastructure and ready-mix customers. It is comparable as a broad, scaled incumbent in the low-carbon cement space that Prometheus will increasingly compete against.
Emerging players
- Carbon Upcycling Technologies: Carbon Upcycling Technologies produces CO2-infused supplementary cementitious materials and concrete additives. It is comparable to Prometheus as an emerging CO2-utilizing cement additive player targeting ready-mix and infrastructure customers.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks7 records
Key highlights7 records
Customer concentration
Prometheus Materials social profiles
Digital presencePrometheus Materials compliance and trust
Trust signalCompliance5 records
Prometheus Materials financial estimates
Financial estimateRevenue estimate
Valuation estimate
Prometheus Materials leadership team
Management profileNumber of profiles
Profiles12 records
Prometheus Materials funding detail
Funding detailFunding overview
Funding rounds2 records
Investors5 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Prometheus Materials M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Prometheus Materials
What does Prometheus Materials do?
Prometheus Materials develops and manufactures ProZERO™, a carbon-negative supplemental cement blend produced through a proprietary microalgae-based biomineralization process. The product replaces a portion of Portland cement in a 1:1 ratio (up to 40%) in ready mix, flowable fill, and concrete masonry unit (CMU) applications, and is sold as a drop-in replacement to construction firms, ready-mix producers, architects, engineers, and building owners. The company also offers licensed material solutions that enable existing concrete manufacturers to produce carbon-negative products under license.
Is Prometheus Materials a public or private company?
Prometheus Materials is a private company. It is classified as venture growth investor backed and is currently operating.
When was Prometheus Materials founded?
Prometheus Materials was founded in 2021. It employs 11 to 50 people.
Where is Prometheus Materials based?
Prometheus Materials is headquartered in Boulder, United States, in the North America region.
How does Prometheus Materials make money?
Two revenue lines are on record. ProZERO Supplemental Blend Product Sales are the primary driver. The others are licensed Material Solutions for Concrete Manufacturers.
Who are Prometheus Materials's main competitors?
Direct peers on record are Brimstone, Biomason, Fortera, CarbonCure Technologies, Solidia Technologies, Sublime Systems and CarbonCure (carbon removal credits). Broad incumbents are Holcim and Ecocem. Carbon Upcycling Technologies is listed as an emerging player.
Does Prometheus Materials have an API?
No public API is recorded for Prometheus Materials.
What industry is Prometheus Materials in?
Prometheus Materials's product category is Carbon-Negative Cement and Concrete Materials. Its primary akta.pro industry code is IMAEAOAD, Biodegradable Additives & Masterbatches (pro-oxidant-free, bio-based modifiers). Its NAICS code is 3273 and its SIC code is 2821.