Solid Carbon
Solid Carbon Inc., founded in 2022 and based in McMinnville, Oregon, manufactures biochar-based concrete additives (BioLOCK® and BioPOZZ™) that permanently sequester biogenic carbon in concrete. It sells directly to concrete producers, contractors, architects, and project developers across residential, commercial, and hyperscale data center applications.
- Company typePrivate
- Founded2022
- HeadquartersMcminnville, United States
- Headcount1–10
- GTM typeB2B
- OfferingHardware or Manufacturing
What Solid Carbon does
Solid Carbon Inc. is a McMinnville, Oregon-based manufacturer founded in 2022 that develops and sells biochar-based concrete additives and supplementary cementitious materials designed to permanently sequester biogenic carbon within the concrete matrix. Its products, BioLOCK® (currently BioLOCK® 2.0, with the original BioLOCK® 1.0 being patent-pending) and BioPOZZ™, are engineered from waste biomass and are positioned to transform concrete — a material responsible for roughly 8% of global CO2 emissions — from a major emissions source into a carbon sink without sacrificing structural performance. The company claims to be the first in America to make concrete from biochar, and its technology also encompasses the destruction of PFAS and microplastics within the concrete system.
The company sells its additives directly to concrete batch producers, general contractors, architects, and project developers, with each project involving technical collaboration on mix design and dosage. Pricing is not publicly disclosed and is handled through inquiry-based contact forms for sample cubes, technical packages, and project-specific quotes; the company characterizes its go-to-market as consultative and project-driven, with proof points built around a portfolio of 14+ documented case studies spanning residential ADUs, driveways, wineries, skateparks, Passive House foundations, a 440-cubic-yard mass timber factory floor, and a hyperscaler Green Concrete Testing Program. Channel relationships with regional batch producers (Wilsonville Concrete Products, Parker Concrete, Gorge Crete) and global materials major Heidelberg Materials extend its reach, while provisional third-party-verified Environmental Product Declarations for BioLOCK® 2.0 and BioPOZZ™ (with full multi-impact EPDs targeted for Q2 2026) support embodied-carbon accounting and LEED-aligned specification.
Solid Carbon has raised $4 million from the Intrepid Oregon Fund (April 2024) and participated in the Third Derivative climate-tech accelerator (March 2025), and operates with a small core team (Founder/CEO John Mead, Director of R&D Sean Muir PhD, Product Development Engineer/Plant Manager Mac Whitaker, and Production & Operations Lead Steve Rist) from an in-house concrete lab in McMinnville. Its revenue model is one-time product sales of ingredient materials, scaled by project volume rather than recurring subscriptions, and the company is private with no publicly disclosed revenue, valuation, or employee headcount range beyond a stated 1–10 employees band.
Solid Carbon firmographics
Firmographics- Name
- Solid Carbon
- Legal name
- Solid Carbon Inc.
- Website
- https://solid-carbon.com
- Company type
- Private
- Founded year
- 2022
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- Solid Carbon Inc., founded in 2022 and based in McMinnville, Oregon, manufactures biochar-based concrete additives (BioLOCK® and BioPOZZ™) that permanently sequester biogenic carbon in concrete. It sells directly to concrete producers, contractors, architects, and project developers across residential, commercial, and hyperscale data center applications.
- Ownership category
- akta.pro rank
Solid Carbon industry classification
Industry- Product category
- Carbon-negative concrete additives
- NAICS
- Cement and Concrete Product Manufacturing (3273)
- akta.pro primary industry
- Sustainable Additives & Plasticizers (bio-plasticizers, stabilizers, compatibilizers) (IMANANAH)
Keywords
Where Solid Carbon is headquartered
LocationHeadquarters
- HQ city
- Mcminnville
- HQ country
- United States
- HQ region
- North America
Offices2 records
Markets served
Solid Carbon business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Technology or R&D, Personnel, Operations, Supply Chain, Marketing or Sales
Revenue model
- Carbon Negative Concrete Additives: Solid Carbon sells its proprietary biochar-based additives (BioLOCK® and BioPOZZ™) to concrete producers, general contractors, and project developers. These are ingredient products used in concrete mix designs. Revenue is generated through product sales proportional to project volume (cubic yards of concrete placed). The company ships BioLOCK 2.0 buckets to job sites and batch plants for integration into concrete pours.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Direct inquiry-based pricing for BioLOCK® and BioPOZZ™ additives |
Go-to-market motion2 records
Distribution channels2 records
Marketing channels6 records
Solid Carbon product offering
Product offeringCore offering
Solid Carbon manufactures and sells biochar-based concrete additives (BioLOCK® 2.0) and a carbon-negative alternative supplementary cementitious material (BioPOZZ™) that permanently sequester biogenic carbon within concrete matrices. These ingredient products are sold to concrete producers, general contractors, architects, and project developers who integrate them into mix designs, transforming traditional concrete into a carbon sink without sacrificing structural performance.
Product overview
Solid Carbon provides a portfolio of carbon-negative concrete additives and supplementary cementitious materials designed for permanent carbon sequestration in the built environment. The core offerings consist of BioLOCK® (available in 2.0 as the current flagship and 1.0 as an earlier patent-pending version), which is a carbon-sequestering admixture that transforms traditional concrete into a carbon sink, and BioPOZZ™, an alternative supplementary cementitious material (aSCM) that replaces cement while achieving carbon-negative status. Both products use biochar-based technology to permanently lock away biogenic carbon within the concrete matrix without compromising structural performance.
Differentiator
Problem solved
Functional benefit
Brands
- BioLOCK®: Carbon negative concrete additive product line that transforms concrete into a carbon sink. BioLOCK® 2.0 is the latest iteration of the flagship product.
- BioPOZZ™
Products and services
- BioLOCK® 2.0 Carbon-negative concrete admixture (latest-generation, patent-pending) that permanently locks biogenic carbon into the concrete matrix via waste-biomass-derived biochar, transforming traditional concrete into a carbon sink without sacrificing structural performance. Sold to concrete producers, general contractors, and developers for integration into mix designs across residential, commercial, and industrial applications. Includes recommended dosages, performance data, mix-design guidelines, and provisional EPD with third-party verified GWP data.
- BioPOZZ™ Carbon-negative alternative supplementary cementitious material (aSCM) that replaces cement in concrete mixes and transforms concrete into a carbon sink. Includes recommended replacement rates, performance data, mix-design guidelines, and a provisional EPD. Designed to be used alongside BioLOCK® in mix designs for compounded carbon reduction; sold to concrete producers and developers.
- BioLOCK® 1.0 First-generation, patent-pending carbon-negative concrete admixture engineered to permanently store stable biogenic carbon within the concrete matrix, transforming traditionally emissions-intensive concrete into a long-term carbon sink. Used in foundational projects including Remy Wines (catalyst project) and the New Energy Works factory floor. Superseded by BioLOCK® 2.0 as the current flagship product.
Quantifiable outcome
- Carbon sequestration: ~50 kg CO₂ equivalent per cubic yard of ready mix at 100 lbs BioLOCK dosage (Habitat for Humanity project)
- +5 more outcomes
Companies that use Solid Carbon
Customer profileNamed customers13 records
Segments4 records
Ideal customer profiles3 records
Solid Carbon technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
Solid Carbon partnerships and signals
Strategic signalPartnerships
Eight partnerships are on record, tiered core and minor.
- NRMCA / Build with StrengthcorePartnership with the National Ready Mixed Concrete Association's Build with Strength initiative as part of a wider goal to construct at least 50 sustainable concrete homes in 50 states. The Habitat for Humanity Gig Harbor project was delivered through this partnership, alongside Heidelberg Materials as the concrete supplier.
- Wilsonville Concrete ProductscoreConcrete batch producer that has worked with Solid Carbon on multiple projects including Remy Wines (catalyst project), West Linn Driveway (EcoPact Max cement-free system), and Piquette Hotel. Wilsonville Concrete Products integrates Solid Carbon ingredients into its concrete mixes for project deliveries.
- Heidelberg MaterialscoreGlobal building materials company that partnered with Solid Carbon on the Habitat for Humanity Gig Harbor project (supplying concrete for ICF forms) and the a/A Architecture Planters project (The Keets). Heidelberg Materials is a key production partner integrating Solid Carbon technology into its concrete supply.
- Wilsonville Concrete Products (EcoPact Max partnership)coreFor the West Linn Driveway project, Wilsonville Concrete Products delivered an Amrize cement-free concrete system utilizing EcoPact Max binder featuring activated slag, while Solid Carbon contributed carbon negative ingredients. This technology-stacking partnership demonstrates how complementary climate technologies can be combined in a single concrete mix.
- Gorge CreteminorRegional concrete producer in the Columbia River Gorge area that batched and delivered concrete enhanced with Solid Carbon's BioLOCK 2.0 for the Spring Street Passive House project in White Salmon, OR.
- R&H Construction / Parker Concrete / Waechter ArchitecturecoreFull project team for the Piquette Hotel: general contractor R&H Construction, concrete supplier Parker Concrete, and architect Waechter Architecture. All collaborated on delivering approximately 70 cubic yards of BioLOCK 2.0-enhanced foundation concrete.
- Sage Bolyard of Collective Concrete / Knife RivercoreSage Bolyard of Collective Concrete connected Solid Carbon with the Burnside Skatepark project and coordinated shotcrete application. Knife River generously poured the shotcrete on a Saturday, with dozens of volunteers shaping and smoothing the concrete for the Portland landmark expansion.
- Major Global Hyperscaler (unnamed)coreSolid Carbon was selected as a participant in a Green Concrete Testing Program on behalf of a major global hyperscaler aggressively pursuing low-carbon concrete solutions for data center demand worldwide. An independent third-party technical lead benchmarks embodied carbon and validates constructability. This is described as a pivotal proving ground and launchpad for scaling carbon-storing concrete globally.
Scale indicators6 records
Recent moves5 records
Expansion highlights6 records
Solid Carbon competitors and assessment
Company assessmentDirect peers
- Carbicrete: Manufacturer of cement-free concrete products made from steel slag and captured CO2, producing concrete masonry units and panels. Comparable in mission to decarbonize concrete via novel chemistry, though Carbicrete sells finished products while Solid Carbon sells additives.
- CarbonCure Technologies: Industry-leading concrete decarbonization company that injects captured CO2 into ready-mix concrete during batching, mineralizing it permanently. Most direct competitor to Solid Carbon in carbon-negative concrete additives, serving similar general contractors and concrete producers globally.
- Carbon Limit: Developer of CO2-absorbing concrete admixtures and technologies that reduce cement's carbon intensity during the pour. Targets the same concrete producer and contractor segment with a similar drop-in additive model.
- Solidia Technologies: Pioneer in CO2-cured concrete and cement, using a calcium silicate-based binder that sequesters CO2 during curing. Closely aligned with Solid Carbon's mission of carbon-negative concrete through alternative chemistries, serving precast and ready-mix markets.
- Blue Planet Systems: Converts captured CO2 into synthetic limestone aggregate for use in concrete. Direct peer in carbon-utilizing concrete materials, targeting infrastructure and construction applications with mineralized CO2 solutions.
- Brimstone (formerly CarbonCure Cement): Makes carbon-negative Portland cement using calcium silicate produced from industrial byproducts rather than limestone, eliminating process CO2 emissions. Comparable carbon-negative ambition in the cement/concrete value chain though focused on the cement input rather than concrete admixtures.
Emerging players
- Prometheus Materials: Developer of bio-cementitious materials using biomineralization to create cement-free concrete with significantly reduced carbon footprint. Comparable in mission of replacing traditional cement chemistry with low-carbon biological alternatives.
- CarbonOrO: Early-stage company developing biochar-based carbon-negative materials for use in concrete and other applications. Most direct technical peer to Solid Carbon in using biochar as the carbon sequestration mechanism in concrete.
- Biomason: Grows biocement-based building materials using microorganisms, producing concrete masonry without traditional cement. Adjacent in the bio-based concrete materials space but focuses on finished products rather than admixtures for ready-mix concrete.
Broad incumbents
- Heidelberg Materials: One of the world's largest building materials companies, producing cement, aggregates, and ready-mix concrete globally. Already a Solid Carbon channel partner on multiple projects and a broad incumbent whose low-carbon concrete portfolio (e.g., EcoPact) overlaps with Solid Carbon's value proposition.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks7 records
Key highlights7 records
Customer concentration
Solid Carbon social profiles
Digital presenceSolid Carbon compliance and trust
Trust signalCompliance2 records
Solid Carbon financial estimates
Financial estimateRevenue estimate
Valuation estimate
Solid Carbon leadership team
Management profileNumber of profiles
Profiles4 records
Solid Carbon funding detail
Funding detailFunding overview
Funding rounds1 record
Investors1 record
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Solid Carbon 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 Solid Carbon
What does Solid Carbon do?
Solid Carbon manufactures and sells biochar-based concrete additives (BioLOCK® 2.0) and a carbon-negative alternative supplementary cementitious material (BioPOZZ™) that permanently sequester biogenic carbon within concrete matrices. These ingredient products are sold to concrete producers, general contractors, architects, and project developers who integrate them into mix designs, transforming traditional concrete into a carbon sink without sacrificing structural performance.
Is Solid Carbon a public or private company?
Solid Carbon is a private company. It is classified as venture growth investor backed and is currently operating.
When was Solid Carbon founded?
Solid Carbon was founded in 2022. It employs 1 to 10 people.
Where is Solid Carbon based?
Solid Carbon is headquartered in Mcminnville, United States, in the North America region.
How does Solid Carbon make money?
One revenue line is on record: carbon Negative Concrete Additives.
Who are Solid Carbon's main competitors?
Direct peers on record are Carbicrete, CarbonCure Technologies, Carbon Limit, Solidia Technologies, Blue Planet Systems and Brimstone (formerly CarbonCure Cement). Emerging players are Prometheus Materials, CarbonOrO and Biomason. Heidelberg Materials is listed as a broad incumbent.
Does Solid Carbon have an API?
No public API is recorded for Solid Carbon.
What industry is Solid Carbon in?
Solid Carbon's product category is Carbon-negative concrete additives. Its primary akta.pro industry code is IMANANAH, Sustainable Additives & Plasticizers (bio-plasticizers, stabilizers, compatibilizers). Its NAICS code is 3273.