Carbon mineralization: which startup is ahead?
In our CCUS market deck, you will find everything you need to understand the market
SUMMARY
CarbonCure is the carbon mineralization startup ahead today. Its lead comes from repeated commercial use across hundreds of concrete plants, more than 11 million truckloads and a level of operating repetition that no rival currently matches.
The field is really three markets sharing one label: concrete curing and mixing, mineralized construction materials, and underground rock storage. A company can dominate one of those segments without being the overall leader.
CarbonCure does not promise the deepest reduction per tonne of product. Its advantage is simpler and harder to fake: producers already use the system during normal operations, across thousands of mix designs and millions of deliveries.
Fortera and neustark are the only credible chasing group, but they are building very different businesses. Fortera is trying to make mineralized cement at much larger plants, while neustark is assembling a distributed network that sells certified carbon removal.
The headline scale figures are not directly comparable. Truckloads of concrete, tonnes of cement capacity, tonnes of material output and verified removal credits measure different things, so the ranking gives more weight to completed, repeated activity than to nameplate capacity.
Neustark has the strongest disclosed removal order book, including a six-year Microsoft agreement, but delivery still trails sales by a wide margin. The order book proves demand; issued credits prove execution.
Retrofit businesses have the clearest path to replication. CarbonCure, neustark, CarbiCrete and Carbonaide can expand through assets owned by customers or partners, while Fortera, CarbonBuilt and Carbon Upcycling need heavier site-by-site capital.
CarbonBuilt and CarbiCrete make some of the strongest product-level carbon claims in the field. Their challenge is breadth: excellent masonry or precast products do not yet equal CarbonCure’s reach across the wider concrete market.
The weakest evidence across the sector is financial. Revenue, margins, utilization, customer retention and plant payback are mostly private, so claims about attractive unit economics deserve less confidence than operating sites, delivered products and verified credits.
CarbonCure keeps the top spot unless usage stalls or buyers start demanding much deeper reductions from every tonne of concrete. Fortera could close the gap through reliable large-scale cement production; neustark could do it by turning contracted removals into issued tonnes much faster.
This market map, featured in our CCUS market deck, highlights top companies and startups in the CCUS market
Which carbon mineralization startups belong in this comparison?
The carbon mineralization race currently has thirteen serious startups, but they are selling three very different things.
CarbonCure, CarbiCrete, CarbonBuilt and Carbonaide change how concrete is mixed or cured. Fortera, Carbon Upcycling, Paebbl, MCi Carbon, Blue Planet and Seratech turn CO₂ and minerals into cement substitutes, aggregates or other construction materials. Neustark mineralizes CO₂ inside demolished concrete and industrial waste, while Carbfix and 44.01 inject it into reactive rock underground.
We include companies only when carbon mineralization sits at the heart of the product and the technology has moved beyond basic laboratory research.
That leaves out low-carbon cement startups such as Sublime Systems, Brimstone and Terra CO2, whose main processes do not rely on captured CO₂. We also exclude Lithos, UNDO and Eion because spreading crushed rock on farmland creates a different market with different customers, economics and measurement problems.
OCO Technology sits outside our core field for another reason. The company started operating in 1999 and now resembles an established waste-processing business more than a startup.
Funding totals remain approximate. Some sources count only equity, while others add grants, loans, awards and project financing. Carbfix, in particular, has received far more public and project capital than a typical venture-backed startup.
| Startup | What it does | Approximate cumulative funding |
|---|---|---|
| CarbonCure | Injects CO₂ into ready-mix concrete | $169 million |
| Fortera | Turns cement-plant CO₂ into low-carbon cement | $141 million |
| Carbfix | Mineralizes injected CO₂ in underground basalt | About €118 million, largely public and project capital |
| neustark | Stores CO₂ in demolished concrete and mineral waste | About $69 million to $71 million |
| Carbon Upcycling | Produces mineralized cement substitutes from industrial residues | About $63 million |
| 44.01 | Mineralizes injected CO₂ in peridotite rock | About $42 million |
| MCi Carbon | Converts CO₂ and mineral feedstocks into industrial materials | About $40 million |
| Paebbl | Produces carbon-storing cement substitutes | About $33 million |
| Blue Planet | Produces synthetic limestone aggregate from CO₂ | About $27 million to $46 million, depending on the source |
| CarbiCrete | Makes cement-free concrete using steel slag and CO₂ | About $26 million |
| CarbonBuilt | Produces low-carbon masonry using mineralized CO₂ | About $14 million |
| Carbonaide | Installs CO₂-curing systems in precast factories | About €5.6 million |
| Seratech | Produces an olivine-based cement substitute using CO₂ | About $0.3 million publicly disclosed |
Is CarbonCure still the clear carbon mineralization leader today?
Yes. CarbonCure still leads carbon mineralization overall, and no rival is close on repeated commercial use.
CarbonCure producers have delivered more than 11 million truckloads of concrete made with the company’s systems. Hundreds of installations now operate across more than twenty countries, supplying thousands of residential, commercial and infrastructure projects.
That puts CarbonCure in a different position from startups running one commercial factory or a collection of small sites. Its technology has become part of normal production for concrete companies that need to deliver consistent strength, price and schedules every day.
The closest challengers lead narrower parts of the market. Fortera has the strongest operating position in mineralized cement. Neustark has built the largest distributed network focused on certified carbon removal. Carbfix has the longest track record in underground mineralization.
CarbonBuilt and CarbiCrete are also selling real products. Carbon Upcycling, Paebbl, Carbonaide and MCi Carbon have reached industrial equipment or commercial construction projects, but they have yet to repeat those deployments across a large customer base.
If you want more recent data on this point, please see our latest CCUS market report.
As this chart shows, and as featured in our CCUS market deck, search interest in carbon credits has grown significantly
Who has deployed carbon mineralization at the biggest real-world scale?
CarbonCure has the largest real-world carbon mineralization footprint and the biggest completed climate impact.
CarbonCure’s partners have produced more than 11 million truckloads and reported over 777,000 tonnes of cumulative CO₂ savings. That total combines CO₂ permanently mineralized inside concrete with emissions avoided when producers use less cement.
The average works out to roughly 67 kilograms of reported savings per load. The reduction from one delivery looks modest. Repeating it millions of times has created more completed impact than any rival has publicly reported.
Neustark has the closest distributed physical network, with 47 capture and storage sites operating across Europe. Its latest detailed impact figure exceeded 5,700 tonnes of net removals. The company stores around ten kilograms of CO₂ in a tonne of demolished concrete under normal industrial conditions, with higher rates possible in some materials.
Fortera’s Redding facility can manufacture 15,000 tons of ReAct cement and capture around 6,600 tons of CO₂ each year. CarbonBuilt controls a masonry factory capable of producing more than 80,000 tons of concrete products annually.
MCi Carbon’s newly opened Myrtle refinery can mineralize around 2,500 tonnes of CO₂ into roughly 10,000 tonnes of materials each year. Carbon Upcycling’s first commercial facility is being built for up to 30,000 tonnes of annual cement-substitute production.
These numbers need care. A tonne of finished concrete, a tonne of cement capacity and a tonne of verified carbon removal are not the same thing.
| Startup | Operating footprint | Best current scale figure | What the company has proved |
|---|---|---|---|
| CarbonCure | Hundreds of concrete plants | 11 million-plus truckloads | Repeated use across a large customer network |
| neustark | 47 European sites | More than 5,700 tonnes net removed at its latest detailed count | A repeatable distributed removal model |
| CarbonBuilt | One owned factory | More than 80,000 tons of annual product capacity | Commercial manufacturing under direct control |
| Fortera | One commercial cement facility | 15,000 tons of annual cement capacity | Mineralized cement production at an operating plant |
| MCi Carbon | One industrial demonstration refinery | About 2,500 tonnes of annual CO₂ mineralization capacity | Continuous industrial customer trials |
| Carbon Upcycling | First commercial facility under construction | Up to 30,000 tonnes of annual material capacity | Construction and financing, with production still to come |
Which carbon mineralization startup has the strongest customer demand?
CarbonCure has the strongest proven customer demand, while neustark has the largest disclosed order book for mineralization removals.
CarbonCure’s demand has already passed the experiment stage. Producers have used its systems across millions of separate deliveries, often over several years. The company does not disclose revenue or customer retention, but continued production across hundreds of plants gives us a much stronger test than a list of pilot agreements.
Neustark has sold nearly 120,000 tonnes of durable carbon removal to buyers including Microsoft, UBS and NextGen. Microsoft alone agreed to buy 27,600 tonnes over six years.
Delivery is the catch. Neustark’s latest disclosed removals represented only a small part of the volume sold. Gold Standard verified another 1,613 tonnes generated at sites in Switzerland and Germany, but most of the order book still has to become operating projects and issued credits.
Fortera has attracted Microsoft as both an investor and a potential buyer. The agreement gives Microsoft procurement rights for ReAct cement and its associated environmental attributes. That creates a credible route to demand, although procurement rights do not guarantee that the planned factory will sell all its output.
Carbon Upcycling’s work with Ash Grove and its parent company CRH may prove even more useful operationally. CRH already owns cement plants, distribution networks and customer relationships. A successful first facility could travel through that existing network.
Paebbl has completed construction projects with Holcim and GOLDBECK. Carbonaide now has certified carbon-removal activity running at two Finnish facilities. CarbiCrete products have also reached real buildings through manufacturing partners.
Those companies have credible buyers around them. CarbonCure stays ahead because its customers are already producing at a much larger and more regular pace.
This chart, included in our CCUS market deck, illustrates yearly VC funding for CCUS startups
Which carbon mineralization startup is moving fastest now?
Neustark is adding sites fastest, while Fortera is attempting the boldest jump in plant capacity.
Neustark had nineteen operating sites when it announced its large financing round in 2024. The network has since grown to 47, an increase of roughly 150%. Swiss recycler Alluvia has also ordered a second installation, giving neustark an early example of a customer expanding after its first deployment.
Fortera plans to move from its current 15,000-ton facility to a plant capable of producing 400,000 tons annually. That would increase its capacity almost 27 times. Microsoft is supporting the project and has secured purchasing rights, making the expansion more credible than an unsupported factory announcement.
CarbonCure has grown from 7.5 million truckloads in late 2024 to more than 11 million. That is close to 50% growth from an already large base, which is harder than doubling a handful of pilot sites.
The freshest product progress is coming from Paebbl and MCi Carbon. Paebbl supplied material for a 420-square-metre industrial floor in Germany and a 410-square-metre microcement project on La Réunion. MCi Carbon opened Myrtle and can now run continuous customer campaigns using emissions and residues from steel, cement and other industries.
Carbon Upcycling has added $10 million in equipment financing while building its Ash Grove facility. The company says engineering work has also started on a second and third project.
Carbonaide has moved beyond its first installation, with industrial production and certified removal activities now running at two facilities. Its next challenge is proving that the systems remain attractive without depending heavily on carbon-credit revenue.
If you want more recent data on this point, please see our latest CCUS market report.
Which carbon mineralization product is ready for normal customers?
CarbonCure has the most mature customer-ready product in carbon mineralization today.
Concrete producers can add CarbonCure equipment to an existing plant without replacing the main production line or asking contractors to learn a new building method. The system controls the amount of CO₂ injected into each mix and records the production data needed for quality checks and carbon accounting.
CarbonCure says producers have already applied the process across more than 20,000 mix designs. Recent work with researchers at MIT has also provided a clearer explanation of how mineralized CO₂ changes the concrete’s microstructure and supports cement efficiency.
Carbfix has reached similar technical maturity underground. Its Icelandic operations have shown that most injected CO₂ can turn into solid minerals within two years. Moving into a new location takes far more preparation because every project needs suitable geology, wells, water, permits and monitoring.
Fortera now manufactures cement at a commercial facility. CarbonBuilt produces masonry in its own factory. Neustark operates dozens of storage sites within working recycling businesses. These companies have crossed the line from technical validation into commercial operation.
Paebbl, MCi Carbon and Carbon Upcycling sit one step earlier. Their equipment and materials are working at meaningful size, but long-term performance across several replicated commercial plants remains unproved.
This chart, included in our CCUS market deck, shows why CarbonCure stands out in CCUS
Which carbon mineralization material performs best in practice?
CarbonBuilt currently offers the strongest mix of deep carbon reduction, accepted performance and commercial availability.
CarbonBuilt’s Reversa binder can replace up to half the cement used in concrete masonry. Together with operational changes at its Connecticut factory, the company says the process can reduce the product footprint by as much as 70%.
Its normal-weight masonry also carries the lowest carbon footprint in the United States within the EC3 construction-material database. Customers can buy the blocks commercially, which gives the result more weight than a laboratory comparison.
CarbiCrete reaches an even lower reported footprint in some products. Its environmental data show around 11.7 kilograms of CO₂ equivalent per cubic metre for one concrete masonry product, a reduction of more than 90% from a conventional reference. The process removes Portland cement entirely and uses steel slag as the binder.
Fortera reports that pure ReAct cement can carry around 70% lower emissions than ordinary Portland cement. Early customers are more likely to use ReAct in blends, where the reduction falls as the conventional cement share rises.
Paebbl’s German industrial floor gives us a useful field comparison. Replacing 15% of the cement cut embodied carbon by 13%, stored 886 kilograms of CO₂ and still met the required C30/37 strength standard. The contractor poured the full 420-square-metre floor in one day without changing the construction schedule.
Blue Planet reports the largest CO₂ storage per tonne of construction material, at roughly 440 kilograms for each tonne of synthetic limestone aggregate. Its advantage remains mostly potential until commercial production reaches steady volume.
If you want more recent data on this point, please see our latest CCUS market report.
Which carbon mineralization startup gives customers the clearest financial reason to buy?
CarbonCure still has the simplest customer economics because producers can save cement without rebuilding the plant.
Cement usually carries the largest cost and carbon footprint inside a concrete mix. CarbonCure uses mineralized CO₂ to improve cement efficiency, allowing a producer to reach the required strength with less cement in suitable mixes.
The producer can lower material spending and offer concrete with a smaller footprint. Carbon credits or environmental attributes may add revenue, but the original business case does not need to depend entirely on them.
CarbonBuilt makes a stronger claim on the final product. The company says its low-carbon masonry can be sold without a green premium because Reversa replaces expensive cement with lower-cost industrial materials. Owning the factory should reveal whether those savings remain after normal labor, maintenance and sales expenses.
Fortera has designed its process to fit beside existing lime or cement infrastructure. Access to existing kilns, raw materials and distribution should make expansion cheaper than building a completely independent cement business. We still lack public production costs from the Redding facility.
Neustark earns income from carbon-removal buyers while sharing value with CO₂ suppliers and recycling companies. That gives every participant a reason to join, although transport costs and credit prices can make or break an individual site.
Carbonaide combines cement savings, shorter curing times and carbon-credit revenue. Its website currently claims lower cement use and faster curing at operating factories, but the company has not disclosed enough cost data for us to compare payback periods.
Carbfix and 44.01 offer extremely durable storage. Their economics depend heavily on local geology, drilling, water, capture equipment and the distance between the emitter and the injection site.
This chart, included in our CCUS market deck, illustrates yearly funding for CCUS startups
Which carbon mineralization startup can scale beyond one flagship plant?
CarbonCure has already scaled across many plants, and neustark has the next most repeatable deployment model.
CarbonCure sells equipment and software to producers that already own batching plants, trucks, sales teams and local distribution. The company can expand without financing or operating every concrete factory itself.
Neustark follows a similar pattern with demolition-waste recyclers. Its modular equipment fits into an existing industrial site, while neustark coordinates the CO₂ supply, monitoring and removal credits. The model has already travelled across several European countries.
Fortera can create far more output from each successful project. Its proposed facility would reach 400,000 tons annually. Every new plant still requires heavy construction, permits, capital and qualification by cement customers.
Carbon Upcycling has a strong route to replication through CRH. If the Mississauga project performs well, CRH can offer more cement plants, industrial feedstocks and customers. The company is already engineering further projects, but the first commercial facility needs to start producing before that pathway is proved.
CarbonBuilt has taken a more capital-heavy route by acquiring a masonry factory. Its 80,000-ton-plus capacity is impressive relative to the money raised, although buying and converting many factories would require a much larger balance sheet.
CarbiCrete and Carbonaide license systems or install equipment inside partner factories. Both could expand without owning the manufacturing assets, provided partners see reliable savings and enough customer demand.
Carbfix suffered the clearest scaling setback in the field. Its original Coda Terminal location in Hafnarfjörður was abandoned after the company and local authorities failed to agree on the project. Carbfix continues working on point-source and direct-air-capture projects, but its route to a multi-million-tonne import terminal has become less certain.
Which carbon mineralization startup is hardest to copy?
CarbonCure has the strongest commercial moat, while Carbfix owns the deepest technical know-how.
CarbonCure’s real protection comes from hundreds of plant integrations, years of production data, customer relationships and experience across thousands of concrete mixes. A competitor can design another CO₂ injection system. Rebuilding that operating history would take much longer.
Carbfix has accumulated knowledge across geology, injection chemistry, well design and underground monitoring. Each new project also requires local geological data that cannot simply be copied from Iceland.
Neustark is building a network around recycling companies, biogas plants, CO₂ transporters, credit standards and corporate buyers. The equipment itself may be easier to reproduce than a cement refinery, but setting up the full chain in each region takes time.
Fortera’s moat should grow through manufacturing experience and construction approvals. Cement customers care deeply about standards, consistency and long-term performance. Each qualified product and completed building makes the next sale easier.
CarbonBuilt, CarbiCrete and Carbon Upcycling depend partly on access to suitable industrial residues. Strong feedstock partnerships can protect them locally. The same dependence can restrict growth when the chemistry, quantity or location of the waste changes.
Paebbl and MCi Carbon may eventually build broader process advantages because they can work with several mineral feedstocks and produce different materials. Both need more commercial projects before that flexibility becomes a proven moat.
If you want more recent data on this point, please see our latest CCUS market report.
This chart, included in our CCUS market deck, compares the main business model options for carbon capture project developers
Does one startup lead every part of carbon mineralization?
No. CarbonCure leads the overall market, but every major carbon mineralization segment has its own front-runner.
A ready-mix producer looking for a proven retrofit would begin with CarbonCure. A cement company exploring a new binder would pay more attention to Fortera, Carbon Upcycling or Paebbl. A buyer searching for certified removal tonnes would look at neustark.
CarbonBuilt leads commercial low-carbon masonry. CarbiCrete has the strongest cement-free precast product. MCi Carbon operates the most flexible facility for testing different industrial emissions and mineral feedstocks.
Carbfix remains the technical leader underground, despite the Coda setback. 44.01 is its closest startup challenger and may have an easier route in regions with accessible peridotite formations.
Blue Planet still has the most ambitious aggregate product. If synthetic limestone reaches large commercial volumes, it could attack a far bigger part of the concrete mix than technologies focused only on cement.
| Carbon mineralization segment | Current leader | Why |
|---|---|---|
| Overall commercial deployment | CarbonCure | Largest amount of repeated production across many plants |
| Mineralized cement | Fortera | Operating commercial facility and credible expansion plan |
| Distributed carbon removal | neustark | Largest network selling certified mineralization removals |
| Underground rock mineralization | Carbfix | Longest operating history and deepest technical experience |
| Low-carbon masonry | CarbonBuilt | Owned commercial factory and very low product footprint |
| Cement-free precast concrete | CarbiCrete | Cement-free products used through manufacturing partners |
| Mineralized cement substitutes | Carbon Upcycling | First commercial facility under construction with CRH |
| Emerging carbon-storing binder | Paebbl | Strong recent performance in full construction projects |
| Multi-feedstock mineralization | MCi Carbon | Operating refinery built for continuous customer campaigns |
| Synthetic mineralized aggregate | Blue Planet | Highest reported storage per tonne of aggregate |
Can we trust carbon mineralization startup numbers?
We can trust the overall ranking, but private startup numbers become much weaker once we move from operating plants and issued credits to future capacity and headline percentages.
Completed production gives us the best evidence. CarbonCure’s concrete deliveries, neustark’s issued credits, Fortera’s operating facility, MCi Carbon’s open refinery and CarbonBuilt’s commercial factory can all be tied to physical activity.
Nameplate capacity tells us what equipment could produce under intended operating conditions. It does not reveal utilization, downtime, customer orders or production costs.
Planned capacity deserves even less weight. Fortera’s expansion and Carbon Upcycling’s commercial facility could change the ranking, but neither belongs in current output totals.
Carbon-removal sales measure demand. Issued credits measure delivery. Neustark’s order book is commercially valuable, while its verified removals give us a better view of the company’s completed impact.
Product-level carbon reductions also depend on the comparison chosen. The result changes with the cement blend, electricity source, transport distance, feedstock and lifecycle boundary. We give more weight to environmental product declarations, independent material databases and completed construction work than to the largest percentage used in marketing.
Funding figures carry their own uncertainty. Public databases frequently disagree about grants, debt and project financing. They can tell us which startups have access to substantial capital, but they cannot support precise comparisons of funding efficiency.
Revenue, margins, utilization and customer retention remain mostly private. Our confidence is high on physical deployment and product maturity, reasonable on customer demand, and much lower on profitability.
This chart, featured in our CCUS market deck, illustrates revenue distribution by customer segment in the CCUS market
Which carbon mineralization startups are actually ahead?
CarbonCure is the startup ahead overall today, with Fortera and neustark forming the only credible chasing group.
CarbonCure has already made mineralization part of normal industrial production. Its lead comes from a broad installed network, repeated customer use, international reach and years of operating data. No rival currently matches that combination.
Fortera ranks second because it has an operating cement facility and the clearest plan for a major step-up in output. Microsoft’s investment and procurement rights strengthen the commercial case. Fortera could challenge CarbonCure if the larger plant reaches reliable production and wins repeat customers.
Neustark takes third. Its distributed network, verified credits and corporate order book make it the strongest mineralization company built specifically around carbon removal. The gap between sales and delivered tonnes remains its biggest weakness.
Carbfix ranks fourth. Its underground technology is more mature than any rival’s, but losing the original Coda location removed its most visible route toward multi-million-tonne scale.
CarbonBuilt moves into fifth through commercial factory ownership, strong product performance and unusually efficient use of its disclosed funding. Carbon Upcycling follows because its CRH-backed facility offers a believable route into additional cement plants.
CarbiCrete, Paebbl and Carbonaide form the next group. CarbiCrete has the strongest cement-free product, Paebbl has completed the most convincing recent construction applications, and Carbonaide is beginning to replicate its system across factories.
MCi Carbon now has a serious industrial asset in Myrtle. The refinery still needs to convert customer campaigns into full commercial plants. 44.01, Blue Planet and Seratech remain promising technologies with limited operating volume.
CarbonCure’s lead could shrink if its producers stop expanding use or construction buyers begin demanding much deeper reductions from every tonne of concrete. The most likely challengers are Fortera through large cement plants and neustark through a faster conversion of contracted removals into delivered tonnes.
| Rank | Startup | Why it holds this position |
|---|---|---|
| 1 | CarbonCure | Far ahead on repeated customer production, installed systems and completed impact |
| 2 | Fortera | Best combination of operating cement production and credible large-scale expansion |
| 3 | neustark | Strongest distributed mineralization-removal network and largest disclosed order book |
| 4 | Carbfix | Deepest underground mineralization experience, weakened by the Coda setback |
| 5 | CarbonBuilt | Commercial factory, strong material performance and efficient capital use |
| 6 | Carbon Upcycling | CRH-backed commercial project creates a credible replication path |
| 7 | CarbiCrete | Cement-free products have reached external factories and real buildings |
| 8 | Paebbl | Recent commercial applications give the product strong momentum |
| 9 | Carbonaide | Industrial production and certified removals are spreading to more factories |
| 10 | MCi Carbon | Myrtle provides serious industrial capability, with commercial replication still ahead |
| 11 | 44.01 | Strong technical concept and industrial partners, with volumes still at pilot level |
| 12 | Blue Planet | Large product potential, but little proven commercial output so far |
| 13 | Seratech | Promising cement substitute still operating at pilot and fundraising stage |
If you want more recent data on this point, please see our latest CCUS market report.
OUR METHODOLOGY
This analysis compares thirteen carbon mineralization startups across three distinct markets: concrete mixing and curing, mineralized construction materials, and underground rock storage. Because those businesses report different kinds of progress, we did not use one common metric to determine the leader.
For each question, we reviewed the freshest relevant evidence on completed deployment, repeated customer use, operating capacity, verified climate impact, product performance, contracted demand, commercial economics, scalability and recent execution. We treated completed production as stronger evidence than nameplate capacity, issued credits as stronger evidence than removal sales, and operating projects as stronger evidence than announced plants.
The final ranking aggregates the pattern across those questions rather than allowing one large funding round, capacity target or carbon-reduction percentage to decide the result. The greatest weight goes to recent real-world repetition and commercial validation. Product claims receive more weight when supported by environmental product declarations, independent databases, verified methodologies or completed construction work.
Funding totals are approximate because public sources do not consistently separate equity, grants, loans, awards and project financing. We use those figures mainly to judge access to capital, not profitability or capital efficiency. Revenue, margins, utilization, retention and payback periods remain mostly private, so our confidence is higher on deployment and product maturity than on economics.
Key operating and technical sources include CarbonCure on 11 million truckloads and cumulative CO₂ savings, CarbonCure and MIT on mineralization and more than 20,000 mix designs, neustark on its operating network, neustark on lifecycle efficiency and net removals, neustark on removal sales and site growth, and neustark on its Microsoft offtake agreement.
Plant and product evidence comes from Fortera on its commercial plant and expansion plan, Fortera and Microsoft on investment and procurement rights, Fortera on product performance and commercial projects, CarbonBuilt on commercial production and factory capacity, CarbiCrete’s environmental product data, Paebbl’s industrial floor project, and MCi Carbon on the Myrtle refinery.
Additional project and methodology sources include Carbon Upcycling on Carbon 1 Mississauga, Carbon Upcycling and Ash Grove on construction and financing, Carbonaide on certified activity at two Finnish facilities, Carbonaide’s carbon-accounting methodology, 44.01 on monitoring and verification for in-situ mineralization, and Blue Planet on reported CO₂ storage per tonne of aggregate.
This chart, included in our CCUS market deck, shows how carbon removal marketplace technology has evolved over time
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