What are the top CCUS startups by revenue today?

The ranking of top startups in the CCUS market by revenue

Below is a table ranking all the companies in this market by their current revenue scale. You can find our methodology at the end of this page.

If you want a deeper understanding of the market and its current dynamics, get our report covering the Carbon Capture Market.

Which CCUS startups make the most revenue today?

O.C.O Technology has the strongest verified private-company revenue figure we found in CCUS today, while Svante could be larger if its $87.5 million third-party revenue estimate is accurate.

The ranking gets messy very quickly because CCUS companies disclose completely different things. O.C.O Technology has recent filed accounts. Carbon Clean has independently verified sales data. Neustark has an older company-disclosed revenue figure. CarbonCure talks mostly about concrete volumes and carbon credits. DAC companies such as Heirloom and 280 Earth often disclose long-term offtake contracts instead of annual sales.

We separate revenue from estimates, contract value and operating scale. Putting all four into one column would make a clean-looking ranking, but it would also make the ranking wrong.

The clearest current picture is that only a small group of independent CCUS companies has demonstrated annual revenue in the tens of millions. The market contains many more companies with large contracts or ambitious capacity than companies with clearly disclosed eight-figure sales.

Company	Best current commercial figure	What the figure is	Our read
Svante	$87.5M	Estimated 2025 revenue	Possible revenue leader, but low-confidence estimate
O.C.O Technology	£36.9M	FY2025 turnover	Strongest verified private-company revenue figure
Carbon Clean	£18.1M	2024 sales	Strong independent revenue evidence
Neustark	$10M	2023 revenue	Older figure; business has expanded since
CarbonCure	Revenue undisclosed	11M+ concrete truckloads; 777,000+ t CO₂ savings	Large commercial footprint, impossible to rank precisely by revenue
Capsol Technologies	NOK 70.7M	2025 revenue	Transparent comparator, but publicly listed
SLB Capturi	Much larger financial scale	Corporate-backed capture business	Excluded from the strict startup ranking

Is Svante really the biggest CCUS startup by revenue?

Svante currently looks like the possible revenue leader among independent CCUS startups, but we do not have strong enough evidence to call the $87.5 million figure proven.

The number comes from a third-party company-data estimate for 2025. Svante itself does not publish an audited annual revenue figure that lets us verify it directly.

The estimate is plausible in the context of the business. Svante has moved well beyond laboratory carbon capture: it manufactures solid-sorbent filters and rotary contactor systems for industrial projects, has raised large amounts of capital and has spent years building commercial partnerships.

Still, an estimated $87.5 million cannot carry the same weight as filed turnover. We therefore place Svante at the top of the indicative ranking while giving O.C.O Technology the stronger verified position.

Is O.C.O Technology quietly one of the biggest private CCUS companies?

O.C.O Technology is already a serious revenue-generating CCUS business, with £36.9 million of turnover in its latest filed financial year.

The UK company converts carbon dioxide and waste materials into manufactured aggregate through accelerated carbonation. Its filed accounts show turnover rising from roughly £32.5 million to £36.9 million, while operating profit climbed to about £7.1 million.

Those numbers put O.C.O ahead of most venture-backed carbon-removal companies for which we can find actual annual sales.

O.C.O receives much less attention than direct-air-capture startups because the business looks more like industrial materials than futuristic climate tech. Commercially, that works in its favor: O.C.O sells a physical product into an existing construction market and has already reached a scale that many newer CCUS startups are still trying to build.

How much revenue does Carbon Clean make now?

Carbon Clean generated £18.1 million of sales in 2024, making it one of the clearest eight-figure independent carbon-capture companies we found.

The Sunday Times 100 Tech ranking reported the £18.1 million figure and an 86.35% compound annual sales growth rate over three years. That is much stronger evidence than the smaller revenue estimates still circulating across company-data websites.

Carbon Clean also has a genuinely international commercial footprint. The company works across heavy industries including cement, refining and energy, while its current push is toward modular CycloneCC capture systems that can be manufactured and deployed more repeatedly than highly customized plants.

That gives Carbon Clean something unusual in this market: meaningful historical revenue and a believable path toward larger repeat sales.

Is Neustark making more than $10 million a year now?

Neustark is almost certainly a larger commercial business than when it disclosed $10 million of revenue, although no newer company-wide revenue figure lets us quantify how much larger.

The Swiss carbon-removal company said revenue quadrupled to $10 million in 2023. At the time, Neustark employed around 60 people and was preparing a much broader European rollout.

The business now reports 47 operating capture-and-storage sites across eight European countries. Neustark installs its technology around demolition concrete, slags and other mineral waste so that captured CO₂ becomes permanently mineralized.

We would rather keep $10 million as the last known revenue floor than extrapolate a fictional number from the site count. The operating footprint has grown substantially since that disclosure, so the old figure probably understates Neustark's current commercial scale.

How big is CarbonCure as a business today?

CarbonCure is clearly one of the most commercially deployed private CCUS companies today, even though CarbonCure still does not publish enough revenue data for a clean financial ranking.

The company says concrete producers using its technology have passed 11 million truckloads of CarbonCure concrete and more than 777,000 metric tons of cumulative CO₂ savings.

That installed base has a financial side as well. CarbonCure says sales of verified carbon credits have generated millions of dollars in credit revenue, which it shares with participating concrete producers.

What we cannot see is consolidated company turnover across technology fees, services and carbon-credit activity. CarbonCure could therefore sit above several companies in our revenue table, but there is no defensible number that proves where.

Are Climeworks and Heirloom already among the highest-revenue CCUS startups?

Climeworks and Heirloom are among the biggest names in carbon removal, but public evidence does not show that either company is currently one of the highest-revenue CCUS startups.

Climeworks has sold carbon removal to major corporations and its Solutions business has recently expanded well beyond Climeworks' own direct-air-capture plants. In the first half of 2026, Climeworks Solutions announced 14 new partnerships covering roughly 450,000 tonnes of removal across DAC, biochar, BECCS, enhanced rock weathering and nature-based pathways.

Heirloom has also signed very large commitments. Microsoft agreed to buy up to 315,000 tonnes of removal over more than ten years, while Frontier buyers separately signed a $26.6 million offtake for 26,900 tonnes.

These contracts say a lot about future demand. They tell us much less about current annual sales because delivery and revenue recognition stretch over several years.

Why do CCUS contracts look much bigger than company revenue?

CCUS contract headlines often cover many years of future delivery, so the face value can be several times larger than one year of company revenue.

280 Earth gives us a clean example. Frontier buyers committed $40 million for 61,571 tonnes of carbon removal between 2024 and 2030. Dividing the contract by six years would already produce a very different number, and even that simple calculation would still be wrong because deliveries do not necessarily occur evenly.

CREW Carbon has a similar structure: Frontier buyers committed about $32.2 million for 71,878 tonnes delivered over several years. Heirloom's $26.6 million Frontier agreement runs through 2030.

These agreements are real commercial assets. They can support financing, prove buyer demand and eventually create revenue. We simply keep their full contract value separate from annual recognized sales.

Company	Contract value	Contracted amount	Delivery period	What we use it for
280 Earth	$40M	61,571 t	2024–2030	Future contracted scale
CREW Carbon	$32.2M	71,878 t	Multi-year through 2030	Future contracted scale plus early deliveries
Phlair	$30.6M	47,000 t	2027–2030	Commercial backlog
Heirloom	$26.6M	26,900 t	Through 2030	Commercial backlog
CarbonRun	$25.4M	55,442 t	2025–2029	Commercial backlog
Arbor	$41M	116,000 t	2028–2030	Future BECCS revenue opportunity
Terradot	Value undisclosed	1M t permanent removal plus 1M tCO₂e methane impact	Through 2040 / 2030	Massive contracted volume, no usable revenue figure

Which carbon-removal startups have the biggest commercial contracts right now?

Some of the largest startup contracts now exceed $30 million, while the newest megaton-scale deals increasingly leave the dollar value undisclosed.

Arbor has a $41 million Frontier agreement covering 116,000 tonnes from 2028 to 2030. 280 Earth's deal is worth $40 million. CREW Carbon's contract is approximately $32.2 million, and Phlair has now joined this group with a $30.6 million agreement.

Terradot is larger in physical volume. Google recently announced an agreement built around one million tonnes of permanent carbon removal by 2040, alongside one million tonnes of shorter-term methane impact by 2030 at rice farms in Brazil. Google called it its largest carbon-removal purchase to date, but did not publish the price.

The market is reaching much larger contracted volumes before most suppliers have reached comparable annual revenue.

Has CREW Carbon started turning its $32 million contract into real deliveries?

CREW Carbon has already moved beyond a purely forward contract because the company has started delivering independently verified carbon-removal credits.

CREW integrates its process into wastewater treatment plants, where it increases alkalinity and converts atmospheric carbon into dissolved bicarbonate. The $32.2 million Frontier agreement covers 71,878 tonnes.

The useful detail is that delivery has begun. That puts CREW ahead of startups whose large contracts still depend entirely on facilities that have not started producing contracted tonnes.

The volumes remain small compared with the full agreement, so CREW is still early commercially. But today there is a measurable bridge between its headline contract and actual delivered product.

Are any independent CCUS startups making more than $100 million a year?

We found no independent CCUS startup with more than $100 million of annual revenue that we could verify confidently.

Svante comes closest with its estimated $87.5 million figure. O.C.O Technology remains well below $100 million in dollar terms, while Carbon Clean is currently around the low tens of millions of pounds based on the latest strong sales evidence.

That gap is easy to miss because CCUS regularly produces billion-dollar project announcements, megaton capacity plans and very large fundraising rounds.

Company revenue is still much smaller. For most independent technology developers, commercial sales remain in the single-digit or tens-of-millions range rather than hundreds of millions.

Why isn't SLB Capturi ranked as the number-one CCUS startup?

SLB Capturi is too closely tied to a global industrial group to be treated as a normal startup, even though its carbon-capture business is much larger than most independent companies in this ranking.

SLB created the current business with Aker Carbon Capture in 2024. At closing, SLB owned 80% of the venture and Aker Carbon Capture held 20%.

The operation started with seven carbon-capture installations under development representing up to one million tonnes of annual capture capacity. Its projects include major industrial plants in Norway, Denmark and elsewhere in Europe.

Putting SLB Capturi beside companies such as Svante or Neustark would mix two very different realities: a venture-backed independent company building from scratch and a carbon-capture platform backed by one of the world's largest oilfield-technology groups. We use SLB Capturi as a scale benchmark instead.

Should Northern Lights, 1PointFive and BKV dCarbon count as CCUS startups?

Northern Lights, 1PointFive and BKV dCarbon belong in the CCUS market, but treating them as startups would make the revenue ranking much less useful.

Northern Lights is owned by Equinor, Shell and TotalEnergies. Its first 1.5-million-tonne annual storage phase is now operating, and construction is moving ahead on an expansion to more than five million tonnes per year by 2028.

1PointFive sits inside Occidental. BKV dCarbon is part of publicly listed BKV.

All three can become major commercial CCUS businesses, especially in transport and storage. They belong in comparisons of project capacity, infrastructure and sector economics. Our startup ranking keeps them outside the main table because their financing, corporate support and risk profile are fundamentally different from independent startups.

Which type of CCUS startup can make real revenue fastest?

CCUS startups that sell equipment, engineering or physical products generally have a shorter path to meaningful revenue than companies waiting to deliver carbon removal over long contracts.

O.C.O sells aggregate. Carbon Clean sells capture technology and engineering. Svante manufactures capture systems. CarbonCure installs technology into an existing concrete industry.

DAC developers face a harder commercial sequence. They often need to fund, permit and build significant infrastructure before most contracted tonnes can be delivered.

That difference helps explain why some relatively unglamorous industrial businesses appear near the top of today's revenue ranking while heavily funded carbon-removal startups remain hard to rank financially.

Business model	How money starts coming in	Examples	Revenue visibility today
Carbonated construction materials	Product sales	O.C.O Technology	High
Capture equipment	Equipment, engineering, licensing	Svante	Medium
Modular point-source capture	Projects, engineering, licensing	Carbon Clean	High
Concrete mineralization	Technology fees and carbon credits	CarbonCure	Medium-low
Distributed mineral storage	Removal credits and site deployments	Neustark	Medium
Direct air capture	Multi-year removal purchases	Heirloom, 280 Earth, Phlair	Low
Wastewater / novel CDR	Multi-year offtake plus delivered credits	CREW Carbon	Improving

Are mineralization companies commercially ahead of direct-air-capture startups?

Mineralization companies currently show some of the strongest real-world commercialization in CCUS, particularly when we compare operating sites and product sales with DAC deliveries.

O.C.O already generates tens of millions of pounds by making aggregate. CarbonCure has reached more than 11 million concrete truckloads. Neustark has built a distributed network of dozens of operating sites.

DAC companies can sign much larger forward commitments, but current physical output remains smaller for many of them. Heirloom's first commercial plant in California, for example, was designed for up to 1,000 tonnes per year.

The gap may shrink as larger DAC facilities arrive. For now, mineralization has an important advantage: companies can plug carbon into construction and waste markets that already exist.

Does a big CO₂ capacity number mean a CCUS startup has big revenue?

Installed or planned CO₂ capacity tells us almost nothing about revenue unless we know whether the plant is running and who is paying for the output.

A 60,000-tonne proposed plant can have less current revenue than a much smaller company selling engineering services today. A large carbon-removal contract can also sit years ahead of the capacity required to fulfill it.

Phlair makes this easy to see. Frontier has committed $30.6 million to buy 47,000 tonnes from its first commercial facility between 2027 and 2030. That is substantial contracted demand today, while most of the associated physical delivery still lies ahead.

Carbon Upcycling sits at another point on the curve. The company currently reports two projects, 53,000 tonnes of installed capacity and 34,000 tonnes of CO₂ reduced. Those figures prove physical commercial progress without telling us annual company revenue.

Capacity is useful as a cross-check, especially where financial disclosure is poor, but we never convert tonnes into imaginary sales.

Are the highest-revenue CCUS companies profitable yet?

O.C.O Technology shows that a CCUS company can already produce meaningful profit, while Capsol Technologies shows how easily revenue can coexist with heavy losses.

O.C.O's latest accounts show roughly £36.9 million of turnover and about £7.1 million of operating profit.

Capsol Technologies, which we use as a transparent public-company comparator, reported NOK 70.7 million of 2025 revenue. The business was still loss-making as it funded engineering, demonstrations and technology commercialization.

Many venture-backed CCUS companies disclose even less. Without current financial statements from Svante, Carbon Clean, CarbonCure or Neustark, we cannot make sensible margin comparisons.

The profitable companies today tend to have mature industrial revenue streams rather than depending almost entirely on the economics of new carbon-removal plants.

Which CCUS companies have the strongest revenue evidence?

O.C.O Technology has the cleanest revenue evidence in our private-company ranking because its latest figure comes directly from filed financial accounts.

Carbon Clean also gives us unusually strong evidence for a private CCUS company. The Sunday Times reported £18.1 million of 2024 sales, and the figure sits within a broader track record of rapid revenue growth.

Neustark's $10 million disclosure came directly from the company but is older. Svante's number is fresher and much larger, yet the source quality is weaker because it is an estimate. CarbonCure has excellent operating data and poor company-level revenue visibility.

We leave those differences visible. A ranking becomes less trustworthy when an estimate and an audited turnover figure are formatted as though they were equally certain.

Company	Best evidence	Quality	Main problem
O.C.O Technology	Filed FY2025 turnover	Very high	More established than a classic startup
Carbon Clean	Published 2024 sales	High	Private company, limited detailed accounts
Neustark	Company-disclosed 2023 revenue	Medium-high	Old
Svante	Estimated 2025 revenue	Low-medium	Not company-disclosed
CarbonCure	Deployment and credit-revenue disclosures	Medium for commercial scale	No consolidated revenue figure
Climeworks	Large contract and partnership disclosures	High for bookings	No comparable annual company revenue
Heirloom	Large offtake agreements	High for bookings	Future deliveries dominate the figures

Which CCUS startups have already crossed $10 million in annual revenue?

Svante, O.C.O Technology and Carbon Clean sit above the $10 million level on the best figures we found, while Neustark had already reached exactly $10 million by 2023.

CarbonCure may belong in the same group, but public disclosures do not establish that cleanly. Other startups with contracts above $20 million cannot automatically be included because those contracts cover several future years.

The small number is revealing. Our broader CCUS research contains dozens of companies with credible projects, operating plants, carbon-removal contracts or industrial pilots.

Only a handful have given the market enough financial evidence to show eight-figure annual sales.

Which CCUS startups could move up the revenue ranking next?

Neustark, Carbon Clean, CREW Carbon, Climeworks' broader Solutions business and several companies with new large offtakes have the clearest routes toward materially higher commercial scale.

Neustark already has an operating network that is far larger than when it last disclosed revenue. Carbon Clean has existing eight-figure sales and is trying to turn modular capture into a more repeatable product business.

CREW is beginning to deliver against a $32.2 million agreement rather than simply holding future bookings. Phlair now has a $30.6 million Frontier contract for its first commercial project.

Climeworks is also worth watching for a different reason. Its Solutions division recently signed roughly 450,000 tonnes across 14 partnerships spanning several carbon-removal technologies. That broadens Climeworks from a pure owner-operator of DAC facilities toward a supplier and portfolio manager of carbon removal.

Terradot has the most striking recent jump in contracted physical scale. Google's newest agreement covers one million tonnes of permanent carbon removal by 2040 alongside one million tonnes of nearer-term methane impact.

These companies still have to turn booked tonnes into delivered tonnes and recognized sales, but the commercial pipeline is much larger than it was a few years ago.

So who are the top CCUS startups by revenue today?

O.C.O Technology is the clearest verified private CCUS revenue leader in our research, while Svante probably ranks higher if its estimated $87.5 million of 2025 revenue is close to reality.

Carbon Clean comes next among companies with strong revenue evidence, with £18.1 million of 2024 sales. Neustark had already reached $10 million in 2023 and has since built a much larger operating footprint.

CarbonCure deserves to sit close to this group on commercial maturity, although the missing company-wide revenue figure prevents us from giving it a precise place.

Below that tier, revenue rankings become much less meaningful. Companies such as 280 Earth, CREW Carbon, Heirloom, Phlair and Terradot have signed large commercial agreements, but much of the money depends on carbon removal that will be delivered over several future years.

The broader picture is sharper than the industry's project pipeline suggests. CCUS has plenty of startups with major customers and serious technology, yet very few independent companies have already built clearly documented annual revenue above the low tens of millions. Today, the companies furthest along financially tend to sell industrial equipment, engineering or mineralized materials into existing markets. Direct-air-capture and newer carbon-removal businesses have accumulated large backlogs, but recognized revenue still has a lot of catching up to do.