Company lists · Data refreshed September 2026
Top 25 Permanent carbon removal companies based in the United States
RevenueBase identified 286 permanent carbon removal companies headquartered in the United States as of September 2026 and tracks 5,163 professional contacts across them, including 2,798 with verified work emails. Houston is the largest hub.
This list covers permanent carbon removal companies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 20, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest permanent carbon removal companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,095 contacts → | ||||
Partial evidence “California Resources Corporation (CRC) is an independent energy and carbon management company committed to energy transition.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 338 contacts → | ||||
Partial evidence “Our way of life is built on carbon, from our fuel sources to the materials in our consumer products, but we need a more sustainable way to source it to protect the future of our…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 240 contacts → | ||||
Partial evidence “Wren Climate, PBC helps you live carbon neutral by accounting for and offsetting your carbon emissions through transparent climate projects.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 200 contacts → | ||||
Partial evidence “Anew Climate is a global leader of diverse climate solutions, bringing innovative products and services to the public and private sectors to help reduce or offset their carbon…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 172 contacts → | ||||
Partial evidence “Carbon Direct is a trusted energy and climate solutions company that combines world-class scientific expertise, technical rigor, and market insights to help clients achieve their…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 111 contacts → | ||||
Strong evidence “Mitigating the worst impacts of climate change by developing the world’s most cost-effective DAC technology to permanently remove CO2 from the atmosphere.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 93 contacts → | ||||
Indirect evidence “Charm Industrial is working to return the atmosphere to 280 ppm CO₂.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 79 contacts → | ||||
Indirect evidence “Infinium is reimagining how the world powers, moves, and computes.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 73 contacts → | ||||
Indirect evidence “A certified B Corp, Tradewater directly combats climate change by identifying, collecting, and eliminating the release of non-CO₂ superpollutants, including refrigerants in old…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 70 contacts → | ||||
Strong evidence “Mati is a carbon removal company on a mission to remove 100 million tonnes of carbon dioxide from the atmosphere through Enhanced Rock Weathering while creating agronomic and…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 67 contacts → | ||||
Partial evidence “Defining the LEADING EDGE of CARBON MANAGEMENT.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 66 contacts → | ||||
Indirect evidence “The ocean is an immensely powerful force of nature, and our greatest ally to reverse the tides on climate change.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 62 contacts → | ||||
Partial evidence “Founded with the belief that environmental impact and economic durability must advance together, CarbonFree focuses on solutions for hard to abate industrial sectors where…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 58 contacts → | ||||
Partial evidence “Headquartered in Boulder, Colorado, ION Clean Energy has developed a transformative carbon capture technology that is particularly effective in capturing CO2 emissions from…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 57 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 55 contacts → | ||||
Strong evidence “Boomitra works with farmers and ranchers worldwide to increase soil carbon through improved agricultural practices and generate internationally certified carbon removal credits.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 53 contacts → | ||||
Indirect evidence “8 Rivers is a clean energy and climate technology company leading the global energy industry towards achieving net zero.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 50 contacts → | ||||
Strong evidence “Vaulted is a waste management company that removes carbon.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 49 contacts → | ||||
Partial evidence “Plantd is the quickest way to pull carbon dioxide from the atmosphere and turn it into useful, durable products.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 45 contacts → | ||||
Partial evidence “We're building carbon capture for trains and trucks.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 43 contacts → | ||||
Strong evidence “We remove atmospheric carbon for a fraction of the cost while increasing crop yields.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 40 contacts → | ||||
Strong evidence “Zero Carbon Systems (ZCS) is a direct air capture company focused on delivering highly scalable, low cost, and low energy solutions for carbon dioxide removal.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 40 contacts → | ||||
Partial evidence “Aircapture is creating a circular commercial carbon economy utilizing novel Direct Air Capture (DAC) technology.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 40 contacts → | ||||
Indirect evidence “Reducing emissions is essential.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 40 contacts → | ||||
Strong evidence “Powered by nature to achieve impacts far beyond carbon removal.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: permanent carbon removal companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names permanent carbon removal companies.
- Partial evidence
- Its own public description names part of permanent carbon removal companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name permanent carbon removal companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 286 permanent carbon removal companies based in the United States
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 2,798 reachable decision-makers.
Free signup · no credit card
Permanent carbon removal companies based in the United States at a glance
As of Sep 20, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 286 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among permanent carbon removal companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United States whose own description of what they do matches “permanent carbon removal companies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names permanent carbon removal companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among permanent carbon removal companies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 2,798 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 20, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names permanent carbon removal companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many permanent carbon removal companies are there based in the United States?
RevenueBase identified 286 permanent carbon removal companies headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
California Resources Corporation, headquartered in Los Angeles, tops this list with the largest team on record.
Which city has the most permanent carbon removal companies?
Houston leads with 20 headquartered companies, followed by New York (18) and San Francisco (15).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 2,798 verified decision-maker contacts tracked across these 286 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 2026.
Ready to reach these companies? Verified emails and direct dials for all 286 permanent carbon removal companies based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Permanent carbon removal companies by geography
- Permanent carbon removal companies based in Australia
- Permanent carbon removal companies based in Brazil
- Permanent carbon removal companies based in Canada
- Permanent carbon removal companies based in France
- Permanent carbon removal companies based in Germany
- Permanent carbon removal companies based in India
- Permanent carbon removal companies based in the Netherlands
- Permanent carbon removal companies based in Norway
- Permanent carbon removal companies based in Switzerland
- Permanent carbon removal companies based in the United Kingdom
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Permanent carbon removal companies based in Australia
- Permanent carbon removal companies based in Brazil
- Permanent carbon removal companies based in Canada
- Permanent carbon removal companies based in France
- Permanent carbon removal companies based in Germany
- Permanent carbon removal companies based in India