Company lists · Data refreshed September 2026

Top 25 Geoengineering companies worldwide

Name: Geoengineering companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 3,114 companies tracked

RevenueBase identified 3,114 geoengineering companies worldwide as of September 2026 and tracks 50,863 professional contacts across them, including 17,727 with verified work emails. The United States is the largest market and London the largest hub.

This list covers geoengineering companies worldwide, 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 30, 2026. Country and city lists for geoengineering companies follow the table.

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.

How to read this list RevenueBase Smart Search rating on every row Refreshed Sep 30, 2026 86% judged on-target in blind review

3,114Companies

50,863Contacts tracked

17,727Verified emails

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The 25 largest geoengineering companies worldwide

Ranked by team size

Top 25 of 3,114 geoengineering companies worldwide, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to geoengineering companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	JAN DE NUL Group	Indirect evidence	Capellen, LuxembourgHQ checked Sep 30, 2026	5,001-10,000	5,424 contacts →
	Indirect evidence “We are World Builders shaping water, land and energy.” Source: RevenueBase Database · checked Sep 30, 2026
2	Mckinstry	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 30, 2026	1,001-5,000	2,213 contacts →
	Indirect evidence “We're a national construction and energy services company dedicated to innovating the waste and climate harm out of the built environment.” Source: RevenueBase Database · checked Sep 30, 2026
3	Bechtel Power	Indirect evidence	n/a	10001+	1,768 contacts →
	Indirect evidence “Visit the Bechtel Corporation company page Bechtel is one of the most respected global engineering, construction, and project management companies.” Source: RevenueBase Database · checked Sep 30, 2026
4	California Resources Corporation	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 30, 2026	1,001-5,000	1,095 contacts →
	Indirect evidence “California Resources Corporation (CRC) is an independent energy and carbon management company committed to energy transition.” Source: RevenueBase Database · checked Sep 30, 2026
5	Sepcoiii Electric Power Construction Co., LTD	Indirect evidence	Dubai, United Arab EmiratesHQ checked Sep 30, 2026	10001+	1,090 contacts →
	Indirect evidence “Electrical Power Construction Co, Ltd.” Source: RevenueBase Database · checked Sep 30, 2026
6	South Pole	Indirect evidence	Zurich, SwitzerlandHQ checked Sep 30, 2026	501-1,000	811 contacts →
	Indirect evidence “South Pole is the world's leading carbon asset developer and climate consultancy.” Source: RevenueBase Database · checked Sep 30, 2026
7	Energy Solutions	Indirect evidence	Oakland, CA, United StatesHQ checked Sep 30, 2026	201-500	772 contacts →
	Indirect evidence “Our mission is simple - to combat climate change through market-based, cost-effective energy, carbon, and water management solutions that make big impacts.” Source: RevenueBase Database · checked Sep 30, 2026
8	Shimmick Corporation	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 30, 2026	1,001-5,000	760 contacts →
	Indirect evidence “At Shimmick (NASDAQ: SHIM), we’re shaping the future of sustainable infrastructure through innovative solutions that advance communities and protect our environment.” Source: RevenueBase Database · checked Sep 30, 2026
9	STX Group	Indirect evidence	Amsterdam, NetherlandsHQ checked Sep 30, 2026	501-1,000	502 contacts →
	Indirect evidence “STX Group is a leading global firm in environmental commodities trading and climate finance.” Source: RevenueBase Database · checked Sep 30, 2026
10	Chakr Innovation	Indirect evidence	Gurgaon, IndiaHQ checked Sep 30, 2026	501-1,000	476 contacts →
	Indirect evidence “Chakr Innovation is a pioneering Indian cleantech startup, founded by IIT Delhi graduates, dedicated to revolutionizing air quality with cutting-edge material science technology.” Source: RevenueBase Database · checked Sep 30, 2026
11	Climeworks	Indirect evidence	Opfikon, SwitzerlandHQ checked Sep 30, 2026	201-500	435 contacts →
	Indirect evidence “Climeworks is a leading high-quality carbon removal provider, combining decades of expertise in Direct Air Capture (DAC) technology with holistic carbon removal solutions.” Source: RevenueBase Database · checked Sep 30, 2026
12	Assystem Radicon	Indirect evidence	Khobar, Saudi ArabiaHQ checked Sep 30, 2026	201-500	387 contacts →
	Indirect evidence “Assystem is supporting Saudi Arabia’s switch to low-carbon energy and infrastructure through its Radicon subsidiary.” Source: RevenueBase Database · checked Sep 30, 2026
13	Veregy	Indirect evidence	Phoenix, MO, United StatesHQ checked Sep 30, 2026	501-1,000	383 contacts →
	Indirect evidence “Veregy is an award-winning NAESCO-Accredited decarbonization company focusing on accelerating and simplifying the Energy Transition.” Source: RevenueBase Database · checked Sep 30, 2026
14	Quebec S.A	Indirect evidence	Belo Horizonte, BrazilHQ checked Sep 30, 2026	501-1,000	381 contacts →
	Indirect evidence “A Quebec, sediada em Belo Horizonte/MG, iniciou suas atividades em agosto de 1990 com a construção das estruturas de concreto da Barragem de Calhauzinho, em Araçuaí/MG.” Source: RevenueBase Database · checked Sep 30, 2026
15	3degrees Group, INC	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 30, 2026	201-500	324 contacts →
	Indirect evidence “3Degrees is a leading global climate solutions provider, pioneer of environmental markets, and Certified B Corporation.” Source: RevenueBase Database · checked Sep 30, 2026
16	Carrier Hvac Europe	Indirect evidence	United StatesHQ checked Sep 30, 2026	10001+	289 contacts →
	Indirect evidence “Carrier is a global leader in intelligent climate and energy solutions, pioneering sustainable innovations in climate technologies.” Source: RevenueBase Database · checked Sep 30, 2026
17	SLB Capturi	Indirect evidence	Lysaker, NorwayHQ checked Sep 30, 2026	201-500	243 contacts →
	Indirect evidence “At SLB Capturi, we are dedicated to making carbon capture a reality today.” Source: RevenueBase Database · checked Sep 30, 2026
18	Energy Recovery, INC	Indirect evidence	San Leandro, CA, United StatesHQ checked Sep 30, 2026	201-500	219 contacts →
	Indirect evidence “Energy Recovery (Nasdaq: ERII) designs and manufactures world-class energy-saving technology for critical infrastructure that communities rely on every day, driving a more…” Source: RevenueBase Database · checked Sep 30, 2026
19	TCI Gecomp	Indirect evidence	Almería, SpainHQ checked Sep 30, 2026	501-1,000	216 contacts →
	Indirect evidence “TCI GECOMP es una empresa de Ingeniería y Construcción especializada en Energías renovables e Hidrógeno Verde con presencia en España, Perú, Chile y Argentina.” Source: RevenueBase Database · checked Sep 30, 2026
20	Aeroseal	Indirect evidence	Miamisburg, OH, United StatesHQ checked Sep 30, 2026	51-200	215 contacts →
	Indirect evidence “Aeroseal is a climate tech company on a mission - reduce the world's carbon emissions by 1 gigaton annually.” Source: RevenueBase Database · checked Sep 30, 2026
21	LAB	Indirect evidence	Lyon, FranceHQ checked Sep 30, 2026	51-200	210 contacts →
	Indirect evidence “LAB is a globally engineering, construction and services entity, providing to its customers turnkey solutions to reduce all kinds of emissions to Air.” Source: RevenueBase Database · checked Sep 30, 2026
22	Nextchem	Indirect evidence	ItalyHQ checked Sep 30, 2026	501-1,000	203 contacts →
	Indirect evidence “NEXTCHEM is MAIRE’s company dedicated to Sustainable Technology Solutions.” Source: RevenueBase Database · checked Sep 30, 2026
23	Anew Climate	Indirect evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	201-500	200 contacts →
	Indirect 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 30, 2026
24	Carbon Clean	Indirect evidence	London, United KingdomHQ checked Sep 30, 2026	51-200	188 contacts →
	Indirect evidence “Carbon Clean is the point-source carbon capture expert, driving the decarbonisation of hard-to-abate industries for more than 15 years.” Source: RevenueBase Database · checked Sep 30, 2026
25	VMC Group	Indirect evidence	Bloomingdale, NJ, United StatesHQ checked Sep 30, 2026	51-200	187 contacts →
	Indirect evidence “We design & build solutions that allow customers to better manage the negative environmental effects of air, noise, seismic, vibration, & shock.” Source: RevenueBase Database · checked Sep 30, 2026

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: geoengineering 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 geoengineering companies.
Partial evidence: Its own public description names part of geoengineering companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name geoengineering 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 3,114 geoengineering companies worldwide

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Geoengineering companies worldwide at a glance

As of Sep 30, 2026

34.9%Verified-email coverage

16.3Average contacts per company

1-10Median size (employees)

2.7%Largest-city concentration · London

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

1,781

11-50

952

51-200

272

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 geoengineering 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.
Coverage: Every country. Country and city lists for geoengineering companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “geoengineering 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 geoengineering 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 geoengineering companies, and records with no verified work email.
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, 17,727 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 30, 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.

Geoengineering companies by location

19 lists · largest first

Every Geoengineering companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 geoengineering 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 geoengineering companies are there worldwide?

RevenueBase identified 3,114 geoengineering companies worldwide 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?

JAN DE NUL Group, headquartered in Capellen, tops this list with the largest team on record.

Which country has the most geoengineering companies?

The United States leads with 579 companies, followed by France (222) and the United Kingdom (192). Every geoengineering companies list by country and city is linked on this page.

Which city has the most geoengineering companies?

London leads with 83 headquartered companies, followed by Calgary (45) and Houston (36).

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 17,727 verified decision-maker contacts tracked across these 3,114 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 30, 2026.

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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.