Company lists · Data refreshed September 2026

Top 25 Climate tech consulting firms worldwide

Name: Climate tech consulting firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 18,056 companies tracked

RevenueBase identified 18,056 company matches for climate tech consulting firms worldwide as of September 2026 and tracks 350,705 professional contacts across them, including 131,039 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for climate tech consulting firms worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 27, 2026. Country and city lists for climate tech consulting firms follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 SmartSearch · Exact Recorded Sep 27, 2026 How this list was built

18,056Companies

350,705Contacts tracked

131,039Verified emails

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The 25 largest climate tech consulting firms worldwide

Ranked by team size

Top 25 of 18,056 company matches for climate tech consulting firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 27, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Worley	Exact match	Sydney, AustraliaHQ recorded Sep 27, 2026	10001+	34,763 contacts →
	Exact match “Worley is a global professional services company of energy, chemicals and resources experts headquartered in Australia.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
2	Arcadis	Exact match	Amsterdam, NetherlandsHQ recorded Sep 27, 2026	10001+	33,846 contacts →
	Exact match “Arcadis is a leading global partner, delivering transformative projects with businesses, cities and industries.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
3	Stantec	Exact match	Edmonton, AB, CanadaHQ recorded Sep 27, 2026	10001+	28,416 contacts →
	Exact match “Stantec empowers clients, people, and communities to rise to the world’s greatest challenges at a time when the world faces more unprecedented concerns than ever before.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
4	Engie Solutions France	Exact match	La Garenne-colombes, FranceHQ recorded Sep 27, 2026	10001+	12,011 contacts →
	Exact match “Les activités Infrastructures Energétiques Locales d’ENGIE accompagnent les collectivités, les industries et le secteur du bâtiment sur la voie de la décarbonation.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
5	Carrier Hvac	Exact match	United StatesHQ recorded Sep 27, 2026	10001+	10,099 contacts →
	Exact match “Carrier is a global leader in intelligent climate and energy solutions, pioneering sustainable innovations in climate technologies.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
6	ERM	Exact match	London, United KingdomHQ recorded Sep 27, 2026	5,001-10,000	9,119 contacts →
	Exact match “Sustainability is our business.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
7	Dalkia	Exact match	Saint-andré-lez-lille, FranceHQ recorded Sep 27, 2026	10001+	8,427 contacts →
	Exact match “Dalkia : ensemble, relevons le défi climatique!” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
8	Johnson Matthey	Exact match	London, ItalyHQ recorded Sep 27, 2026	5,001-10,000	8,053 contacts →
	Exact match “Johnson Matthey (JM) is a world leader in platinum group metals (PGMs).” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
9	SLR Consulting	Exact match	London, United KingdomHQ recorded Sep 27, 2026	1,001-5,000	3,848 contacts →
	Exact match “SLR is a committed partner in our clients’ sustainability journeys.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
10	Veolia UK	Exact match	London, United KingdomHQ recorded Sep 27, 2026	10001+	2,823 contacts →
	Exact match “Veolia UK provides solutions for ecological transformation which means reconciling human progress with environmental protection.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
11	APTIM	Exact match	Baton Rouge, LA, United StatesHQ recorded Sep 27, 2026	1,001-5,000	2,639 contacts →
	Exact match “APTIM enhances the quality of the environment, wellbeing of people, resilience of communities, and opportunity for employees to make a difference, not just a living.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
12	Mckinstry	Exact match	Seattle, WA, United StatesHQ recorded Sep 27, 2026	1,001-5,000	2,213 contacts →
	Exact match “We're a national construction and energy services company dedicated to innovating the waste and climate harm out of the built environment.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
13	Clearesult	Exact match	Austin, TX, United StatesHQ recorded Sep 27, 2026	1,001-5,000	2,121 contacts →
	Exact match “CLEAResult is the largest provider of energy efficiency, energy transition and energy sustainability services in North America.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
14	Ricardo	Exact match	West Sussex, United KingdomHQ recorded Sep 27, 2026	1,001-5,000	2,104 contacts →
	Exact match “Ricardo, a member of @WSP, is a global engineering company, specialising in complex propulsion, driveline and energy systems, delivering high integrity solutions for customers…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
15	Baycurrent	Exact match	港区, JapanHQ recorded Sep 27, 2026	5,001-10,000	1,900 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
16	BBA Consultants	Exact match	Mont-saint-hilaire, QC, CanadaHQ recorded Sep 27, 2026	1,001-5,000	1,863 contacts →
	Exact match “We help companies with their challenges and transformation by relying on our sharp business acumen, extensive practical experience and vast technological curiosity.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
17	Swca Environmental Consultants	Exact match	Phoenix, AZ, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,629 contacts →
	Exact match “Founded on a commitment to sound science and creative solutions, SWCA is a leader in environmental and management consulting services.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
18	Montrose Environmental Group	Exact match	Little Rock, AR, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,529 contacts →
	Exact match “Onterris (formerly Montrose Environmental Group) was one of the first to see environmental responsibility as not just an imperative but as a strategic asset.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
19	Vulcain Engineering Group	Exact match	Neuilly-sur-seine, FranceHQ recorded Sep 27, 2026	5,001-10,000	1,496 contacts →
	Exact match “Vulcain Engineering Group is a multi-specialist engineering and consulting group serving industrial companies across the globe, focused on critical sectors: energy, health…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
20	Ameresco	Exact match	Framingham, MA, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,383 contacts →
	Exact match “Ameresco, Inc.(NYSE:AMRC) is a leading energy infrastructure solutions provider dedicated to helping customers reduce costs, enhance resilience, and decarbonize to net zero in the…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
21	Fichtner	Exact match	Stuttgart, GermanyHQ recorded Sep 27, 2026	1,001-5,000	1,279 contacts →
	Exact match “As a leading, independent engineering and consultancy enterprise active in the sectors of energy and infrastructure, Fichtner handles challenging projects in countries all over…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
22	DGE Danmark	Exact match	Højbjerg, DenmarkHQ recorded Sep 27, 2026	n/a	1,176 contacts →
	Exact match “Miljø er vores kernekompetence og vores ansvar.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
23	Verdantas	Exact match	Tampa, FL, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,139 contacts →
	Exact match “At Verdantas, we blend engineering and environmental science together with advanced technology and world-renowned labs to create solutions with the big picture in mind.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
24	Anthesis Group	Exact match	London, United KingdomHQ recorded Sep 27, 2026	1,001-5,000	894 contacts →
	Exact match “Anthesis guides clients to sustainable performance.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
25	Willdan	Exact match	Anaheim, CA, United StatesHQ recorded Sep 27, 2026	1,001-5,000	851 contacts →
	Exact match “Willdan (NASDAQ: WLDN) provides professional consulting and technical services to utilities, public agencies and private industry throughout the United States.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “climate tech consulting firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 18,056 climate tech consulting firms worldwide

See the full list, filter by size, metro and specialty, and access 131,039 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Climate tech consulting firms worldwide at a glance

As of Sep 27, 2026

37.4%Verified-email coverage

19.4Average contacts per company

1-10Median size (employees)

2.3%Largest-city concentration · London

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

12,359

11-50

4,414

51-200

879

201-500

188

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

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for climate tech consulting firms are linked below.
What qualifies: Company records worldwide whose business descriptions match “climate tech consulting firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 131,039 professional contacts with verified work emails across the full matched dataset. 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 27, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Climate tech consulting firms by location

90 lists · largest first

Every Climate tech consulting firms 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 SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “climate tech consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many climate tech consulting firms are there worldwide?

RevenueBase identified 18,056 company matches for climate tech consulting firms worldwide as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Worley tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most climate tech consulting firms?

The United States leads with 1,981 companies, followed by Brazil (1,204) and France (1,190). Every climate tech consulting firms list by country and city is linked on this page.

Which city has the most climate tech consulting firms?

London leads with 411 company records, followed by Paris (245) and Sao Paulo (222).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 131,039 professional contacts with verified work emails tracked across these 18,056 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 27, 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 SmartSearch, 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.