Company lists · Data refreshed September 2026

Top 25 Emission reduction consulting firms worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 17,059 companies tracked

RevenueBase identified 17,059 company matches for emission reduction consulting firms worldwide as of September 2026 and tracks 188,124 professional contacts across them, including 66,660 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for emission reduction 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 28, 2026. Country and city lists for emission reduction 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 28, 2026 How this list was built

17,059Companies

188,124Contacts tracked

66,660Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest emission reduction consulting firms worldwide

Ranked by team size

Top 25 of 17,059 company matches for emission reduction consulting firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 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	Engie Solutions France	Exact match	La Garenne-colombes, FranceHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
2	ERM	Exact match	London, United KingdomHQ recorded Sep 28, 2026	5,001-10,000	9,119 contacts →
	Exact match “Sustainability is our business.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
3	Dalkia	Exact match	Saint-andré-lez-lille, FranceHQ recorded Sep 28, 2026	10001+	8,427 contacts →
	Exact match “Dalkia : ensemble, relevons le défi climatique!” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
4	SLR Consulting	Exact match	London, United KingdomHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
5	Ambipar	Exact match	Sao Paulo, BrazilHQ recorded Sep 28, 2026	10001+	2,599 contacts →
	Exact match “Our mission is to promote ecological transformation by investing in decarbonization projects, circular economy, energy transition, and environmental regeneration.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6	Mckinstry	Exact match	Seattle, WA, United StatesHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
7	Clearesult	Exact match	Austin, TX, United StatesHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
8	Ecovadis	Exact match	Paris, JapanHQ recorded Sep 28, 2026	1,001-5,000	1,854 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9	Swca Environmental Consultants	Exact match	Phoenix, AZ, United StatesHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
10	Montrose Environmental Group	Exact match	Little Rock, AR, United StatesHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
11	Adec Innovations	Exact match	Irvine, CA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	1,304 contacts →
	Exact match “ADEC Innovations seamlessly delivers fully integrated, cost-effective industry expertise, business process & data management, and software services.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12	DGE Danmark	Exact match	Højbjerg, DenmarkHQ recorded Sep 28, 2026	n/a	1,176 contacts →
	Exact match “Miljø er vores kernekompetence og vores ansvar.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13	OLA	Exact match	Austin, TX, United StatesHQ recorded Sep 28, 2026	n/a	1,145 contacts →
	Exact match “OLA Sustainability, LLC OLA Sustainability is a consulting firm that focuses on integrating sustainable practices into commercial and multifamily design projects.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14	Alliance Technical Group	Exact match	Decatur, AL, United StatesHQ recorded Sep 28, 2026	1,001-5,000	956 contacts →
	Exact match “Alliance is a new kind of environmental services company-powered by innovation, focused on service, and committed to client success.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15	Anthesis Group	Exact match	London, United KingdomHQ recorded Sep 28, 2026	1,001-5,000	894 contacts →
	Exact match “Anthesis guides clients to sustainable performance.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16	Achilles Information Limited	Exact match	Abingdon, United KingdomHQ recorded Sep 28, 2026	501-1,000	836 contacts →
	Exact match “For more than 30 years, Achilles has protected organisations’ business interests and reputations by providing unrivalled levels of supply chain transparency, carbon reduction and…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17	South Pole	Exact match	Zurich, SwitzerlandHQ recorded Sep 28, 2026	501-1,000	811 contacts →
	Exact match “South Pole is the world's leading carbon asset developer and climate consultancy.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18	Interagua Ecuador	Exact match	Guayaquil, EcuadorHQ recorded Sep 28, 2026	501-1,000	783 contacts →
	Exact match “Somos una empresa sólida, confiable, orientada al cliente; líder en el manejo ambiental, con procesos de calidad, tecnología y recursos humanos competentes.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19	Energy Solutions	Exact match	Oakland, CA, United StatesHQ recorded Sep 28, 2026	201-500	772 contacts →
	Exact match “Our mission is simple - to combat climate change through market-based, cost-effective energy, carbon, and water management solutions that make big impacts.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20	Inerco	Exact match	Sevilla, SpainHQ recorded Sep 28, 2026	1,001-5,000	688 contacts →
	Exact match “INERCO, with 30 years of experience, offers comprehensive services and develops advanced technologies that contribute to sustainable industrial development, acting as a leader in…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21	Uniqus Consultech INC	Exact match	San Jose, CA, United StatesHQ recorded Sep 28, 2026	501-1,000	675 contacts →
	Exact match “Uniqus Consultech is an AI and global tech-enabled consulting company that specializes in Accounting & Reporting Consulting, Governance, Risk & Compliance, Sustainability &…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22	Ricardo PLC	Exact match	London, United KingdomHQ recorded Sep 28, 2026	1,001-5,000	670 contacts →
	Exact match “Click the 'Follow' button and explore careers at Ricardo on our 'Jobs' and 'Life' tabs and at careers.ricardo.com.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23	Antea Group USA	Exact match	St Paul, MN, United StatesHQ recorded Sep 28, 2026	1,001-5,000	658 contacts →
	Exact match “Antea Group is an international engineering and environmental consulting firm specializing in full-service solutions in the fields of environment, health and safety, and…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
24	ACT Group	Exact match	Amsterdam, NetherlandsHQ recorded Sep 28, 2026	501-1,000	556 contacts →
	Exact match “As the leading environmental solutions partner for organizations globally, ACT helps its partners meet increasing environmental action and disclosure expectations from regulators…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
25	CTA Engenharia	Exact match	Rio De Janeiro, BrazilHQ recorded Sep 28, 2026	201-500	540 contacts →
	Exact match “A CTA foi criada em 1995, em Belo Horizonte Minas Gerais, ampliando sua atividade e posicionando sua sede no estado do Rio de Janeiro em Duque de Caxias, próximo ao Pólo…” Recorded in the RevenueBase company graph · Sep 28, 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 “emission reduction 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 17,059 emission reduction consulting firms worldwide

See the full list, filter by size, metro and specialty, and access 66,660 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Emission reduction consulting firms worldwide at a glance

As of Sep 28, 2026

35.4%Verified-email coverage

11.0Average contacts per company

1-10Median size (employees)

2.1%Largest-city concentration · London

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

12,245

11-50

3,849

51-200

694

201-500

128

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 emission reduction consulting firms are linked below.
What qualifies: Company records worldwide whose business descriptions match “emission reduction 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 66,660 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 28, 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.

Emission reduction consulting firms by location

98 lists · largest first

Every Emission reduction 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 “emission reduction consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many emission reduction consulting firms are there worldwide?

RevenueBase identified 17,059 company matches for emission reduction 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?

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

Which country has the most emission reduction consulting firms?

The United States leads with 2,094 companies, followed by Brazil (1,600) and the United Kingdom (1,122). Every emission reduction consulting firms list by country and city is linked on this page.

Which city has the most emission reduction consulting firms?

London leads with 359 company records, followed by Sao Paulo (274) and Paris (211).

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 66,660 professional contacts with verified work emails tracked across these 17,059 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 28, 2026.

Ready to reach these companies? Verified emails and direct dials for all 17,059 emission reduction consulting firms worldwide. Start with a free account, no credit card.

Download this list →

Related lists

Browse the directory

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.