Company lists · Data refreshed November 2026

Top 25 Clean energy transition advisors worldwide

Name: Clean energy transition advisors worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 5,483 companies tracked

RevenueBase identified 5,483 company matches for clean energy transition advisors worldwide as of November 2026 and tracks 88,191 professional contacts across them, including 29,492 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for clean energy transition advisors 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 November 6, 2026. Country and city lists for clean energy transition advisors 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 Nov 6, 2026 How this list was built

5,483Companies

88,191Contacts tracked

29,492Verified emails

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The 25 largest clean energy transition advisors worldwide

Ranked by team size

Top 25 of 5,483 company matches for clean energy transition advisors worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 Nov 6, 2026	10001+	11,810 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 · Nov 6, 2026 · View company records in RevenueBase
2	RENEW	Exact match	Gurgaon, IndiaHQ recorded Nov 6, 2026	1,001-5,000	4,690 contacts →
	Exact match “ReNew is a leading decarbonisation solutions provider and the first Indian clean energy company to list on Nasdaq (Nasdaq: RNW).” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Clearesult	Exact match	Austin, TX, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,264 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 · Nov 6, 2026 · View company records in RevenueBase
4	Ameresco	Exact match	Framingham, MA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,570 contacts →
	Exact match “Ameresco, Inc.(NYSE:AMRC) is a leading energy infrastructure company delivering integrated solutions to create reliable power and modernize infrastructure.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Wärtsilä Energy	Exact match	Helsinki, FinlandHQ recorded Nov 6, 2026	10001+	991 contacts →
	Exact match “Wärtsilä leads the transition towards a 100% renewable energy future.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Anthesis Group	Exact match	London, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	956 contacts →
	Exact match “Anthesis guides clients to sustainable performance.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	RMI	Exact match	Boulder, CO, United StatesHQ recorded Nov 6, 2026	501-1,000	872 contacts →
	Exact match “Rocky Mountain Institute (RMI) is an independent, nonpartisan nonprofit founded in 1982 that transforms global energy systems through market-driven solutions to secure a…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Cleanmax	Exact match	Mumbai, IndiaHQ recorded Nov 6, 2026	201-500	852 contacts →
	Exact match “CleanMax is India's largest C&I renewable energy provider with total contracted capacity 6.8 GW, helping corporates and businesses go Net-Zero through customisable, tailored…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Energy Solutions	Exact match	Oakland, CA, United StatesHQ recorded Nov 6, 2026	201-500	815 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 · Nov 6, 2026 · View company records in RevenueBase
10	Resource Innovations	Exact match	Half Moon Bay, OR, United StatesHQ recorded Nov 6, 2026	501-1,000	793 contacts →
	Exact match “Resource Innovations (RI) is an energy transformation firm.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	South Pole	Exact match	Zurich, SwitzerlandHQ recorded Nov 6, 2026	501-1,000	790 contacts →
	Exact match “South Pole is the world's leading carbon asset developer and climate consultancy.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	WTS Energy	Exact match	The Hague, NetherlandsHQ recorded Nov 6, 2026	1,001-5,000	675 contacts →
	Exact match “The Energy Transition brings new challenges and opportunities to all of us.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	E CO	Exact match	London, United KingdomHQ recorded Nov 6, 2026	n/a	645 contacts →
	Exact match “For over 26 years, our consultants have been supporting and guiding our clients to achieve low-carbon climate-resilient development.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Amara Nzero Brasil	Exact match	Salvador, BrazilHQ recorded Nov 6, 2026	501-1,000	551 contacts →
	Exact match “Somos uma empresa com uma grande experiência integral em energia sustentável fortemente comprometida com a Transição Energética.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Serentica	Exact match	Gurgaon, IndiaHQ recorded Nov 6, 2026	201-500	549 contacts →
	Exact match “Serentica Renewables India Private Limited,(Serentica) is a is an end-to-end energy solutions company enabling large-scale heavy energy intensive industries and sector to…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	German Energy Agency Dena	Exact match	Berlin, GermanyHQ recorded Nov 6, 2026	501-1,000	525 contacts →
	Exact match “dena is a centre of excellence for the applied energy transition and climate protection.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	CRAM	Exact match	Le Havre, FranceHQ recorded Nov 6, 2026	501-1,000	494 contacts →
	Exact match “Nous sommes des femmes et des hommes engagés, qui chaque matin se lèvent avec une mission : être des acteurs clés de la transition énergétique.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Inddigo	Exact match	Chambéry, FranceHQ recorded Nov 6, 2026	201-500	457 contacts →
	Exact match “Ingénierie du développement durable” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Veregy	Exact match	Phoenix, AZ, United StatesHQ recorded Nov 6, 2026	501-1,000	413 contacts →
	Exact match “Veregy is an award-winning NAESCO-Accredited decarbonization company focusing on accelerating and simplifying the Energy Transition.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Ecosecurities	Exact match	Geneva, SwitzerlandHQ recorded Nov 6, 2026	51-200	411 contacts →
	Exact match “EcoSecurities is a global leader in climate solutions, harnessing the power of nature, technology, and finance to accelerate decarbonisation efforts worldwide.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	TRIO	Exact match	Irvine, MA, United StatesHQ recorded Nov 6, 2026	201-500	393 contacts →
	Exact match “We are Trio – global energy and sustainability advisors.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Doris Group	Exact match	Paris, FranceHQ recorded Nov 6, 2026	501-1,000	380 contacts →
	Exact match “DORIS is a leader in the provision of engineering, advisory, and project management services to the energy industry.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Greenflex	Exact match	Paris, FranceHQ recorded Nov 6, 2026	501-1,000	374 contacts →
	Exact match “Since 2009, GreenFlex has been a key partner in the energy, environmental and societal transformation of organizations, enabling them to change their trajectory towards an economy…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Greenyellow	Exact match	Puteaux, FranceHQ recorded Nov 6, 2026	501-1,000	358 contacts →
	Exact match “In 17 years, GreenYellow has become a major player in the energy transition in France and abroad and a true partner of companies and communities.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Manergy	Exact match	Créteil, FranceHQ recorded Nov 6, 2026	501-1,000	330 contacts →
	Exact match “Depuis plus de 40 ans, MANERGY s’affirme comme une société indépendante de référence, spécialisée dans l’ingénierie et le conseil en transition énergétique et environnementale.” Recorded in the RevenueBase company graph · Nov 6, 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 “clean energy transition advisors”. 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 5,483 clean energy transition advisors worldwide

See the full list, filter by size, metro and specialty, and access 29,492 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Clean energy transition advisors worldwide at a glance

As of Nov 6, 2026

33.4%Verified-email coverage

16.1Average contacts per company

1-10Median size (employees)

3.3%Largest-city concentration · London

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

3,582

11-50

1,434

51-200

311

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

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 clean energy transition advisors are linked below.
What qualifies: Company records worldwide whose business descriptions match “clean energy transition advisors” 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 29,492 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 November 6, 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.

Clean energy transition advisors by location

67 lists · largest first

Every Clean energy transition advisors 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 “clean energy transition advisors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many clean energy transition advisors are there worldwide?

RevenueBase identified 5,483 company matches for clean energy transition advisors worldwide as of November 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 clean energy transition advisors?

The United States leads with 731 companies, followed by the United Kingdom (444) and France (431). Every clean energy transition advisors list by country and city is linked on this page.

Which city has the most clean energy transition advisors?

London leads with 179 company records, followed by Paris (108) and Madrid (53).

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 29,492 professional contacts with verified work emails tracked across these 5,483 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 November 6, 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.