Company lists · Data refreshed November 2026

Top 25 Clean energy transition consultants worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 9,281 companies tracked

RevenueBase identified 9,281 company matches for clean energy transition consultants worldwide as of November 2026 and tracks 127,934 professional contacts across them, including 39,416 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 consultants 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 consultants 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

9,281Companies

127,934Contacts tracked

39,416Verified emails

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

The 25 largest clean energy transition consultants worldwide

Ranked by team size

Top 25 of 9,281 company matches for clean energy transition consultants 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	Powur, PBC	Exact match	San Diego, United StatesHQ recorded Nov 6, 2026	n/a	1,155 contacts →
	Exact match “The Powur Mission: Accelerate the adoption of clean energy worldwide We're empowering our community of homeowners and advisors to thrive in the global shift to sustainable energy.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	VITO	Exact match	Mol, BelgiumHQ recorded Nov 6, 2026	1,001-5,000	1,153 contacts →
	Exact match “VITO is an independent Flemish research organisation in the area of cleantech and sustainable development.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	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
8	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
9	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
10	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
11	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
12	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
13	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
14	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
15	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
16	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
17	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
18	Revergy	Exact match	Seville, SpainHQ recorded Nov 6, 2026	501-1,000	545 contacts →
	Exact match “REVERGY nace mediante un proyecto de profesionales procedentes de diferentes ámbitos del sector de las energías renovables con el fin de presentar un proyecto marcado por la…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Kapsarc	Exact match	Riyadh, Saudi ArabiaHQ recorded Nov 6, 2026	51-200	533 contacts →
	Exact match “King Abdullah Petroleum Studies and Research Center (KAPSARC) is an advisory think tank within global energy economics and sustainability providing services to entities and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	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
21	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
22	Energiewacht	Exact match	Zwolle, NetherlandsHQ recorded Nov 6, 2026	1,001-5,000	464 contacts →
	Exact match “Welkom in de boeiende wereld van de energietransitie.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Ampin Energy Transition	Exact match	New Delhi, IndiaHQ recorded Nov 6, 2026	201-500	464 contacts →
	Exact match “AMPIN Energy Transition is India’s leading renewable energy transition company with a total portfolio of 5GWp+ spread across 23 states in the country.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	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
25	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

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 consultants”. 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 9,281 clean energy transition consultants worldwide

See the full list, filter by size, metro and specialty, and access 39,416 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Clean energy transition consultants worldwide at a glance

As of Nov 6, 2026

30.8%Verified-email coverage

13.8Average contacts per company

1-10Median size (employees)

2.5%Largest-city concentration · London

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

6,141

11-50

2,366

51-200

518

201-500

100

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 consultants are linked below.
What qualifies: Company records worldwide whose business descriptions match “clean energy transition consultants” 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 39,416 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 consultants by location

81 lists · largest first

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

How many clean energy transition consultants are there worldwide?

RevenueBase identified 9,281 company matches for clean energy transition consultants 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 consultants?

The United States leads with 1,154 companies, followed by France (773) and the United Kingdom (701). Every clean energy transition consultants list by country and city is linked on this page.

Which city has the most clean energy transition consultants?

London leads with 233 company records, followed by Paris (160) and Madrid (88).

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 39,416 professional contacts with verified work emails tracked across these 9,281 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.

Ready to reach these companies? Verified emails and direct dials for all 9,281 clean energy transition consultants 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.