Company lists · Data refreshed November 2026

Top 25 Clean energy consultancies worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Nov 5, 2026 22,037 companies tracked

RevenueBase identified 22,037 company matches for clean energy consultancies worldwide as of November 2026 and tracks 211,967 professional contacts across them, including 61,168 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for clean energy consultancies 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 5, 2026. Country and city lists for clean energy consultancies 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 5, 2026 How this list was built

22,037Companies

211,967Contacts tracked

61,168Verified emails

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The 25 largest clean energy consultancies worldwide

Ranked by team size

Top 25 of 22,037 company matches for clean energy consultancies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 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 5, 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 5, 2026 · View company records in RevenueBase
2	Dalkia	Exact match	Saint-andré-lez-lille, FranceHQ recorded Nov 5, 2026	10001+	9,075 contacts →
	Exact match “Dalkia : ensemble, relevons le défi climatique!” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3	RENEW	Exact match	Gurgaon, IndiaHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase
4	Clearesult	Exact match	Austin, TX, United StatesHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase
5	Steag Energy Services India Pvt. LTD	Exact match	Noida, IndiaHQ recorded Nov 5, 2026	1,001-5,000	1,704 contacts →
	Exact match “STEAG Energy Services India, established in 2001 as a wholly owned subsidiary of STEAG GmbH, Germany, is now part of the Bluspring Enterprises Limited, India’s integrated…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6	Fraunhofer-Institut FÜR Solare Energiesysteme ISE	Exact match	Freiburg, GermanyHQ recorded Nov 5, 2026	1,001-5,000	950 contacts →
	Exact match “The Fraunhofer Institute for Solar Energy Systems ISE in Freiburg, Germany is the largest solar research institute in Europe.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7	Willdan	Exact match	Anaheim, CA, United StatesHQ recorded Nov 5, 2026	1,001-5,000	897 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 · Nov 5, 2026 · View company records in RevenueBase
8	Cleanmax	Exact match	Mumbai, IndiaHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase
9	Resource Innovations	Exact match	Half Moon Bay, OR, United StatesHQ recorded Nov 5, 2026	501-1,000	793 contacts →
	Exact match “Resource Innovations (RI) is an energy transformation firm.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10	NWG S.P.A	Exact match	Prato, ItalyHQ recorded Nov 5, 2026	n/a	792 contacts →
	Exact match “Nata a Prato nel 2003 è oggi una delle più importanti realtà nel mercato della Green Economy.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11	South Pole	Exact match	Zurich, SwitzerlandHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase
12	WTS Energy	Exact match	The Hague, NetherlandsHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase
13	Enegan	Exact match	Vinci, ItalyHQ recorded Nov 5, 2026	201-500	665 contacts →
	Exact match “Enegan offre soluzioni personalizzate per le aziende abbinando alla fornitura di elettricità, gas e telecomunicazioni una vasta gamma di prodotti e servizi ad alto valore…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14	Serena	Exact match	São Paulo, BrazilHQ recorded Nov 5, 2026	201-500	659 contacts →
	Exact match “Making the provision of solar and wind energy accessible to everyone - from large global companies seeking sustainable profitability, to families seeking guilt-free energy…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15	Amara Nzero Brasil	Exact match	Salvador, BrazilHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase
16	Serentica	Exact match	Gurgaon, IndiaHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase
17	Revergy	Exact match	Seville, SpainHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase
18	Repower Italia	Exact match	Milan, ItalyHQ recorded Nov 5, 2026	501-1,000	535 contacts →
	Exact match “Efficienza energetica e mobilità elettrica per le PMI.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19	Kapsarc	Exact match	Riyadh, Saudi ArabiaHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase
20	XODUS	Exact match	Aberdeen, United KingdomHQ recorded Nov 5, 2026	201-500	527 contacts →
	Exact match “As a global energy consultancy, we unite our unique and diverse people to share knowledge, innovate and inspire change within the energy industry.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21	Natural Power	Exact match	Castle Douglas, United KingdomHQ recorded Nov 5, 2026	501-1,000	519 contacts →
	Exact match “Natural Power is a leading independent consultancy and service provider for the renewable energy sector.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22	Dupont Water Solutions	Exact match	Wilmington, DE, United StatesHQ recorded Nov 5, 2026	10001+	502 contacts →
	Exact match “We’re helping companies in every industry, in every corner of the globe make real progress.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23	CRAM	Exact match	Le Havre, FranceHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase
24	Groupe Coriance	Exact match	Noisy-le-grand, FranceHQ recorded Nov 5, 2026	501-1,000	491 contacts →
	Exact match “Pour une énergie propre et mieux utilisée Notre mission : fournir des solutions énergétiques performantes et économiques, tout en minimisant l'impact environnemental.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25	ADP Consulting	Exact match	Melbourne, AustraliaHQ recorded Nov 5, 2026	201-500	472 contacts →
	Exact match “ADP Consulting, an Ayesa company, is a sustainability-led engineering consultancy on a quest to inspire a better world through influence and design.” Recorded in the RevenueBase company graph · Nov 5, 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 consultancies”. 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 22,037 clean energy consultancies worldwide

See the full list, filter by size, metro and specialty, and access 61,168 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Clean energy consultancies worldwide at a glance

As of Nov 5, 2026

28.9%Verified-email coverage

9.6Average contacts per company

1-10Median size (employees)

1.7%Largest-city concentration · London

Nov 5, 2026Page data refreshed

Companies by employee count

1-10

13,894

11-50

6,239

51-200

1,334

201-500

246

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 consultancies are linked below.
What qualifies: Company records worldwide whose business descriptions match “clean energy consultancies” 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 61,168 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 5, 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 consultancies by location

164 lists · largest first

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

How many clean energy consultancies are there worldwide?

RevenueBase identified 22,037 company matches for clean energy consultancies 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 consultancies?

The United States leads with 2,112 companies, followed by the United Kingdom (1,868) and France (1,290). Every clean energy consultancies list by country and city is linked on this page.

Which city has the most clean energy consultancies?

London leads with 373 company records, followed by Madrid (232) and Paris (183).

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 61,168 professional contacts with verified work emails tracked across these 22,037 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 5, 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.