Company lists · Data refreshed October 2026

Top 25 Clean energy policy advisors worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Oct 9, 2026 11,870 companies tracked

RevenueBase identified 11,870 company matches for clean energy policy advisors worldwide as of October 2026 and tracks 103,075 professional contacts across them, including 30,988 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for clean energy policy 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 October 9, 2026. Country and city lists for clean energy policy 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 Oct 9, 2026 How this list was built

11,870Companies

103,075Contacts tracked

30,988Verified emails

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The 25 largest clean energy policy advisors worldwide

Ranked by team size

Top 25 of 11,870 company matches for clean energy policy advisors worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 9, 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	Dalkia	Exact match	Saint-andré-lez-lille, FranceHQ recorded Oct 9, 2026	10001+	8,823 contacts →
	Exact match “Dalkia : ensemble, relevons le défi climatique!” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
2	Powur, PBC	Exact match	San Diego, United StatesHQ recorded Oct 9, 2026	n/a	1,097 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 · Oct 9, 2026 · View company records in RevenueBase
3	Willdan	Exact match	Anaheim, CA, United StatesHQ recorded Oct 9, 2026	1,001-5,000	872 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 · Oct 9, 2026 · View company records in RevenueBase
4	Resource Innovations	Exact match	Half Moon Bay, CA, United StatesHQ recorded Oct 9, 2026	501-1,000	774 contacts →
	Exact match “Resource Innovations (RI) is an energy transformation firm.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
5	Inerco	Exact match	Seville, SpainHQ recorded Oct 9, 2026	1,001-5,000	735 contacts →
	Exact match “INERCO is a multinational technology company specialising in sustainability.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
6	WTS Energy	Exact match	The Hague, NetherlandsHQ recorded Oct 9, 2026	1,001-5,000	654 contacts →
	Exact match “The Energy Transition brings new challenges and opportunities to all of us.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
7	Grupotec	Exact match	Valencia, SpainHQ recorded Oct 9, 2026	501-1,000	560 contacts →
	Exact match “GRUPOTEC - Empresa multidisciplinar de ingeniería y arquitectura y líder en el sector de la energía fotovoltaica.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
8	Revergy	Exact match	Seville, SpainHQ recorded Oct 9, 2026	501-1,000	538 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 · Oct 9, 2026 · View company records in RevenueBase
9	Amara Nzero Brasil	Exact match	Salvador, BrazilHQ recorded Oct 9, 2026	501-1,000	531 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 · Oct 9, 2026 · View company records in RevenueBase
10	Kapsarc	Exact match	Riyadh, Saudi ArabiaHQ recorded Oct 9, 2026	51-200	518 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 · Oct 9, 2026 · View company records in RevenueBase
11	Natural Power	Exact match	Castle Douglas, United KingdomHQ recorded Oct 9, 2026	501-1,000	517 contacts →
	Exact match “Natural Power is a leading independent consultancy and service provider for the renewable energy sector.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
12	Synergy Consulting, INC	Exact match	Washington, DC, United StatesHQ recorded Oct 9, 2026	51-200	433 contacts →
	Exact match “Synergy Consulting is Global Leader in Financial and Corporate Advisory.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
13	Fichtner Consulting Engineers LTD	Exact match	Stockport, United KingdomHQ recorded Oct 9, 2026	51-200	427 contacts →
	Exact match “Fichtner is one of the world's leading independent engineering consultancy firms.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
14	Takkion	Exact match	Evansville, WY, United StatesHQ recorded Oct 9, 2026	1,001-5,000	409 contacts →
	Exact match “TAKKION is Moving Energy Forward.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
15	TRIO	Exact match	Irvine, CA, United StatesHQ recorded Oct 9, 2026	201-500	387 contacts →
	Exact match “We are Trio – global energy and sustainability advisors.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
16	AESA	Exact match	Barcelona, SpainHQ recorded Oct 9, 2026	n/a	376 contacts →
	Exact match “Ingeniería y Consultoría Energética orientada a la búsqueda y el desarrollo de soluciones energéticas de alta eficiencia para sus Clientes.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
17	Doris Group	Exact match	Paris, FranceHQ recorded Oct 9, 2026	501-1,000	370 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 · Oct 9, 2026 · View company records in RevenueBase
18	Greenflex	Exact match	Paris, FranceHQ recorded Oct 9, 2026	501-1,000	368 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 · Oct 9, 2026 · View company records in RevenueBase
19	NUS Consulting Group	Exact match	Park Ridge, NJ, United StatesHQ recorded Oct 9, 2026	201-500	360 contacts →
	Exact match “National Utility Service, Inc.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
20	EMM Consulting PTY Limited	Exact match	St Leonards, AustraliaHQ recorded Oct 9, 2026	201-500	354 contacts →
	Exact match “At EMM, we believe that a sustainable future is achievable, and we are dedicated to helping our clients and the community make it a reality.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
21	Triton Environmental Consultants LTD	Exact match	Vancouver, BC, CanadaHQ recorded Oct 9, 2026	201-500	348 contacts →
	Exact match “Triton Environmental Consultants knows western Canada.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
22	Environmental Consulting & Technology, Inc. ECT	Exact match	Gainesville, FL, United StatesHQ recorded Oct 9, 2026	201-500	330 contacts →
	Exact match “Environmental Consulting & Technology, Inc.(ECT) is a multi-disciplinary environmental and sustainability consulting firm delivering strategy, permitting, design, and management…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
23	Kosol Energie	Exact match	Ahmedabad, IndiaHQ recorded Oct 9, 2026	501-1,000	324 contacts →
	Exact match “At KOSOL Energie, a core team of experienced engineers and trained professionals collaborate seamlessly to generate innovative solutions aimed at replacing fossil fuels with…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
24	ETP CC	Exact match	AustraliaHQ recorded Oct 9, 2026	n/a	324 contacts →
	Exact match “Management Consulting in the Energy Sector” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
25	EIC Partnership	Exact match	Redditch, United KingdomHQ recorded Oct 9, 2026	51-200	310 contacts →
	Exact match “EIC Partnership: A Legacy of Expertise, A Commitment to Sustainability With origins dating back to 1975, EIC has cultivated nearly 50 years of distinguished service in energy and…” Recorded in the RevenueBase company graph · Oct 9, 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 policy 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 11,870 clean energy policy advisors worldwide

See the full list, filter by size, metro and specialty, and access 30,988 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Clean energy policy advisors worldwide at a glance

As of Oct 9, 2026

30.1%Verified-email coverage

8.7Average contacts per company

1-10Median size (employees)

1.5%Largest-city concentration · London

Oct 9, 2026Page data refreshed

Companies by employee count

1-10

7,826

11-50

3,201

51-200

624

201-500

113

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 policy advisors are linked below.
What qualifies: Company records worldwide whose business descriptions match “clean energy policy 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 30,988 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 October 9, 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 policy advisors by location

70 lists · largest first

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

How many clean energy policy advisors are there worldwide?

RevenueBase identified 11,870 company matches for clean energy policy advisors worldwide as of October 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?

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

Which country has the most clean energy policy advisors?

The United States leads with 1,391 companies, followed by Germany (715) and Brazil (661). Every clean energy policy advisors list by country and city is linked on this page.

Which city has the most clean energy policy advisors?

London leads with 180 company records, followed by Madrid (113) and Paris (107).

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 30,988 professional contacts with verified work emails tracked across these 11,870 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 October 9, 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.