Company lists · Data refreshed September 2026

Top 25 Energy transition consulting firms based in Paris, France

Name: Energy transition consulting firms based in Paris, France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 269 companies tracked

RevenueBase identified 269 energy transition consulting firms headquartered in Paris, France as of September 2026 and tracks 3,664 professional contacts across them, including 1,691 with verified work emails. Paris is the largest hub.

This list covers energy transition consulting firms headquartered in Paris, France, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 21, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review

269Companies

3,664Contacts tracked

1,691Verified emails

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The 25 largest energy transition consulting firms based in Paris, France

Ranked by team size

Top 25 of 269 energy transition consulting firms based in Paris, France, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to energy transition consulting firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Greenflex	Partial evidence	Paris, FranceHQ checked Sep 21, 2026	501-1,000	390 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 21, 2026
2	Doris Group	Partial evidence	Paris, FranceHQ checked Sep 21, 2026	501-1,000	365 contacts →
	Partial evidence “DORIS is a leader in the provision of engineering, advisory, and project management services to the energy industry.” Source: RevenueBase Database · checked Sep 21, 2026
3	Mews Partners	Partial evidence	Paris, FranceHQ checked Sep 21, 2026	201-500	294 contacts →
	Partial evidence “Mews Partners is an independent consulting firm, founded in 1992, with offices in France and Germany.” Source: RevenueBase Database · checked Sep 21, 2026
4	Carbone 4	Strong evidence	Paris, FranceHQ checked Sep 21, 2026	51-200	208 contacts →
	Strong evidence “Founded by Alain Grandjean and Jean-Marc Jancovici, Carbone 4 is a leading independent consulting firm, specialized in energy transition, that offers its expertise to private or…” Source: RevenueBase Database · checked Sep 21, 2026
5	R3	Partial evidence	Paris, FranceHQ checked Sep 21, 2026	51-200	155 contacts →
	Partial evidence “Expert de la réconciliation entre économie et écologie, R3 fait basculer les entreprises vers une transition environnementale et sociétale réellement performante.” Source: RevenueBase Database · checked Sep 21, 2026
6	Finergreen	Strong evidence	Paris, FranceHQ checked Sep 21, 2026	51-200	105 contacts →
	Strong evidence “Finergreen is a boutique investment bank dedicated to the energy and environmental transition with in-depth expertise in M&A and complex financing.” Source: RevenueBase Database · checked Sep 21, 2026
7	ROZO	Indirect evidence	Paris, FranceHQ checked Sep 21, 2026	51-200	89 contacts →
	Indirect evidence “ROZO - Votre partenaire pour une décarbonation réussie!” Source: RevenueBase Database · checked Sep 21, 2026
8	IMT Partners	Partial evidence	Paris, FranceHQ checked Sep 21, 2026	11-50	85 contacts →
	Partial evidence “IMT Partners est un cabinet spécialisé dans le management de transition qui repose sur l’expertise de ses 50 collaborateurs.” Source: RevenueBase Database · checked Sep 21, 2026
9	Métiga	Partial evidence	Paris, FranceHQ checked Sep 21, 2026	51-200	81 contacts →
	Partial evidence “MÉTIGA est une entreprise à mission, engagée en faveur de la transition énergétique, environnementale et sociétale.” Source: RevenueBase Database · checked Sep 21, 2026
10	Erese Groupe Scet HTC	Indirect evidence	Paris, FranceHQ checked Sep 21, 2026	51-200	62 contacts →
	Indirect evidence “ERESE \| Groupe SCET HTC est un bureau d’études spécialisé dans les énergies, les réseaux et l’environnement.” Source: RevenueBase Database · checked Sep 21, 2026
11	Insiema	Indirect evidence	Paris, FranceHQ checked Sep 21, 2026	201-500	60 contacts →
	Indirect evidence “INSIEMA is an information services company based out of 70 BOULEVARD DE COURCELLES, PARIS, France.” Source: RevenueBase Database · checked Sep 21, 2026
12	Groupe Herve S.A	Indirect evidence	Paris, FranceHQ checked Sep 21, 2026	1,001-5,000	57 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
13	ACE Energie	Indirect evidence	Paris, FranceHQ checked Sep 21, 2026	11-50	56 contacts →
	Indirect evidence “ACE Énergie est une société de services en d'efficacité énergétique qui propose 3 offres :=> Offre de financement de projet : Nous participons au financement de projets…” Source: RevenueBase Database · checked Sep 21, 2026
14	Alter Watt	Partial evidence	Paris, FranceHQ checked Sep 21, 2026	11-50	56 contacts →
	Partial evidence “Alter Watt est un bureau d’études énergétiques, né de la conviction que la transition écologique est un enjeu majeur des années à venir.” Source: RevenueBase Database · checked Sep 21, 2026
15	E-Cube Strategy Consultants	Strong evidence	Paris, FranceHQ checked Sep 21, 2026	11-50	43 contacts →
	Strong evidence “E-CUBE, the strategy consulting firm dedicated to energy, transport and climate stakes We combine innovative strategic thinking with deep industry expertise to deliver outstanding…” Source: RevenueBase Database · checked Sep 21, 2026
16	AKTEO	Indirect evidence	Paris, FranceHQ checked Sep 21, 2026	11-50	40 contacts →
	Indirect evidence “AKTEO est la société de conseil, d’ingénierie et de formation en décarbonation.” Source: RevenueBase Database · checked Sep 21, 2026
17	NAMR	Indirect evidence	Paris, FranceHQ checked Sep 21, 2026	11-50	40 contacts →
	Indirect evidence “Notre mission Permettre la transformation énergétique et l’adaptation climatique des territoires, des actifs et des systèmes énergétiques en France et à l’international grâce à…” Source: RevenueBase Database · checked Sep 21, 2026
18	Clean Horizon	Partial evidence	Paris, FranceHQ checked Sep 21, 2026	11-50	39 contacts →
	Partial evidence “Active worldwide since 2009, Clean Horizon is 100% dedicated to energy storage.” Source: RevenueBase Database · checked Sep 21, 2026
19	CGR Avocats	Partial evidence	Paris, FranceHQ checked Sep 21, 2026	11-50	36 contacts →
	Partial evidence “Dans une économie confrontée aux défis environnementaux et sociaux, CGR Avocats se positionne en leader des grandes transitions, qu’elles soient énergétique, industrielle ou…” Source: RevenueBase Database · checked Sep 21, 2026
20	Omnegy By Epsa	Indirect evidence	Paris, FranceHQ checked Sep 21, 2026	11-50	34 contacts →
	Indirect evidence “OMNEGY est un cabinet de conseil en énergie pour les entreprises, spécialiste des achats et des contrats d'énergie.” Source: RevenueBase Database · checked Sep 21, 2026
21	Wild Trees	Indirect evidence	Paris, FranceHQ checked Sep 21, 2026	11-50	27 contacts →
	Indirect evidence “WILD TREES est une société de conseil indépendante, spécialiste des enjeux écologiques, énergétiques et climatiques.” Source: RevenueBase Database · checked Sep 21, 2026
22	BOREA	Partial evidence	Paris, FranceHQ checked Sep 21, 2026	11-50	25 contacts →
	Partial evidence “Chez borea, nous connectons les talents et les entreprises de la transition énergétique : solaire, éolien, biométhane, hydrogène, gaz renouvelables, efficacité énergétique, bois &…” Source: RevenueBase Database · checked Sep 21, 2026
23	Atlante	Indirect evidence	Paris, FranceHQ checked Sep 21, 2026	11-50	22 contacts →
	Indirect evidence “Atlante & Cie est un cabinet de conseil en stratégie opérationnelle dédié aux enjeux énergétiques.” Source: RevenueBase Database · checked Sep 21, 2026
24	Isolidarite	Partial evidence	Paris, FranceHQ checked Sep 21, 2026	11-50	22 contacts →
	Partial evidence “Le Groupe Isolidarité a vu le jour en 2017, il a développé une activité de conseils et de solutions pour une Transition Énergétique réussie pour les Particuliers, mais aussi pour…” Source: RevenueBase Database · checked Sep 21, 2026
25	Sirenergies	Indirect evidence	Paris, FranceHQ checked Sep 21, 2026	11-50	21 contacts →
	Indirect evidence “Crée en 2021 par Emmanuel Sire et Raphaël Barbate, Sirenergies s’appuie sur les deux expertises de ses fondateurs : le sourcing d’énergies et la technologie numérique.” Source: RevenueBase Database · checked Sep 21, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: energy transition consulting firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names energy transition consulting firms.
Partial evidence: Its own public description names part of energy transition consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name energy transition consulting firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 269 energy transition consulting firms based in Paris, France

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Energy transition consulting firms based in Paris, France at a glance

As of Sep 21, 2026

46.2%Verified-email coverage

13.6Average contacts per company

1-10Median size (employees)

100.0%Largest-city concentration · Paris

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

166

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured across the whole France list rather than for Paris, so it is reported there. Company counts and contact totals on this page are exact for Paris, over 269 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among energy transition consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Paris, France whose own description of what they do matches “energy transition consulting firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names energy transition consulting firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among energy transition consulting firms, and records with no verified work email. Companies headquartered outside Paris are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 1,691 across the full list. 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 21, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Energy transition consulting firms by metro in France

Energy transition consulting firms in Paris269
Energy transition consulting firms in Lyon73
Energy transition consulting firms in Toulouse37

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names energy transition consulting firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many energy transition consulting firms are there based in Paris, France?

RevenueBase identified 269 energy transition consulting firms headquartered in Paris, France as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Greenflex, headquartered in Paris, tops this list with the largest team on record.

Which city has the most energy transition consulting firms?

Paris leads with 269 headquartered companies, followed by Lyon (73) and Toulouse (37).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,691 verified decision-maker contacts tracked across these 269 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 21, 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 Smart Search, 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.