Company lists · Data refreshed September 2026

Top 25 Energy engineering consulting companies based in Paris, France

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

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 268 companies tracked

RevenueBase identified 268 energy engineering consulting companies headquartered in Paris, France as of September 2026 and tracks 3,746 professional contacts across them, including 1,584 with verified work emails. Paris is the largest hub.

This list covers energy engineering consulting companies 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 16, 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 16, 2026 86% judged on-target in blind review

268Companies

3,746Contacts tracked

1,584Verified emails

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The 25 largest energy engineering consulting companies based in Paris, France

Ranked by team size

Top 25 of 268 energy engineering consulting companies based in Paris, France, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to energy engineering consulting companies: 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 16, 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 16, 2026
2	Doris Group	Strong evidence	Paris, FranceHQ checked Sep 16, 2026	501-1,000	365 contacts →
	Strong evidence “DORIS is a leader in the provision of engineering, advisory, and project management services to the energy industry.” Source: RevenueBase Database · checked Sep 16, 2026
3	Aventa	Partial evidence	Paris, FranceHQ checked Sep 16, 2026	201-500	176 contacts →
	Partial evidence “Aventa empowers the Marine Energy market with the sharpest skills to help design a bluer future.” Source: RevenueBase Database · checked Sep 16, 2026
4	Setec Énergie Environnement	Partial evidence	Paris, FranceHQ checked Sep 16, 2026	51-200	143 contacts →
	Partial evidence “Setec énergie environnement is a subsidiary of the setec group, one of France’s leading engineering firms (3 300 employees).” Source: RevenueBase Database · checked Sep 16, 2026
5	Sénova	Indirect evidence	Paris, FranceHQ checked Sep 16, 2026	51-200	139 contacts →
	Indirect evidence “Sénova est "le partenaire de la rénovation énergétique de votre habitat".” Source: RevenueBase Database · checked Sep 16, 2026
6	Oneside	Indirect evidence	Paris, FranceHQ checked Sep 16, 2026	51-200	107 contacts →
	Indirect evidence “Société de conseil en ingénierie, nous proposons notre expertise dans 3 domaines - Énergies & Industrie - Infrastructures Ferroviaires - Génie civil & Bâtiment.” Source: RevenueBase Database · checked Sep 16, 2026
7	BTP Ingénierie	Indirect evidence	Paris, FranceHQ checked Sep 16, 2026	11-50	92 contacts →
	Indirect evidence “Société à taille humaine, BTP Ingénierie est un bureau d’étude spécialisé dans le domaine du calcul de structures et du diagnostic des structures existantes.” Source: RevenueBase Database · checked Sep 16, 2026
8	ROZO	Indirect evidence	Paris, FranceHQ checked Sep 16, 2026	51-200	89 contacts →
	Indirect evidence “ROZO - Votre partenaire pour une décarbonation réussie!” Source: RevenueBase Database · checked Sep 16, 2026
9	Oasiis	Indirect evidence	Paris, FranceHQ checked Sep 16, 2026	11-50	87 contacts →
	Indirect evidence “QUI SOMMES NOUS?” Source: RevenueBase Database · checked Sep 16, 2026
10	Erese Groupe Scet HTC	Indirect evidence	Paris, FranceHQ checked Sep 16, 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 16, 2026
11	Igrec Ingenierie	Indirect evidence	Paris, FranceHQ checked Sep 16, 2026	51-200	61 contacts →
	Indirect evidence “Fondée en 1958, IGREC INGENIERIE, assure des missions d’ingénierie générale et de conseil dans les domaines les plus variés du bâtiment, de l’industrie, des infrastructures, des…” Source: RevenueBase Database · checked Sep 16, 2026
12	Alternet	Indirect evidence	Paris, FranceHQ checked Sep 16, 2026	11-50	61 contacts →
	Indirect evidence “Créée en 1992, ALTERNET dont les bureaux sont situés à Paris (Siège) et à Bordeaux, est une société d’ingénierie indépendante spécialisée dans les domaines techniques du bâtiment…” Source: RevenueBase Database · checked Sep 16, 2026
13	Insiema	Indirect evidence	Paris, FranceHQ checked Sep 16, 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 16, 2026
14	Groupe Herve S.A	Indirect evidence	Paris, FranceHQ checked Sep 16, 2026	1,001-5,000	57 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
15	ACE Energie	Indirect evidence	Paris, FranceHQ checked Sep 16, 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 16, 2026
16	Groupe Optim	Indirect evidence	Paris, FranceHQ checked Sep 16, 2026	51-200	56 contacts →
	Indirect evidence “SMART WORKPLACE SOLUTIONS L’équipe Optim, Expérimentée et Performante.” Source: RevenueBase Database · checked Sep 16, 2026
17	Alter Watt	Indirect evidence	Paris, FranceHQ checked Sep 16, 2026	11-50	56 contacts →
	Indirect 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 16, 2026
18	OXIAM	Indirect evidence	Paris, FranceHQ checked Sep 16, 2026	51-200	54 contacts →
	Indirect evidence “Oxiam est une société de conseil en ingénierie qui intervient à travers 3 grands domaines d’expertise - L’énergie & l'environnement - La mobilité : le transport ferroviaire et…” Source: RevenueBase Database · checked Sep 16, 2026
19	AKTEO	Indirect evidence	Paris, FranceHQ checked Sep 16, 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 16, 2026
20	Deerns France	Strong evidence	Paris, FranceHQ checked Sep 16, 2026	501-1,000	39 contacts →
	Strong evidence “Deerns is an international, independent consulting and engineering firm specialized in MEP design, in energy strategies and sustainable performance of buildings, in health and…” Source: RevenueBase Database · checked Sep 16, 2026
21	Clean Horizon	Partial evidence	Paris, FranceHQ checked Sep 16, 2026	11-50	39 contacts →
	Partial evidence “Active worldwide since 2009, Clean Horizon is 100% dedicated to energy storage.” Source: RevenueBase Database · checked Sep 16, 2026
22	Afixen	Indirect evidence	Paris, FranceHQ checked Sep 16, 2026	51-200	37 contacts →
	Indirect evidence “Afixen est un cabinet de conseil en ingénierie qui accompagne les entreprises dans leurs défis technologiques et industriels, tous secteurs confondus.” Source: RevenueBase Database · checked Sep 16, 2026
23	Avesig	Indirect evidence	Paris, FranceHQ checked Sep 16, 2026	11-50	37 contacts →
	Indirect evidence “AVESIG est un Bureau d’études d’assistance technique et de conseils en Ingénierie Nous rendons simple et abordable ce qui paraît complexe et compliqué.” Source: RevenueBase Database · checked Sep 16, 2026
24	Iboco France	Indirect evidence	Paris, FranceHQ checked Sep 16, 2026	501-1,000	36 contacts →
	Indirect evidence “Iboco, spécialiste en cheminement de l’énergie, est un acteur incontournable sur les segments du Résidentiel, du Tertiaire, de l’Industrie et de l’Infrastructure.” Source: RevenueBase Database · checked Sep 16, 2026
25	Omnegy By Epsa	Indirect evidence	Paris, FranceHQ checked Sep 16, 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 16, 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 engineering consulting companies. 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 engineering consulting companies.
Partial evidence: Its own public description names part of energy engineering consulting companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name energy engineering consulting companies. 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 268 energy engineering consulting companies based in Paris, France

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Energy engineering consulting companies based in Paris, France at a glance

As of Sep 16, 2026

42.3%Verified-email coverage

14.0Average contacts per company

1-10Median size (employees)

100.0%Largest-city concentration · Paris

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

168

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 268 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 engineering consulting companies, 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 engineering consulting companies”. 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 engineering consulting companies), 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 engineering consulting companies, 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, 1,584 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 16, 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 engineering consulting companies by metro in France

Energy engineering consulting companies in Paris268
Energy engineering consulting companies in Lyon95
Energy engineering consulting companies in Toulouse46
Energy engineering consulting companies in Marseille27
Energy engineering consulting companies in Montpellier25
Energy engineering consulting companies in Nantes25

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 engineering consulting companies, 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 engineering consulting companies are there based in Paris, France?

RevenueBase identified 268 energy engineering consulting companies 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 engineering consulting companies?

Paris leads with 268 headquartered companies, followed by Lyon (95) and Toulouse (46).

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 1,584 verified decision-maker contacts tracked across these 268 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 16, 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.