Company lists · Data refreshed September 2026

Top 25 Gas consulting firms based in France

Name: Gas consulting firms based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 89 companies tracked

RevenueBase identified 89 gas consulting firms headquartered in France as of September 2026 and tracks 5,959 professional contacts across them, including 797 with verified work emails. Paris is the largest hub.

This list covers gas consulting firms headquartered in 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

89Companies

5,959Contacts tracked

797Verified emails

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The 25 largest gas consulting firms based in France

Ranked by team size

Top 25 of 89 gas consulting firms based in France, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to gas 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	Ortec Group	Indirect evidence	Aix-en-provence, FranceHQ checked Sep 21, 2026	10001+	3,436 contacts →
	Indirect evidence “En conjuguant depuis sa création audace et rigueur, le groupe Ortec est devenu aujourd’hui un des leaders des services à l’industrie, l’énergie et l’environnement.” Source: RevenueBase Database · checked Sep 21, 2026
2	Prime Engineering France	Indirect evidence	Boulogne Billancourt, FranceHQ checked Sep 21, 2026	501-1,000	581 contacts →
	Indirect evidence “PRIME Engineering est l’un des acteurs incontournables du conseil en ingénierie.” Source: RevenueBase Database · checked Sep 21, 2026
3	Atlantic Ingénierie	Indirect evidence	Saint-herblain, FranceHQ checked Sep 21, 2026	201-500	341 contacts →
	Indirect evidence “Atlantic Ingénierie, l’énergie d’avancer ensemble Chez Atlantic Ingénierie, nous avons une conviction : les projets d’énergie et d’industrie avancent mieux quand on allie…” Source: RevenueBase Database · checked Sep 21, 2026
4	CVA Group	Indirect evidence	Bayonne, FranceHQ checked Sep 21, 2026	201-500	214 contacts →
	Indirect evidence “We believe that there is a human and technical value chain through the entire energy workflow.” Source: RevenueBase Database · checked Sep 21, 2026
5	Beicip-Franlab	Indirect evidence	Rueil-malmaison, FranceHQ checked Sep 21, 2026	51-200	212 contacts →
	Indirect evidence “Beicip-Franlab is a leading Energy Consultancy and Software Editor created in the 1960's with recognized worldwide hands-on expertise.” Source: RevenueBase Database · checked Sep 21, 2026
6	Sofregaz SAS	Indirect evidence	Puteaux, FranceHQ checked Sep 21, 2026	51-200	122 contacts →
	Indirect evidence “SOFREGAZ is a leading independent engineering company, created in 1959 by Gaz de France, with over 1300 projects across 95 countries.” Source: RevenueBase Database · checked Sep 21, 2026
7	Groupe Inatis	Indirect evidence	Villeneuve-d’ascq, FranceHQ checked Sep 21, 2026	51-200	69 contacts →
	Indirect evidence “Postuler à nos offres d'emploi : Envoyer votre CV : Le Groupe Inatis, Ingénierie et Conseil en technologies, est spécialisé dans l’assistance technique aux grands donneurs…” Source: RevenueBase Database · checked Sep 21, 2026
8	Akajoule	Indirect evidence	Saint Nazaire, FranceHQ checked Sep 21, 2026	11-50	54 contacts →
	Indirect evidence “AKAJOULE est un bureau d’étude spécialisé dans l’accompagnement et l’ingénierie en énergie et environnement.” Source: RevenueBase Database · checked Sep 21, 2026
9	PLCB	Partial evidence	Pau, FranceHQ checked Sep 21, 2026	51-200	54 contacts →
	Partial evidence “PLCB Engineering est une société d'Ingénierie et de conseil spécialisée dans les industries Oil & Gas, Chimie & Pétrochimie, Projet Minier, Nucléaire et Énergies renouvelables…” Source: RevenueBase Database · checked Sep 21, 2026
10	AIR Flow	Partial evidence	Aix-en-provence, FranceHQ checked Sep 21, 2026	51-200	47 contacts →
	Partial evidence “Created in 2004 in France, Air Flow group is specialized in gas logistics, engineering and gas applications.” Source: RevenueBase Database · checked Sep 21, 2026
11	DE Viris	Indirect evidence	Aix-en-provence, FranceHQ checked Sep 21, 2026	51-200	31 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
12	CAP Terre Betom Group	Indirect evidence	Vélizy-villacoublay, FranceHQ checked Sep 21, 2026	11-50	29 contacts →
	Indirect evidence “Bureau d'études et de conseil en Environnement, Durabilité et Energie” Source: RevenueBase Database · checked Sep 21, 2026
13	Cpgf Horizon & Formation	Indirect evidence	Avon, FranceHQ checked Sep 21, 2026	11-50	22 contacts →
	Indirect evidence “CPGF HORIZON est un bureau d’ingénierie spécialisé en geo-sciences.” Source: RevenueBase Database · checked Sep 21, 2026
14	Cler Ingénierie	Indirect evidence	Saint Priest, FranceHQ checked Sep 21, 2026	11-50	18 contacts →
	Indirect evidence “Cler ingénierie est un bureau d’études au service des maîtres d’ouvrages publics et privés concernés par les problématiques de l’énergie.” Source: RevenueBase Database · checked Sep 21, 2026
15	Axe-Ing	Indirect evidence	Le Pecq, FranceHQ checked Sep 21, 2026	1-10	16 contacts →
	Indirect evidence “axe ingénierie vous accompagne à chaque étape de vos projets, de la définition des besoins à la réception finale.” Source: RevenueBase Database · checked Sep 21, 2026
16	Inter360 Group	Partial evidence	Asnières-sur-seine, FranceHQ checked Sep 21, 2026	201-500	16 contacts →
	Partial evidence “Inter360 is a group of technical consulting companies dedicated to the energy industries such as conventional & unconventional O&G, rrenewable and nuclear energies.” Source: RevenueBase Database · checked Sep 21, 2026
17	Sergaz	Indirect evidence	Boulogne Billancourt, FranceHQ checked Sep 21, 2026	11-50	16 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
18	E-Conex	Indirect evidence	Serris, FranceHQ checked Sep 21, 2026	11-50	13 contacts →
	Indirect evidence “E-CONEX est un bureau d’études et de conseils spécialisé dans les domaines de la Sûreté/Sécurité, des Technologies de l’Information et de l’Énergie.” Source: RevenueBase Database · checked Sep 21, 2026
19	Laboratoire Quad-Lab	Indirect evidence	Lisses, FranceHQ checked Sep 21, 2026	11-50	11 contacts →
	Indirect evidence “Nous vous aidons à mesurer, vérifier et sécuriser la qualité de votre air et de vos gaz.” Source: RevenueBase Database · checked Sep 21, 2026
20	Aureka Group	Partial evidence	Versailles, FranceHQ checked Sep 21, 2026	1-10	11 contacts →
	Partial evidence “AUREKA GROUP is an Engineering Consulting company specialized in energy sector.” Source: RevenueBase Database · checked Sep 21, 2026
21	Ateneos Conseil	Indirect evidence	Paris, FranceHQ checked Sep 21, 2026	11-50	10 contacts →
	Indirect evidence “CONSTRUISONS AUTREMENT LE CONSEIL EN INGENIERIE ATENEOS CONSEIL est née en 2021 d'une conviction simple : la réussite des grands projets d'ingénierie repose avant tout sur les…” Source: RevenueBase Database · checked Sep 21, 2026
22	Bureau D'etudes Audrerie	Indirect evidence	Tulle, FranceHQ checked Sep 21, 2026	11-50	9 contacts →
	Indirect evidence “Le bureau d'études AUDRERIE travaille auprès des collectivités et des concessionnaires des réseaux secs pour leur fournir des études liées à la construction d'infrastructures de…” Source: RevenueBase Database · checked Sep 21, 2026
23	Eneriom Advisory	Indirect evidence	Paris, FranceHQ checked Sep 21, 2026	1-10	7 contacts →
	Indirect evidence “We help companies develop unique financing solutions for their projects in the natural resources, energy, and related infrastructure sectors.” Source: RevenueBase Database · checked Sep 21, 2026
24	Cl2r Industrial Solutions	Indirect evidence	Palaiseau, FranceHQ checked Sep 21, 2026	1-10	7 contacts →
	Indirect evidence “CL2R Industrial solutions est une société spécialisée dans le conseil et les services pour l'industrie, l’énergie et l’environnement.” Source: RevenueBase Database · checked Sep 21, 2026
25	2b1st Consulting	Partial evidence	Chamonix Mont-blanc, FranceHQ checked Sep 21, 2026	1-10	6 contacts →
	Partial evidence “Since 2012, 2B1st Consulting is the ENERGY KNOWLEDGE CENTER for all the players of the industry.” 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: gas 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 gas consulting firms.
Partial evidence: Its own public description names part of gas consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name gas 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 89 gas consulting firms based in France

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Gas consulting firms based in France at a glance

As of Sep 21, 2026

13.4%Verified-email coverage

67.0Average contacts per company

1-10Median size (employees)

14.6%Largest-city concentration · Paris

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

10001+

Email recency for this list is measured worldwide rather than for France, so it is reported there. Company counts and contact totals on this page are exact for France, over 89 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 gas 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 France whose own description of what they do matches “gas 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 gas 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 gas consulting firms, and records with no verified work email. Companies headquartered outside France 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, 797 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.

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 gas 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 gas consulting firms are there based in France?

RevenueBase identified 89 gas consulting firms headquartered in 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?

Ortec Group, headquartered in Aix-En-Provence, tops this list with the largest team on record.

Which city has the most gas consulting firms?

Paris leads with 13 headquartered companies, followed by Lyon (5) and Aix-En-Provence (3).

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 797 verified decision-maker contacts tracked across these 89 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.