Company lists · Data refreshed September 2026

Top 25 Geothermal consultants based in France

Name: Geothermal consultants based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 1,636 companies tracked

RevenueBase identified 1,636 geothermal consultants headquartered in France as of September 2026 and tracks 16,285 professional contacts across them, including 5,777 with verified work emails. Paris is the largest hub.

This list covers geothermal consultants 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 20, 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 20, 2026 86% judged on-target in blind review

1,636Companies

16,285Contacts tracked

5,777Verified emails

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The 25 largest geothermal consultants based in France

Ranked by team size

Top 25 of 1,636 geothermal consultants based in France, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to geothermal consultants: 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	BTP Consultants	Partial evidence	Montigny-le-bretonneux, FranceHQ checked Sep 20, 2026	201-500	1,066 contacts →
	Partial evidence “BTP Consultants est un bureau de ̂, et présent à l'échelle nationale depuis plus de.” Source: RevenueBase Database · checked Sep 20, 2026
2	Groupe Acceo BET Energie, Ascenseur, Environnement, AMO & MOE Spécialisées	Indirect evidence	La Ciotat, FranceHQ checked Sep 20, 2026	501-1,000	488 contacts →
	Indirect evidence “ACCEO est un bureau d’études en bâtiment indépendant fondé en 2003 et spécialisé dans des domaines à forte technicité : Ascenseurs, Efficacité énergétique, Environnement, AMO et…” Source: RevenueBase Database · checked Sep 20, 2026
3	Groupe Coriance	Indirect evidence	Noisy-le-grand, FranceHQ checked Sep 20, 2026	501-1,000	452 contacts →
	Indirect evidence “Pour une énergie propre et mieux utilisée Notre mission : fournir des solutions énergétiques performantes et économiques, tout en minimisant l'impact environnemental.” Source: RevenueBase Database · checked Sep 20, 2026
4	Groupe Géotec	Indirect evidence	Quetigny, FranceHQ checked Sep 20, 2026	501-1,000	441 contacts →
	Indirect evidence “Groupe Géotec, bureau d’études en ingénierie géotechnique et environnementale, créé en 1973, conseille l’ensemble des interlocuteurs de l’acte de construire : maîtres d’ouvrage…” Source: RevenueBase Database · checked Sep 20, 2026
5	Neo2	Partial evidence	Levallois-perret, FranceHQ checked Sep 20, 2026	501-1,000	390 contacts →
	Partial evidence “NEO2 is an Engineering Consultancy and Resource Provider active in the Oil & Gas, Water Treatment & Desalination, and Power Generation industries.” Source: RevenueBase Database · checked Sep 20, 2026
6	Beicip-Franlab	Partial evidence	Rueil-malmaison, FranceHQ checked Sep 20, 2026	51-200	212 contacts →
	Partial 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 20, 2026
7	Ep2c	Indirect evidence	Balma, FranceHQ checked Sep 20, 2026	501-1,000	211 contacts →
	Indirect evidence “EP2C recruits talents looking for an international career.” Source: RevenueBase Database · checked Sep 20, 2026
8	Aventa	Indirect evidence	Paris, FranceHQ checked Sep 20, 2026	201-500	176 contacts →
	Indirect evidence “Aventa empowers the Marine Energy market with the sharpest skills to help design a bluer future.” Source: RevenueBase Database · checked Sep 20, 2026
9	Agtherm	Indirect evidence	Colomiers, FranceHQ checked Sep 20, 2026	51-200	159 contacts →
	Indirect evidence “Agtherm est une PME indépendante dont l'activité dans le domaine du génie climatique et de la performance énergétique, vous assure la sécurité et la qualité de ses interventions…” Source: RevenueBase Database · checked Sep 20, 2026
10	Setec Énergie Environnement	Indirect evidence	Paris, FranceHQ checked Sep 20, 2026	51-200	143 contacts →
	Indirect 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 20, 2026
11	Sénova	Indirect evidence	Paris, FranceHQ checked Sep 20, 2026	51-200	139 contacts →
	Indirect evidence “Sénova est "le partenaire de la rénovation énergétique de votre habitat".” Source: RevenueBase Database · checked Sep 20, 2026
12	M-Energies	Indirect evidence	Ludres Cedex, FranceHQ checked Sep 20, 2026	501-1,000	134 contacts →
	Indirect evidence “Groupe multirégional indépendant dédié aux activités de génie climatique : • Exploitation de chaufferies collectives toutes énergies et toutes puissances, • Maintenance de…” Source: RevenueBase Database · checked Sep 20, 2026
13	Geotechnique SAS	Indirect evidence	Avignon, FranceHQ checked Sep 20, 2026	51-200	134 contacts →
	Indirect evidence “GEOTECHNIQUE SAS - Sciences de la Terre est un bureau d'études en ingénierie géotechnique qui apporte son savoir-faire à l'ensemble des protagonistes intervenant dans un projet de…” Source: RevenueBase Database · checked Sep 20, 2026
14	Vitaclim	Indirect evidence	Montpellier, FranceHQ checked Sep 20, 2026	201-500	132 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
15	Sofregaz SAS	Indirect evidence	Puteaux, FranceHQ checked Sep 20, 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 20, 2026
16	Semofi	Indirect evidence	Villeneuve-le-roi, FranceHQ checked Sep 20, 2026	51-200	114 contacts →
	Indirect evidence “Filiale du Groupe SEMOFI, acteur majeur des filières géotechnique et SSP, SEMOFI est un bureau d’études dont la vocation est d’accompagner les collectivités territoriales…” Source: RevenueBase Database · checked Sep 20, 2026
17	CDC Conseil	Indirect evidence	Joué-lès-tours, FranceHQ checked Sep 20, 2026	51-200	98 contacts →
	Indirect evidence “CDC Conseil est une entreprise qui propose - Aux gestionnaires de patrimoines immobiliers des prestations de conseil de suivi d’exploitation, d’achat d’énergie et des solutions…” Source: RevenueBase Database · checked Sep 20, 2026
18	Ingeo Ingénierie & Géomètre-Expert	Indirect evidence	Blendecques, FranceHQ checked Sep 20, 2026	51-200	94 contacts →
	Indirect evidence “INGEO - Ingénierie - Géomètre-Expert : un cabinet de Géomètres-Experts et son Bureau d’Etudes et d’Ingénierie réunis au service de vos projets 90 collaborateurs à Saint Omer…” Source: RevenueBase Database · checked Sep 20, 2026
19	Energie & Service	Indirect evidence	Versailles, FranceHQ checked Sep 20, 2026	51-200	93 contacts →
	Indirect evidence “Avez-vous besoin d'aide pour améliorer les performances énergétiques de vos bâtiments?” Source: RevenueBase Database · checked Sep 20, 2026
20	Tecsol	Indirect evidence	Perpignan, FranceHQ checked Sep 20, 2026	11-50	89 contacts →
	Indirect evidence “Bureau d'études solaires indépendant” Source: RevenueBase Database · checked Sep 20, 2026
21	Oasiis	Indirect evidence	Paris, FranceHQ checked Sep 20, 2026	11-50	87 contacts →
	Indirect evidence “QUI SOMMES NOUS?” Source: RevenueBase Database · checked Sep 20, 2026
22	ECO Environnement	Indirect evidence	Pantin, FranceHQ checked Sep 20, 2026	51-200	84 contacts →
	Indirect evidence “Éco Environnement – Expert en transition énergétique durable Éco Environnement accompagne entreprises et collectivités dans leur passage à l’énergie verte.” Source: RevenueBase Database · checked Sep 20, 2026
23	Alto Ingénierie	Indirect evidence	Bussy-saint-martin, FranceHQ checked Sep 20, 2026	51-200	81 contacts →
	Indirect evidence “ALTO Ingénierie est un bureau d'étude Fluides et Environnement, qui intervient en MOE et AMO, mais également en Direction de Synthèse et BIM Management.” Source: RevenueBase Database · checked Sep 20, 2026
24	SOLAB	Indirect evidence	Nantes, FranceHQ checked Sep 20, 2026	51-200	74 contacts →
	Indirect evidence “Énergie & Environnement, Génie climatique et électrique, Acoustique, Coordination SSI, Restauconception et Métrologie sont les thèmes sur lesquels SOLAB et ses 6 équipes d’experts…” Source: RevenueBase Database · checked Sep 20, 2026
25	Solares Bauen France	Indirect evidence	Strasbourg, FranceHQ checked Sep 20, 2026	51-200	72 contacts →
	Indirect evidence “Solares Bauen est un bureau d’étude fluides, thermique et environnement dans le bâtiment créée en 2005 à Strasbourg.” Source: RevenueBase Database · checked Sep 20, 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: geothermal consultants. 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 geothermal consultants.
Partial evidence: Its own public description names part of geothermal consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name geothermal consultants. 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 1,636 geothermal consultants based in France

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Geothermal consultants based in France at a glance

As of Sep 20, 2026

35.5%Verified-email coverage

10.0Average contacts per company

1-10Median size (employees)

6.2%Largest-city concentration · Paris

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

1,121

11-50

410

51-200

201-500

501-1,000

1,001-5,000

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 1,636 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 geothermal consultants, 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 “geothermal consultants”. 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 geothermal consultants), 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 geothermal consultants, 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, 5,777 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 20, 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.

Geothermal consultants by metro

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 geothermal consultants, 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 geothermal consultants are there based in France?

RevenueBase identified 1,636 geothermal consultants 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?

BTP Consultants, headquartered in Montigny-Le-Bretonneux, tops this list with the largest team on record.

Which city has the most geothermal consultants?

Paris leads with 102 headquartered companies, followed by Lyon (35) and Toulouse (27).

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 5,777 verified decision-maker contacts tracked across these 1,636 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 20, 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.