Company lists · Data verified August 2026

Top 25 Energy consulting firms based in France

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 1,672 companies tracked

There are 1,672 energy consulting firms headquartered in France (RevenueBase, August 2026). RevenueBase tracks 32,494 professional contacts across them, including 11,913 with verified work emails and 591 with mobile numbers. Paris is the largest hub.

This list covers energy consulting firms headquartered in France, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

1,672Companies

32,494Contacts tracked

11,913Verified emails

591Mobile numbers

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The 25 largest energy consulting firms based in France

Ranked by team size

Top 25 of 1,672 energy consulting firms based in France, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Dalkia	Saint-Andre-Lez-Lille	10001+	8,459	4,167
2	Ortec Group	Aix-En-Provence	10001+	3,413	24
3	Groupe Acceo BET Energie, Ascenseur, Environnement, AMO & MOE Spécialisées	La Ciotat	501-1,000	484	373
4	Veolia Industries Global Solutions	Aubervilliers	1,001-5,000	469	181
5	Groupe Coriance	Noisy-Le-Grand	501-1,000	457	277
6	Greenflex	Paris	501-1,000	400	211
7	Sofren Group	Marseille	501-1,000	333	176
8	Hager France	Obernai	501-1,000	313	135
9	Manergy	Creteil	501-1,000	311	207
10	AGH Consulting	Paris	201-500	273	101
11	Beicip-Franlab	Rueil-Malmaison	51-200	212	99
12	Carbone 4	Paris	51-200	208	120
13	Alliance DES Énergies	Paris	51-200	161	92
14	R3	Paris	51-200	159	118
15	accenta.ai	Boulogne-Billancourt	51-200	151	100
16	Idex Ile-De-France	Rueil-Malmaison	1,001-5,000	150	77
17	Yélé Consulting	Le Carillon	51-200	142	90
18	Groupe Betem	n/a	201-500	140	86
19	Teksial	Colombes	201-500	122	14
20	OTIMO	Boulogne-Billancourt	51-200	109	42
21	Energies France	Gennevilliers	51-200	105	60
22	CDC Conseil	Lille	51-200	98	51
23	Enerlis	Boulogne-Billancourt	51-200	89	48
24	ECO Environnement	n/a	51-200	84	30
25	GAZ Europeen, Groupe Butagaz	Levallois-Perret	51-200	82	52

Showing 25 of 1,672 energy consulting firms based in France

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Energy consulting firms based in France at a glance

As of Aug 28, 2026

1-10Median size (employees)

ParisLargest hub · 247 HQs

591Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

1,093

11-50

409

51-200

115

201-500

501-1,000

1,001-5,000

10001+

Energy consulting firms by metro

Metro	Companies
Energy consulting firms in Paris	247
Energy consulting firms in Lyon	73
Energy consulting firms in Toulouse	41
Energy consulting firms in Montpellier	24
Energy consulting firms in Marseille	20
Energy consulting firms in Lille	17
Energy consulting firms in Nantes	17

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “energy consulting firms”, with match quality audited by blind human judging, and headquartered in France.
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: Contact records re-verify on a rolling cadence; 0 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many energy consulting firms are there based in France?

There are 1,672 energy consulting firms headquartered in France as of August 2026 (RevenueBase).

What is the largest company on this list?

Dalkia, headquartered in Saint-Andre-Lez-Lille, tops this list with the largest team on record.

Which city has the most energy consulting firms?

Paris leads with 247 headquartered companies, followed by Lyon (73) and Toulouse (41).

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 11,913 verified decision-maker contacts tracked across these 1,672 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.