Company lists · Data refreshed September 2026

Top 25 Marine energy consultants based in France

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

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 158 companies tracked

RevenueBase identified 158 marine energy consultants headquartered in France as of September 2026 and tracks 2,206 professional contacts across them, including 822 with verified work emails. Paris is the largest hub.

This list covers marine energy 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 17, 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 17, 2026 86% judged on-target in blind review

158Companies

2,206Contacts tracked

822Verified emails

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The 25 largest marine energy consultants based in France

Ranked by team size

Top 25 of 158 marine energy consultants based in France, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to marine energy 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	Doris Group	Partial evidence	Paris, FranceHQ checked Sep 17, 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 17, 2026
2	Geocean	Partial evidence	Cassis, FranceHQ checked Sep 17, 2026	n/a	216 contacts →
	Partial evidence “GEOCEAN is a marine work contractor, based near Marseille, in the south of France, with 30 years experience worldwide.” Source: RevenueBase Database · checked Sep 17, 2026
3	Aventa	Strong evidence	Paris, FranceHQ checked Sep 17, 2026	201-500	176 contacts →
	Strong evidence “Aventa empowers the Marine Energy market with the sharpest skills to help design a bluer future.” Source: RevenueBase Database · checked Sep 17, 2026
4	Setec Énergie Environnement	Indirect evidence	Paris, FranceHQ checked Sep 17, 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 17, 2026
5	Creocean	Indirect evidence	La Rochelle, FranceHQ checked Sep 17, 2026	51-200	90 contacts →
	Indirect evidence “Notre expertise au service des océans et des littoraux : Notre bureau d'études accompagne les projets sur l’ensemble du littoral français et à l’international, avec une expertise…” Source: RevenueBase Database · checked Sep 17, 2026
6	Stat Marine	Partial evidence	Nîmes, FranceHQ checked Sep 17, 2026	51-200	81 contacts →
	Partial evidence “Created in 1983, STAT MARINE is an entrepreneurial and client-focused organisation; it has won its reputation not only for its practical approach to operational and engineering…” Source: RevenueBase Database · checked Sep 17, 2026
7	Akajoule	Indirect evidence	Saint Nazaire, FranceHQ checked Sep 17, 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 17, 2026
8	Ater Environnement	Indirect evidence	Grandfresnoy, FranceHQ checked Sep 17, 2026	11-50	52 contacts →
	Indirect evidence “ATER Environnement est un bureau d’études pluridisciplinaire, composé de 52 collaborateurs aux compétences complémentaires, experts dans les domaines des énergies renouvelables…” Source: RevenueBase Database · checked Sep 17, 2026
9	Hydroconsult Sarl	Partial evidence	Kervignac, FranceHQ checked Sep 17, 2026	11-50	49 contacts →
	Partial evidence “Hydroconsult is a recognized actor in worldwide Hydrographic and Geophysical Survey's assistance and Marine Consulting, with 20 years experience.” Source: RevenueBase Database · checked Sep 17, 2026
10	Oxan Energy	Strong evidence	Paris, FranceHQ checked Sep 17, 2026	11-50	30 contacts →
	Strong evidence “Oxan Energy is a developer and operator of renewable energy projects specialized in marine energies and particularly in floating offshore wind.” Source: RevenueBase Database · checked Sep 17, 2026
11	Fondation Open-C	Strong evidence	Le Croisic, FranceHQ checked Sep 17, 2026	11-50	27 contacts →
	Strong evidence “Fondation OPEN-C coordinates, develops, and manages France’s five offshore testing sites for floating wind and Marine Renewable Energies (MRE), providing infrastructures dedicated…” Source: RevenueBase Database · checked Sep 17, 2026
12	Geps Techno	Partial evidence	Guérande, FranceHQ checked Sep 17, 2026	11-50	25 contacts →
	Partial evidence “GEPS Techno builds and operates autonomous, connected offshore platforms serving as persistent floating infrastructure for maritime monitoring & surveillance, along with other…” Source: RevenueBase Database · checked Sep 17, 2026
13	Mareal	Indirect evidence	L'haÿ-les-roses, FranceHQ checked Sep 17, 2026	11-50	25 contacts →
	Indirect evidence “Mareal: Engineering the Future of Offshore Innovation Since its inception in 2002, Mareal has established itself as a leading force in offshore engineering, spanning the entire…” Source: RevenueBase Database · checked Sep 17, 2026
14	Farwind Energy	Strong evidence	Nantes, FranceHQ checked Sep 17, 2026	11-50	23 contacts →
	Strong evidence “FARWIND ENERGY is a spin-off of Centrale Nantes, one of the world leading university for marine renewable energy research.” Source: RevenueBase Database · checked Sep 17, 2026
15	TBM Environnement	Indirect evidence	Auray, FranceHQ checked Sep 17, 2026	11-50	22 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
16	Natural Power France	Indirect evidence	Nantes, FranceHQ checked Sep 17, 2026	201-500	19 contacts →
	Indirect evidence “Natural Power, fort d’une expertise unique de plus de 20 ans en gestion de projet, est un prestataire indépendant de conseils et services pour la valorisation des énergies…” Source: RevenueBase Database · checked Sep 17, 2026
17	Seaneo	Partial evidence	Mont De Marsan, FranceHQ checked Sep 17, 2026	11-50	19 contacts →
	Partial evidence “Depuis 2006, SEANEO est une société de conseil et de services en environnement littoral et marin, en aquaculture et pêche (gestion des zones côtières, Aires Marines Protégées…” Source: RevenueBase Database · checked Sep 17, 2026
18	Seaturns	Partial evidence	Bordeaux, FranceHQ checked Sep 17, 2026	1-10	19 contacts →
	Partial evidence “Founded in Bordeaux, France, in 2015, SEATURNS has developed an innovative, and cost-effective wave energy solution to meet the urgent global demand for sustainable and renewable…” Source: RevenueBase Database · checked Sep 17, 2026
19	ÉEPOS	Indirect evidence	Chambéry, FranceHQ checked Sep 17, 2026	11-50	14 contacts →
	Indirect evidence “Agir pour limiter le changement climatique et plus globalement l'impact environnemental des activités humaines est une nécessité de court terme, qui doit mobiliser l'ensemble des…” Source: RevenueBase Database · checked Sep 17, 2026
20	Idra BIO ET Littoral	Indirect evidence	Bruz, FranceHQ checked Sep 17, 2026	11-50	13 contacts →
	Indirect evidence “IDRA BIO ET LITTORAL is an oceanography services company based out of LA HAYE DE PAN, BRUZ, France.” Source: RevenueBase Database · checked Sep 17, 2026
21	DV Offshore	Indirect evidence	Saint-cloud, FranceHQ checked Sep 17, 2026	1-10	13 contacts →
	Indirect evidence “DV Offshore’s expertise includes floating systems, terminals, mooring systems, floating wind turbines, subsea production, pipelines & risers, allowing us to provide technical and…” Source: RevenueBase Database · checked Sep 17, 2026
22	Actimar	Indirect evidence	Brest, FranceHQ checked Sep 17, 2026	11-50	12 contacts →
	Indirect evidence “Depuis plus de 20 ans, Actimar apporte son expertise au service de la mer.” Source: RevenueBase Database · checked Sep 17, 2026
23	D2m Services	Indirect evidence	Paris, FranceHQ checked Sep 17, 2026	11-50	12 contacts →
	Indirect evidence “Welcome to d2m Services!” Source: RevenueBase Database · checked Sep 17, 2026
24	Kappa Offshore Solutions	Partial evidence	St-Nazaire, FranceHQ checked Sep 17, 2026	1-10	12 contacts →
	Partial evidence “Kappa Offshore Solutions is a marine engineering company specialized in offshore seismic data acquisition.” Source: RevenueBase Database · checked Sep 17, 2026
25	Acri-In	Partial evidence	Biot, FranceHQ checked Sep 17, 2026	11-50	11 contacts →
	Partial evidence “The company specializes in maritime, river and coastal engineering.” Source: RevenueBase Database · checked Sep 17, 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: marine energy 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 marine energy consultants.
Partial evidence: Its own public description names part of marine energy consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name marine energy 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 158 marine energy consultants based in France

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Marine energy consultants based in France at a glance

As of Sep 17, 2026

37.3%Verified-email coverage

14.0Average contacts per company

1-10Median size (employees)

8.2%Largest-city concentration · Paris

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

108

11-50

51-200

201-500

501-1,000

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 158 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 marine energy 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 “marine energy 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 marine energy 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 marine energy 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, 822 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 17, 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 marine energy 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 marine energy consultants are there based in France?

RevenueBase identified 158 marine energy 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?

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

Which city has the most marine energy consultants?

Paris leads with 13 headquartered companies, followed by Nantes (8) and Bordeaux (7).

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 822 verified decision-maker contacts tracked across these 158 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 17, 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.