Company lists · Data refreshed September 2026

Top 25 Nuclear site remediation companies based in France

Name: Nuclear site remediation companies based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 98 companies tracked

RevenueBase identified 98 nuclear site remediation companies headquartered in France as of September 2026 and tracks 9,332 professional contacts across them, including 3,343 with verified work emails. Lyon is the largest hub.

This list covers nuclear site remediation companies 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

98Companies

9,332Contacts tracked

3,343Verified emails

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The 25 largest nuclear site remediation companies based in France

Ranked by team size

Top 25 of 98 nuclear site remediation companies 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 nuclear site remediation 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	Orano DS	Indirect evidence	Massy, FranceHQ checked Sep 20, 2026	5,001-10,000	1,684 contacts →
	Indirect evidence “Orano DS fait partie du Groupe Orano, le fournisseur de référence du cycle du combustible nucléaire.” Source: RevenueBase Database · checked Sep 20, 2026
2	Onet Technologies	Partial evidence	Marseille, FranceHQ checked Sep 20, 2026	1,001-5,000	1,664 contacts →
	Partial evidence “Onet Technologies has 40 years of experience in the nuclear industry, with a strong expertise in engineering and services for reactor maintenance; dismantling, decommissioning and…” Source: RevenueBase Database · checked Sep 20, 2026
3	NUVIA	Partial evidence	Rueil Malmaison, FranceHQ checked Sep 20, 2026	1,001-5,000	1,537 contacts →
	Partial evidence “Subsidiary of the world-leading VINCI group, NUVIA is an international company that has been operating on highly regulated and sensitive industrial sites for over 60 years.” Source: RevenueBase Database · checked Sep 20, 2026
4	Spie Nucléaire	Indirect evidence	Cergy-pontoise Cedex, FranceHQ checked Sep 20, 2026	1,001-5,000	1,079 contacts →
	Indirect evidence “À propos de SPIE Nucléaire Filiale de SPIE France, SPIE Nucléaire est le partenaire de référence multi-technique dans la conception, la réalisation, les travaux de modification…” Source: RevenueBase Database · checked Sep 20, 2026
5	Cyclife	Partial evidence	Paris La Défense Cedex, FranceHQ checked Sep 20, 2026	1,001-5,000	440 contacts →
	Partial evidence “As a European pioneer, Cyclife group offers integrated servicing in nuclear decommissioning and dismantling radioactive waste management.” Source: RevenueBase Database · checked Sep 20, 2026
6	Valgo Groupe	Partial evidence	Paris, FranceHQ checked Sep 20, 2026	501-1,000	279 contacts →
	Partial evidence “VALGO - Régénérer, Rénover, Revaloriser Entreprise internationale spécialisée dans la réhabilitation des sites pollués, VALGO transforme les sols, bâtiments et infrastructures…” Source: RevenueBase Database · checked Sep 20, 2026
7	Serpol	Indirect evidence	Vénissieux, FranceHQ checked Sep 20, 2026	201-500	180 contacts →
	Indirect evidence “Depuis 1983, SERPOL est une entreprise engagée au service de l’environnement et de ses clients.” Source: RevenueBase Database · checked Sep 20, 2026
8	GSF Energia	Indirect evidence	Saint-paul-trois-châteaux, FranceHQ checked Sep 20, 2026	51-200	89 contacts →
	Indirect evidence “GSF Energia est une filiale du groupe GSF l’un des leaders de la propreté et des services associés.” Source: RevenueBase Database · checked Sep 20, 2026
9	Envisol	Partial evidence	La Tour Du Pin, FranceHQ checked Sep 20, 2026	51-200	70 contacts →
	Partial evidence “ENVISOL est une entreprise spécialisée dans le conseil et l’ingénierie offrant des prestations dans le domaine des sites et sols pollués.” Source: RevenueBase Database · checked Sep 20, 2026
10	Graphitech Nuclear	Partial evidence	Lyon, FranceHQ checked Sep 20, 2026	11-50	60 contacts →
	Partial evidence “Graphitech is an engineering company in charge of technological development and engineering studies required in preparation for decommissioning nuclear reactors that use graphite…” Source: RevenueBase Database · checked Sep 20, 2026
11	Curium	Indirect evidence	Montagny, FranceHQ checked Sep 20, 2026	11-50	51 contacts →
	Indirect evidence “Since 1994, CURIUM has been dedicated to the management of environmental risks and of hazardous substances, from technical studies to in situ works.” Source: RevenueBase Database · checked Sep 20, 2026
12	Remea France	Partial evidence	Nanterre, FranceHQ checked Sep 20, 2026	11-50	46 contacts →
	Partial evidence “Depuis plus de 20 ans, Remea agit en faveur de l'environnement et pour ses clients en redonnant un avenir aux sites pollués.” Source: RevenueBase Database · checked Sep 20, 2026
13	Groupe MP	Partial evidence	Gemenos, FranceHQ checked Sep 20, 2026	201-500	46 contacts →
	Partial evidence “Groupe MP : solutions globales et expertes de décontamination de sites et de bâtiments.” Source: RevenueBase Database · checked Sep 20, 2026
14	SEREA	Partial evidence	Treillières, FranceHQ checked Sep 20, 2026	11-50	41 contacts →
	Partial evidence “SEREA est une PME indépendante spécialisée en gestion et réhabilitation des sites et sols pollués.” Source: RevenueBase Database · checked Sep 20, 2026
15	SET Environnement	Indirect evidence	Wissous, FranceHQ checked Sep 20, 2026	51-200	36 contacts →
	Indirect evidence “SET Environnement, filiale du groupe Ixio, leader de la dépollution complexe depuis 1986, met son expertise au service de la protection du public et de ses salariés.” Source: RevenueBase Database · checked Sep 20, 2026
16	NJE	Indirect evidence	Cleppe, FranceHQ checked Sep 20, 2026	51-200	33 contacts →
	Indirect evidence “PEINTURE, METALLISATION, REVÊTEMENTS TECHNIQUES DÉSAMIANTAGE ET DECONTAMINATION EN MILIEU INDUSTRIEL ET NUCLÉAIRE ECHAFAUDAGE, CONFINEMENT CALORIFUGE NJE est une entreprise…” Source: RevenueBase Database · checked Sep 20, 2026
17	Sedibex	Indirect evidence	Sandouville, FranceHQ checked Sep 20, 2026	51-200	29 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
18	SAT France	Indirect evidence	Yutz, FranceHQ checked Sep 20, 2026	51-200	24 contacts →
	Indirect evidence “LA SOCIETE SAT est un des leaders dans le domaine du désamiantage et des travaux spéciaux, de la décontamination à la déconstruction en milieu hostile.” Source: RevenueBase Database · checked Sep 20, 2026
19	Nucadvisor	Partial evidence	Puteaux, FranceHQ checked Sep 20, 2026	11-50	22 contacts →
	Partial evidence “NucAdvisor is a nuclear consulting company established in France by a group of senior executives and high-level experts from across the European nuclear industry.” Source: RevenueBase Database · checked Sep 20, 2026
20	Aergon	Partial evidence	Issy-les-moulineaux, FranceHQ checked Sep 20, 2026	11-50	18 contacts →
	Partial evidence “Aergon is an engineering company that provides a range of nuclear industry services, in the following fields - Safety of nuclear facilities and environmental impact - Safety for…” Source: RevenueBase Database · checked Sep 20, 2026
21	Sodeka	Indirect evidence	Amiens, FranceHQ checked Sep 20, 2026	11-50	17 contacts →
	Indirect evidence “Sodeka, votre Partenaire de Référence pour vos projets depuis 1996!” Source: RevenueBase Database · checked Sep 20, 2026
22	Sica Nucléaire	Indirect evidence	Meyreuil, FranceHQ checked Sep 20, 2026	11-50	15 contacts →
	Indirect evidence “SICA Nucléaire est une société d'inspection, de conseil, d'audit et de formation dans le secteur de l'énergie nucléaire.” Source: RevenueBase Database · checked Sep 20, 2026
23	Sobaten	Indirect evidence	Ivry Sur Seine, FranceHQ checked Sep 20, 2026	11-50	14 contacts →
	Indirect evidence “Créée en 1992, Sobaten est une société experte de la dépollution, filiale du groupe Ixio, à l'origine de nombreux travaux de recherche sur la protection des salariés et de…” Source: RevenueBase Database · checked Sep 20, 2026
24	ENDEP	Partial evidence	Villejust, FranceHQ checked Sep 20, 2026	11-50	12 contacts →
	Partial evidence “ENDEP est un bureau d’études spécialisé dans le domaine des sites et sols pollués (études et travaux) intervenant sur tout le territoire français.” Source: RevenueBase Database · checked Sep 20, 2026
25	Cleanuc	Indirect evidence	Courtabœuf, FranceHQ checked Sep 20, 2026	1-10	10 contacts →
	Indirect evidence “Créée en 2012, CleanuC SAS est une TPE d’ingénierie spécialisée dans le domaine du nucléaire.” 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: nuclear site remediation 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 nuclear site remediation companies.
Partial evidence: Its own public description names part of nuclear site remediation companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name nuclear site remediation 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 98 nuclear site remediation companies based in France

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Nuclear site remediation companies based in France at a glance

As of Sep 20, 2026

35.8%Verified-email coverage

95.2Average contacts per company

11-50Median size (employees)

5.1%Largest-city concentration · Lyon

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 98 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 nuclear site remediation 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 France whose own description of what they do matches “nuclear site remediation 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 nuclear site remediation 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 nuclear site remediation companies, 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, 3,343 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.

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 nuclear site remediation 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 nuclear site remediation companies are there based in France?

RevenueBase identified 98 nuclear site remediation companies 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?

Orano DS, headquartered in Massy, tops this list with the largest team on record.

Which city has the most nuclear site remediation companies?

Lyon leads with 5 headquartered companies, followed by Paris (3) and Pierrelatte (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 3,343 verified decision-maker contacts tracked across these 98 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.