Company lists · Data refreshed September 2026

Top 25 Power plant construction contractors based in France

Name: Power plant construction contractors based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 78 companies tracked

RevenueBase identified 78 power plant construction contractors headquartered in France as of September 2026 and tracks 10,173 professional contacts across them, including 4,218 with verified work emails. Paris is the largest hub.

This list covers power plant construction contractors 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

78Companies

10,173Contacts tracked

4,218Verified emails

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The 25 largest power plant construction contractors based in France

Ranked by team size

Top 25 of 78 power plant construction contractors 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 power plant construction contractors: 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	Assystem	Indirect evidence	Courbevoie, FranceHQ checked Sep 17, 2026	5,001-10,000	6,518 contacts →
	Indirect evidence “Assystem, one of the world's leading independent nuclear engineering companies, is committed to accelerating the energy transition.” Source: RevenueBase Database · checked Sep 17, 2026
2	AKUO	Indirect evidence	Paris, FranceHQ checked Sep 17, 2026	201-500	525 contacts →
	Indirect evidence “Akuo est spécialisé dans la mise en œuvre d’unités de production d’électricité à partir de ressources renouvelables, en particulier le solaire, l'éolien et le stockage.” Source: RevenueBase Database · checked Sep 17, 2026
3	Dalkia EN	Indirect evidence	Courbevoie, FranceHQ checked Sep 17, 2026	501-1,000	485 contacts →
	Indirect evidence “Sur les centrales nucléaires du groupe EDF, nous intervenons sur tous les types de bâtiments, à la fois de production et tertiaires.” Source: RevenueBase Database · checked Sep 17, 2026
4	Atlantic Ingénierie	Indirect evidence	Saint-herblain, FranceHQ checked Sep 17, 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 17, 2026
5	Anotech	Indirect evidence	Paris, FranceHQ checked Sep 17, 2026	501-1,000	292 contacts →
	Indirect evidence “Anotech delivers complex energy projects by integrating project governance, controls, engineering integrity, and execution into a single, accountable delivery model across the…” Source: RevenueBase Database · checked Sep 17, 2026
6	Entrepose Group	Strong evidence	Colombes, FranceHQ checked Sep 17, 2026	1,001-5,000	240 contacts →
	Strong evidence “SPECIALISED ACTIVITIES & EPC CONTRACTOR FOR THE ENERGY INDUSTRY International Contractor for design, construction and operating of production, transport and storage…” Source: RevenueBase Database · checked Sep 17, 2026
7	Etchart Energies	Indirect evidence	Anglet, FranceHQ checked Sep 17, 2026	51-200	87 contacts →
	Indirect evidence “Etchart Energies, anciennement Arrambide, est une filiale du groupe Etchart depuis plus de 10 ans maintenant.” Source: RevenueBase Database · checked Sep 17, 2026
8	Africa Power Services	Indirect evidence	Bordeaux, FranceHQ checked Sep 17, 2026	11-50	74 contacts →
	Indirect evidence “Energy is essential to the success of every project.” Source: RevenueBase Database · checked Sep 17, 2026
9	Arnest	Indirect evidence	Puteaux, FranceHQ checked Sep 17, 2026	51-200	72 contacts →
	Indirect evidence “Organisée sur un modèle de start-up, Arnest réalise des services d’ingénierie et de management de projets pour le secteur de l'énergie.” Source: RevenueBase Database · checked Sep 17, 2026
10	Dietsmann France	Indirect evidence	Toulouse, FranceHQ checked Sep 17, 2026	5,001-10,000	61 contacts →
	Indirect evidence “Le plus grand spécialiste indépendant en Opération et Maintenance de centrales de production d'énergie.” Source: RevenueBase Database · checked Sep 17, 2026
11	Bouygues Construction Purchasing	Partial evidence	Guyancourt, FranceHQ checked Sep 17, 2026	201-500	55 contacts →
	Partial evidence “BOUYGUES CONSTRUCTION PURCHASING is a company based out of 1 AV EUGENE FREYSSINET, Guyancourt, France.” Source: RevenueBase Database · checked Sep 17, 2026
12	Coretec SA	Indirect evidence	Decines-charpieu, FranceHQ checked Sep 17, 2026	51-200	48 contacts →
	Indirect evidence “Spécialiste énergie et utilités pour l'industrie - Chaleur procédés : vapeur, eau surchauffée, fluide thermique- Refroidissement et autres utilités : eau glacée, glycolée, eau de…” Source: RevenueBase Database · checked Sep 17, 2026
13	ELYS	Partial evidence	Nimes, FranceHQ checked Sep 17, 2026	11-50	44 contacts →
	Partial evidence “ELYS, ingénierie indépendante pour la construction de parcs éoliens, de centrales solaires PV, BESS et de postes HTB privés.” Source: RevenueBase Database · checked Sep 17, 2026
14	Acteam ENR	Partial evidence	Toulouse, FranceHQ checked Sep 17, 2026	11-50	43 contacts →
	Partial evidence “Société d'Ingénierie, Conseil et Construction, ACTEAM ENR accompagne - Industriels, Promoteurs, Collectivités et Agriculteurs dans la mise en œuvre de projet solaire- Maitre…” Source: RevenueBase Database · checked Sep 17, 2026
15	DE Viris	Indirect evidence	Aix-en-provence, FranceHQ checked Sep 17, 2026	51-200	31 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
16	Exoceth	Indirect evidence	Guer, FranceHQ checked Sep 17, 2026	11-50	25 contacts →
	Indirect evidence “EXOCETH WATER & ENERGY SYSTEMS is an engineering office associated to a technical assistance service dedicated to water and energy applications.” Source: RevenueBase Database · checked Sep 17, 2026
17	Imes Group	Indirect evidence	Ennery, FranceHQ checked Sep 17, 2026	11-50	24 contacts →
	Indirect evidence “IMES delivers services across the entire lifecycle of electricity infrastructure projects, from preliminary design, tendering to commissioning.” Source: RevenueBase Database · checked Sep 17, 2026
18	Deftline	Indirect evidence	Cherbourg, FranceHQ checked Sep 17, 2026	51-200	21 contacts →
	Indirect evidence “DEFTLINE est un groupe d’ingénierie, de conseil et de services.” Source: RevenueBase Database · checked Sep 17, 2026
19	Rosaz Energies	Indirect evidence	Saint-pierre-d'albigny, FranceHQ checked Sep 17, 2026	11-50	19 contacts →
	Indirect evidence “ROSAZ ÉLECTRICITÉ, créée en 1971, est implantée sur le marché de l’équipement électrique principalement en milieu tertiaire et industriel.(Courants forts et courants faibles).” Source: RevenueBase Database · checked Sep 17, 2026
20	Groupe Angel Larren	Indirect evidence	Decazeville, FranceHQ checked Sep 17, 2026	51-200	15 contacts →
	Indirect evidence “Le Groupe ANGEL LARREN à travers la complémentarité de ses filiales ELIT et SLR, met à votre disposition ses 50 années d’expériences dans les métiers de l’énergie.” Source: RevenueBase Database · checked Sep 17, 2026
21	Optimproject	Partial evidence	Le Crès, FranceHQ checked Sep 17, 2026	11-50	12 contacts →
	Partial evidence “Spécialistes dans la réalisation de gros projets d'énergies renouvelables depuis plus de 15 ans, nous accompagnons la construction de vos ouvrages dans toutes leurs phases de…” Source: RevenueBase Database · checked Sep 17, 2026
22	Er3i	Indirect evidence	Laxou, FranceHQ checked Sep 17, 2026	11-50	11 contacts →
	Indirect evidence “ER3i est une société spécialisée dans la conception, la fabrication, l’installation, la mise en service d’équipements électriques, mécaniques, d’automatismes et de systèmes…” Source: RevenueBase Database · checked Sep 17, 2026
23	Energitec	Indirect evidence	Toulon, FranceHQ checked Sep 17, 2026	11-50	8 contacts →
	Indirect evidence “Depuis 15 ans, Energitec est spécialisé dans le conseil, l’ingénierie et l’installation d’équipements électriques pour les entreprises et les collectivités.” Source: RevenueBase Database · checked Sep 17, 2026
24	Inthersanit	Partial evidence	La Motte Servolex, FranceHQ checked Sep 17, 2026	11-50	8 contacts →
	Partial evidence “INTHERSANIT is a construction company based out of 273 RUE DENIS PAPIN, LA MOTTE SERVOLEX, France.” Source: RevenueBase Database · checked Sep 17, 2026
25	Tewa Solar	Indirect evidence	FranceHQ checked Sep 17, 2026	1-10	4 contacts →
	Indirect evidence “TEWA Solar is an Engineering company providing services on solar photovoltaïc projects.” 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: power plant construction contractors. 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 power plant construction contractors.
Partial evidence: Its own public description names part of power plant construction contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name power plant construction contractors. 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 78 power plant construction contractors based in France

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Power plant construction contractors based in France at a glance

As of Sep 17, 2026

41.5%Verified-email coverage

130.4Average contacts per company

11-50Median size (employees)

9.0%Largest-city concentration · Paris

Sep 17, 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

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 78 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 power plant construction contractors, 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 “power plant construction contractors”. 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 power plant construction contractors), 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 power plant construction contractors, 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, 4,218 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 power plant construction contractors, 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 power plant construction contractors are there based in France?

RevenueBase identified 78 power plant construction contractors 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?

Assystem, headquartered in Courbevoie, tops this list with the largest team on record.

Which city has the most power plant construction contractors?

Paris leads with 7 headquartered companies, followed by Courbevoie (3) and Decines-Charpieu (2).

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 4,218 verified decision-maker contacts tracked across these 78 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.